PR-7LF Series

PR-7LF Series

The PR-7LF Series pressure reducing regulator is designed to furnish precise low outlet pressure control to analytical instrumentation. With the combination of the large diaphragm sensing area of the PR-7 Series regulator and the low flow seat assembly of the PR-1 Series pressure regulator, pressure control down to 10 inches of water is easily obtainable.

  • Gas or liquid service
  • 316L stainless steel or Brass (alloy 360) construction
  • PTFE/Viton® diaphragm
  • Electropolished body (316L) with better than 25 Ra finish in diaphragm cavity
  • 20 micron inlet filter
  • Bubble tight shutoff
  • Outlet pressure ranges are 6, 25, 50, 75, and 125 psig
  • Proof pressure is 2 times maximum working pressure
  • Burst pressure is 4 times maximum working pressure
  • Weight: 3.2 lbs (1.45 kg)
  • Mounting style is surface or panel (see Outline and mounting dimensions)

Maximum Temperature & Operating Inlet Pressures

Seat Material

Maximum Temperature*

Maximum Operating Inlet Pressure

PTFE 150º F (66º C) @ 3600 psig (24.82 MPa)
Tefzel® 150º F (66º C) @ 3600 psig (24.82 MPa)
PCTFE 175º F (80º C) @ 3600 psig (24.82 MPa)
Viton® 250º F (121º C) @ 300 psig (2.07 MPa)
Kalrez® 250º F (121º C) @ 300 psig (2.07 MPa)

* Temperatures in excess of 175º F (80º C) require the use of a metal knob or the Tamper Proof option



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