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Flow
switches for all applications
PVL
now has the United Kingdom's largest range of flow switches,
manufactured by Honsberg of Germany and Kelco of Australia.
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PADDLE
TYPE WITH REED SWITCH
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Reed
switch rated at 250Vac/50VA
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Sizes
from 3/8" to 2" BSP
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3
to 62 l/min adjustment ranges
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Brass,
stainless steel or plastic bodies
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Up
to 25 bar system pressure
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Temperatures
up to 110°C
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PADDLE
TYPE WITH MICROSWITCH
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Microswitch
rated at 250Vac/5A
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Sizes
from 3/8" to 2" BSP
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3.5
to 76l/min adjustment ranges
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Brass,
stainless steel or plastic bodies
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Up
to 25 bar system pressure
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Temperatures
up to 110°C
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DIY
FLOW SWITCH FOR DOMESTIC SHOWERS ETC
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Models
for 15mm and 22mm copper pipe
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3
to 6 l/min adjustment range (both
models)
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Supplied
complete with compression fittings
& 1m cable
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C/O
microswitch rated at 250Vac 16aA (res)
4A (ind)
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For
water applications up to a maximum
temperature of 85°C
- WRAS
approved
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PADDLE
TYPE WITH 4 x PADDLES
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4
x paddles supplied with each switch
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Suitable
for pipe sizes from 25mm to 200mm (1"
to 8")
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1"BSP
threaded pipe fitting
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All
stainless steel option
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Easily
adjusted by screw under sliding cover
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Standard
(IP65) Din plug
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C/O
microswitch rated 250Vac/5A
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FOR
PIPES UP TO 6" DIAMETER (150 DN)
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Suitable
for pipe sizes from 1" to 6"
diameter.
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Standard
1" BSP fitting
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0.19
to 39.90 m³/h (H²O) adjustment
ranges
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4
x paddle sizes supplied with each switch
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Brass
or stainless steel body
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Protected
to IP65
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FOR
PIPES UP TO 7.5" DIAMETER (200 DN)
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Suitable
for pipe sizes from 1" to 7.5""
diameter.
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Standard
1" BSP fitting
- 0.2
to 90.80 m³/h (H²O) adjustment
ranges
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4
x paddle sizes supplied with each switch
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Brass
or stainless steel body
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Protected
to IP65
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CORROSION
RESISTANT HEAVY DUTY FLOW SWITCH
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All
polypropylene construction with s/steel
thread option.
- Suitable
for acids, chemicals & seawater
- Standard
1" BSPT thread
- 15A
or 20A 500V SPDT switch
- Suits
pipe sizes 25mm and above
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18
or 100 bar pressure rating
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Protected
to IP65
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Fully
adjustable with manual override.
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HEAVY
DUTY FLOW SWITCH WITH 100 BAR RATING!
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ALL
PLASTIC FLOW SWITCH WITH TIME DELAY
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CORROSION
RESISTANT PUMP CONTROLLER
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Integrated
flow and pressure control
- Built-in
timer
and run-on timer
- Directly
controls pumps up to 3.75kW 5HPs
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Suitable
for acids, chemicals & seawater
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Dry
running protection for pumping systems
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Microprocessor
digital control
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UNIQUE
TRAILING WIRE FLOW SWITCH !
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TRAILING
WIRE FLOW SWITCH WITH MANUAL OVERRIDE!
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Unique,
stainless steel trailing cable sensor
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Standard
1" BSPT fitting
- Corrosion
resistant body
- Manual
override for testing
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Powerful
15Amp 500Volt SPDT switch
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Suitable
for data logging of effluent flow
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Protected
to IP67
- 18
bar pressure rating
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TRAILING
WIRE FLOW SWITCH - UP TO 100 BAR PRESSURE
!
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Unique,
stainless steel trailing cable sensor
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Standard
1" BSPT fitting
- Corrosion
resistant body
- Manual
override for testing
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Powerful
15Amp 500Volt SPDT switch
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Suitable
for data logging of effluent flow
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Protected
to IP67
- 100
bar pressure rating
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CHEMICAL
RESISTANT MICRO FLOW SWITCH
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Detects
flows of less than 5ml/min
- Handles
flows up to 4l/min
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All
wetted parts are UPVC with Viton®
O-ring seals
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Suitable
for plastic tubing with 6, 8 & 12mm
adaptors
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Suitable
for acids, chemicals & seawater
& gases
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Maximum
pressure 108 bar
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PVDF
model also available
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CORROSION
RESISTANT IN LINE FLOW SWITCH
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Suits
tubes and pipes 6 to 20mm (1/4 to 3/4")
diameter
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No
metal parts are in contact with the
liquids
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Suitable
for acids, chemicals & seawater
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Choice
of three switching flow rates
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18
bar pressure rating
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Reed
switch or solid state switching options
- Liquids,
gases, water treatment or chemical dosing
uses
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CORROSION
RESISTANT HEAVY DUTY IN LINE FLOW SWITCH
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No
metal parts are in contact with the
liquids
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Suitable
for acids, chemicals & seawater
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Suits
tubes and pipes 15 to 25mm (1/2"
to 1") diameter
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100l/min
flow rating
- Detects
very low flows
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Directly
switches pump motors up to 1.5kW 2HP
- Versatile
all position mounting
- Manual
override built in
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PLASTIC
BODY WITH INTEGRAL FILTER
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Hostaform
body
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1/2"
BSP male threads
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Switch-point
ranges 0.4 - 12l/min (adjusted at factory)
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Integral
built-in filter
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Maximum
pressure 10 bar at 20degC
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N/O
reed switch rated 250Vac/10VA max
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PISTON
TYPE WITH PLASTIC BODY
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- All
plastic (POM)construction (see brass model
below)
- Ideal
for water, oil or air
- 1/4";
3/8; 1/2; 3/4 & 1" BSP female
threads
- Maximum
pressure 10bar
- Adjustable
setting range 1 - 11l/min
- N/O
reed switch rated 250Vac/50VA max
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Top
of page
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FLOW
SWITCH WITH FLOW INDICATOR
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1/4"
to 1" BSP sizes
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Visible
flow scale in l/min (water)
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Up
to 50 bar pressure
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Ideal
for use with dirty/dark liquids
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May
be mounted in any position with 360
deg visibility
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Adjustable
switch head with reed-switch
- Model
NOK illustrated with optional switch-head
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FW1
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FLOW
SWITCH WITH BRASS BODY
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Brass
body
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Ideal
for water, oil or air
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1/4";
3/8; 1/2; 3/4 & 1" BSP female
threads
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Maximum
pressure 100bar
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Adjustable
setting range 1 - 11l/min
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N/O
reed switch rated 250Vac/50VA ma
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PISTON
TYPE FOR LOW FLOW RATES
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N/O
reed switch rated at 220V/100VA
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1/4"
BSP standard thread
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5
ml/min to 3 l/min switch adjustment
ranges
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Brass
or stainless steel body
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300
bar maximum system pressure
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Horizontal
or vertical mounting
- See
more flow switches for low
flow rates.
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PISTON
TYPE - IDEAL FOR HYDRAULICS
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C/O
reed switch rated at 250V/50VA
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Sizes
from 1/4" to 1" BSP
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0.4
l/min to 60 l/min adjustment ranges
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Brass
or stainless steel body
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200
bar maximum system pressure
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1;
2 ; 3 or 4 independant switch head option
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PISTON
TYPE - IDEAL FOR HYDRAULICS
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C/O
reed switch rated at 250V/50VA
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Sizes
from 1/4" to 1" BSP
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0.4
ml/min to 60 l/min adjustment ranges
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Brass
or stainless steel body
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200
bar maximum system pressure
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Horizontal
or vertical mounting
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2.5
meters of PVC cable
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NEW
VISCOSITY COMPENSATED FLOW SWITCH
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- Wider
settings eg 1.5 to 15 l/min
- Wider
indication range
- Very
effective viscosity compensation 30
- 300mm²/s
- New optional displays available
- see our What's
New page
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PISTON
FLOW SWITCH
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The
Model HD1KV is a piston operated flow
switch with magnetic triggering of an
adjustable reed-switch contact. The HD1KV
has built-in viscosity compensation covering
the range of 1 - 200 mm²/s.
The modular design also allows the fitment
of an Omni Transducer with 2 x switchpoints
and a standard 4 - 20mA output.
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OMNI
FLOWMETER
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The
Model Omni-HD1K Flowmeter has a similar
specification as the Model HD1KV above but
is fitted with a user-programmable display
with the following features:-
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PISTON
FLOW SWITCH
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The
Model HR1MV is a piston operated flow
switch with magnetic triggering of an
adjustable reed-switch contact. The HR1MV
has built-in viscosity compensation covering
the range of 1 - 200 mm²/s.
The modular design also allows the fitment
of an Omni Transducer with 2 x switchpoints
and a standard 4 - 20mA output.
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PISTON
TYPE WITH OPTIONAL METER
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C/O
reed switch rated at 220V/50VA
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Horizontal
or vertical meter option
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Rack
& pinion switch setting
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Brass
or stainless steel body
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200
or 500 bar system pressure options
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Sizes
from 1/4" to 3" BSP
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OUR
SMALLEST 'PISTON' FLOW SWITCH!
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Only
30mm x 15mm
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M5
threaded ports - brass bodyr
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Adjustment
range 1 - 100l/min Air (1bar, 20°C)
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N/O
reed switch rated at 125Vac/0.5A (10VA)
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For
gaseous media only
- More
switches for low flow rates
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Top
of page
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MF-007
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NEXT
SMALLEST 'PISTON' FLOW SWITCH!
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Only
63mm x 20mm
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M10x1
threaded ports - brass body
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Range:
0.05 to 1.0 l/min H²/O
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Adjustable
switch housing
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N/O
reed switch rated at 120 Vac/0.5A, 10
VA
- See
more switches for low flow rates
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PADDLE
TYPE - BRAZE IN or SCREW IN
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We
supply low-cost flow switches suitable
for OEM high volume applications.
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Braze
or screw-in using adapters supplied
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Suitable
for pipes up to 80mm dia
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Please
call us to discuss your requirements
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UR1-G
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PADDLE
TYPE - BRAZE IN or SCREW IN
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- 3/8"
to 2" BSP thread sizes
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Brass
or stainless steel body
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Maximum
liquid temperature - 110°C
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User
adjustable reed-switch
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Top
of page
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FLOW
SWITCH FOR VERY LOW FLOW RATES!
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Adjusted
to switch between 0.015 and 0.4 l/min
H2O
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Sizes
from 1/4" to 1/2" BSP
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Low
pressure loss design
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Bronze
body
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Reed
switch rated at 250Vac/1A 50VA
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Can
be used with liquids and gases
- More
switches for low flow rates
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INDUCTIVE
SIGNAL - NO MAGNETS!
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This
flow switch does not rely on any magnets
and is therefor ideal for flow switching
application where the liquid is contaminated
by ferrous (iron) particles - for example:-
Cooling water on grinding machines.
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Inductive
proximity switch: 10 - 30Vdc/200mA max
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Sizes
from 1/4" to 3" BSP
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Bronze
or stainless steel body options
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HIGH
PRESSURE UP TO 200 BAR
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Small,
simple flow switch for liquids up to
200 bar
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Bronze
body with 1/4", 3/8" or 1/2"
BSP ports
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Maximum
temperature 90degC
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C/O
microswitch rated 250Vac/6A
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Reed
switch (Model FF) rated at 250Vac 32VA
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ALL
PLASTIC - NO METAL WETTED PARTS
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PVC
body sizes suitable for 15mm to 80mm
PVC pipes
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Screwed
fitting (illustrated) flanges or solvent
weld options
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PTFE
coated stainless steel (1.430) spring
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PVC
piston and PVC encapsulated magnet
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Maximum
pressure & temperature = 10bar and
60degC
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Ranges
from 2 - 500 l/min
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C/O
reed switch rated at 250Vac/1.5A (50VA)
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HEAVY
DUTY WITH REED SWITCH
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C/O
reed switch rated at 250Vac/50VA
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Sizes
from 1/4" to 3" BSP
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Up
to 300mm DIN flange option
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1
to 600 l/min adjustment ranges
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Bronze
or stainless steel body
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Protected
to IP65
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HEAVY
DUTY WITH MICROSWITCH
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C/O
microswitch rated at 250Vac/50VA
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Sizes
from 1/4" to 3" BSP
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Up
to 300mm DIN flange option
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1
to 600 l/min adjustment ranges
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Bronze
or stainless steel body
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Protected
to IP65
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VD.FT
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FLOW
SWITCH WITH FLANGES
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Flange
sizes from DN15 to DN300
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Bronze;
Cast Iron or Stainless Steel body options
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Flow
rates from 2 - 1,600 l/min (water)
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Suitable
for liquids and gases
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Maximum
pressures up to 40 bar (stainless steel)
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C/O
reed switch rated at 250Vac 80VA max
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Optional
microswitch model VM.RF
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FLOW
SWITCH WITH FLOW INDICATOR
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Sizes
from 1/4" to 3" BSP
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2
- 600 l/min adjustment ranges (H°O)
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Maximum
temperature of 120degC
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Models
available for up to 100 bar maximum
pressure
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Switch
rated at 250Vac/50VA
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Bronze
body
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UP
TO 350°C FLOW SWITCH WITH INDICATOR
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Suitable
for use with temperatures up to 350degC
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Visual
flow indicator option
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Adjustable
switch-point
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Up
to 40 bar system pressure
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Standard
DIN flanges
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Cast
steel body
- More
switches for high temperatures here
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PISTON
TYPE FLOW SWITCH
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- The
flow switches type MX are employed for
the monitoring of liquids in temperature
ranges of 160°C.
- Piston
type actuation
- Linear
magnetically linked to an externally
arranged switch.
- Electrical
components are subjected to only 70°C
max.
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Liquid temperature of 160°C max
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PISTON
TYPE FLOW SWITCH UP TO 160°C
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- The
flow switches type MXR are employed
for the monitoring of liquids in temperature
ranges of 160°C.
- Piston
type actuation
- Linear
magnetically linked to an externally
arranged switch.
- Electrical
components are subjected to only 70°C
max.
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Liquid temperature of 160°C max.
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PADDLE
TYPE FLOW SWITCH
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- Instruments
operate with a spring-supported paddle
and magnetic triggering of an adjustable
micro switch.
- Low
pressure loss
- High
switch capability
- Exact
setting of switch via scale
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PADDLE
TYPE FLOW SWITCH WITH BELLOWS SEAL
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- Mechanical
flow switch for liquids or gaseous media.
- A
bellow-supported paddle activates an
adjustable micro-switch.
- Operational
range a diameter 25-200
- Visual
functions control by transparent cover
- Micro
switch with "combination contact"
gold coating for small currents and
silver coating for larger currents
- Low
pressure loss
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PADDLE
TYPE FLOW SWITCH WITH ATEX OPTION
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Flange
sizes from DN 40 to DN 200
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Suitable
for temperatures up to 90degC
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Change-over
microswitch
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Brass
or stainless steel body
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User
adjustable switch-point
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(Multiply
water flow-rates by 15 to obtain flow-rates
for air)
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FLOW
INDICATOR & SWITCH
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FLOW
INDICATOR WITH OPTIONAL SWITCH & LED
OPTION
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1/4",
3/8",1/2", 3/4" and 1"BSP
sizes
-
100
bar maximum pressure
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Viscosity
compensated option (Model NJV)
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Optional
switch-head with LED indicator
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Brass
or stainless steel body
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Manifold
option
for up to 8 x instruments
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FLOW
SWITCH WITH DIAL
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Suites
pipe sizes from 1/2" to 2"
BSP
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2
to 500 l/min flow ranges
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Slave
needle sets the switch-point
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Optional
red & green LED's indicate switch
status
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SPDT
microswitch rated at 220V/3A
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See
also Model
TZ with 4-20mA output +
switch
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Protected
to IP65
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FLAP
TYPE WITH SWITCH UP TO 8" DIA
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Sizes
from 1/2" to 8" BSP or ANSI
flange
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Up
to 500m³/h maximum flow.
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Metal,
PVL or PP body
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Up
to 200degC with cooling fins
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+/-
10% accuracy (full scale)
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EExd
11C T6 and pneumatic switch option
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FLOW
SENSOR WITH 2 x SWITCH-POINTS
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New
flow sensor operates on the calorimetric
principle
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4
- 20mA output with 2 x user adjustable
switch-points
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All
stainless steel with no moving parts
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Very
fast response times for air, oil or
water
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Clear
& easy to read back-lit LCD display
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Simple
to adjust with removable setting ring
- For
more information on the Omni System -
Click
here
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FLOW
SENSOR WITH INTEGRAL HEAD
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-
Stainless
steel probe - 1/4 or 1/2" BSP
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No
moving parts
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Ideal
for air, oil & water monitoring
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LED's
show flow trend
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Heavy
duty housing option
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Optional
integral temperature switch & swan-neck
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FLOW
SENSOR WITH SWAN-NECK
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Stainless
steel probe - 1/4 or 1/2" BSP
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No
moving parts
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6Ideal
for air, oil & water monitoring
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LED's
show flow trend
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Heavy
duty housing option
-
Optional
integral temperature switch
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EFKM
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TOUGH
S/STEEL HOUSING WITH 8mm GLASS
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This
stainless steel housing which had been
specifically designed to house the Smart
display heads for use in hostile conditions,
is now available for the Type EFK range
of flow sensors.
The picture shows the removable bezel
which retains the 8mm thick lens.
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1/4"
or 1/2"BSP S/STEEL FLOW SENSORS
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-
All
stainless steel (1.4571) wetted parts
-
1/4"
or 1/2"BSP thread
-
28mm
or 45mm sensor length
-
M12x1
connector plug & 2m cable supplied
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Suitable
for Oil, Air & Water
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Maximum
pressure 100 bar & 0 - 70degC temp
range
- Used
with EEFK & EEFKT Din rail control
units
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EFKS.L
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HYGIENIC
FITTING S/STEEL FLOW SENSOR
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- All
stainless steel (1.4571) wetted parts
- Hygienic
Tri-clover (Tri-clamp) fitting
- M12x1
connector plug & 2m cable supplied
- Ideal
for the food & pharmaceutical industries
- Maximum
pressure 100 bar
- Operating
temperature 0 - 70degC
- Used
with EEFK & EEFKT Din rail control
units
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EEFK/T
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CONTROL
UNIT FOR EFK1, EFKS & EFKS.L
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Models
available for 230Vac and 24Vdc
-
Standard
Din rail mounting
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9
x green LED's shows flow trend
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Red
LED indicates switch-point
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Relay
output plus PNP, NPN
-
Easy
adjustment for flow & optional temperature
switch
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PVL now has Britain's largest range of flow
switches, manufactured by Honsberg of Germany.
Honsberg is a long-established family-owned
company in Remscheid which designs and manufactures
the finest quality flow, pressure and level
switches, plus many other products, in one
of Europe's fastest growing businesses in
this market. PVL has been a UK distributor
for the full Honsberg range for many years
and works closely with the Honsberg design
team to meet customers' needs.
On
this page you can see Honsberg piston, paddle
and inductive-signal flow switches for just
about every application, including high-pressure
flow switches, flow switches for extremely
low flow rates, flow switches for ferrous-contaminated
water (for example, from water cooled grinding
machines), all-plastic switches with no
metal wetted parts, flanged flow switches,
high-temperature (to 350ºC) flow switches,
ATEX-approved flow switches for hazardous
areas, even a range of flow switches with
dials for fast and easy readout. Add to
all the flow switches ranges of Honsberg
flow indicators and flow transmitters and
you have everything you could need to monitor,
log and record flow accurately and reliably
in almost any circumstances.
If
you need Technical Advice, our Engineers
are waiting for your call on 01892 664499
or click here to
send a us your enquiry
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Need
help? Speak to an engineer - FREE
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This page has lots and lots of flow switches
and the choice is so vast that quite possibly
you will have difficulties in making the
best selection for your application - but
help is at hand...
We
have a team of experienced engineers
(Dave, Tony & Jamie) who are sitting
at their desks, twiddling their thumbs waiting
for the phone to ring. To stir them into
action, just click this button once,
their phones will ring and they will fall
over themselves to offer you the best
possible advice and prices!
Go
on..... try it now. Our advice is FREE
and you won't even have to pay for the
call*

if
you don't want to talk to one of our engineers...
DO
NOT PRESS THIS BUTTON
*This
offer applies to UK customers only.
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