Diaphragm Pressure Compensated Flow Control

CAD Model


Description: The PCFCD-1N1 is designed to maintain a constant flow rate, which the customer can adjust, regardless of upstream or downstream pressure variations. It works with both liquids (incompressible fluids) and gases (compressible fluids) but is primarily intended for the control of liquids. The pressure regulation is accomplished with a low friction diaphragm mechanism.


Max Inlet Pressure Rating: The PCFCD is rated for a maximum inlet pressure of 135 psig at 70F.  Please contact us if you require a higher pressure rating.

Pressure Differential Setting: Factory preset to maintain a 10 psi differential across the adjustable orifice.

Effective Orifice: 0” to 0.032” with standard and high resolution needle.

Wetted Materials: Brass or 316 Stainless Steel body. 302, 303 and 316 Stainless Steel internal components. Polyurethane tubing.

Flow Control Range:

  • Especially well suited for control of low flow rates.
  • 0 to 4.2 gallons per hour (0 to 19 liters per hour) of water.
  • 0-20 ft3/hr (0-0.56 cubic meters per hour) of air.
  • High flow needles available. Consult factory for details.

Approximate Weight: 45g in Brass and Stainless Steel. Weight will vary slightly depending on configuration.

Porting: 10-32 internal threaded inlet and outlet ports.