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Pressure Relief (Safety) Valves, Back Pressure Valves, & Calibration Cylinders to 4000 ml

ACCUDRAW® Graduated Calibration Cylinders

Glass, PVC & Polypropylene Calibration Cylinders developed for the accurate calibration of metering pumps.

  • translucent

  • chemical resistant

  • break resistant

  • threaded or socket

  • colored graduations and lettering

  • PVC sizes 100 – 20000 ml

TOP VALVE Back Pressure Valves


Back Pressure and Pressure Relief Valves Designed to enhance the accuracy and safety of metering pumps.

  • Long life diaphragm

  • Range of 0 – 150 PSIG

  • Built-in optional, air release & gauge port

  • 7 sizes (1/4″ – 2″ NPT)

  • Color coded handles indicate size at a glance

ACCU-PULSE Pulsation Dampeners

Developed to remove pulsating flows from positive displacement pumps.

  • increase system efficiency and pump life

  • decrease maintenance and costs

  • protect pipes, meters, valves and instrumentation from pulsation and vibration

  • reduce pressure fluctuations and diaphragm wear

PFS Injection Quills

Developed to allow chemical injection into the center stream of the flow.

  • 6 materials of construction, 2 standard sizes available 6″ or 8″

  • threaded or socket connections

  • built in spring loaded check valve

  • pressure range to 3000 PSIG, temperatures to 260ºC

PFS Corporation Stops

Designed to inject chemical into the center stream of the flow.

  • isolation valve allows for ease of maintenance

  • available in 6 materials of construction

  • connection in NPT, Metric or flanged


Designed to improve the performance and safe operation of most pumps used for metering applications.

  • CPVC and Viton corrosion resistant wetted materials of construction

  • specially designed float material that automatically vents built up gases on system start up and under working pressure

  • can be used on feed side or discharge side of pump (or both)