Model 2851 constant flow regulator has an AISI 316 stainless steel body and a two-piece construction for easy maintenance. It is a sturdy, industrial constant flow regulator and is designed to provide constant flow of liquids or gases regardless of pressure variations.

It is intended for low liquid flows in applications where supply or backpressure varies and for gas flows in applications where backpressure varies.

The regulator is a membrane type differential pressure controller, which is usually supplied with Model L variable area flow meter. Typical applications are control of seal waters, control of flush waters, water purging and air purging.

Technical Data
Body AISI 316
Spring AISI 316
Membrane EPDM
Membrane plate AISI 316
Seals Nitrile (*Viton®)
Connections NPT 1/4” (G 1/4”)
Maximum flow, water 0.8 USGPM
Maximum flow, air 240 SCFH air at 87 psig
Maximum differential pressure 290 psi
Maximum static pressure 290 psi (*435 psi at 85°F)
Pressure drop at nominal flow 29 psi 
Maximum temperature 165°F with acrylic flow tube (176°F with Grilamid)
Installation position Vertical
Weight 2 lbs
* Special construction on request

Product key