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Paddlewheel Insertion Flowmeters
WFP Series
The WFP Series flowmeters are impeller-type insertion meters degined
for use in pipe sizes of 1/2” to 6”. High quality jewel bearings and
nickel-bound tungsten carbide shaft are used. Bodies are machined from
solid rod for maximum precision. Low flow performance is superior. The
rotation of the rotor is detected by a non-drag Hall-effect sensor. Output
is a pulse-type square wave, which can be sent up to 2000 feet (610
meters) without a transmitter.
The WFP require special fittings, since they are not depth-adjustable.
Installation in the fitting ensures correct depth placement in the pipe for
accurate readings. Each fitting is individually calibrated and marked with
the K-factor (pulses per gallon) produced during the factory flow test. Test fittings and flowmeters are available in
PVC.
WFP Series flowmeters are perfect for chemical proportioning applications, and readily interface with the WebMaster®
series controllers. They are especially cost effective for use in pipe sizes greater than 2”.

SPECIFICATIONS
Fitting Length
Size

Flow Range (gallons per minute)

Dimension A

1/2”

14 ½”

3/4”

18 ½”

1”

18 ½”

1½”

2”

3”

4”

6”

WFP200

WFP300

WFP400

WFP600

MIN

0.28

0.5

0.8

1.9

3.1

6.9

12

27

MAX

28

50

80

190

314

691

1200

2700

*

6”

1.5”
WFP150

*

4”

1”
WFP100

20”

3”

3/4”
WFP075

20”

2”

1/2”
WFP050

PART#

*

PVC Working Pressure vs. Temperature °F
60°

70°

80°

90°

100°

200

PSI

* Requires saddle
150

100

50
A
Temperature

110°

120°

130°