CYL-21 Series
Pressure Regulators

CYL-21 Series Cylinder Pressure Regulator

The CYL-21 Series is a compact cylinder regulator based on the time proven design of the PR-1 Series single stage stainless steel line regulator and is suitable for most corrosive gas cylinder applications.

The standard unit is equipped with integral inlet filters. It completes complete with a CGA fitting and 2" diameter gauges.

  • 316L stainless steel construction
  • Electropolished body with better than 25 Ra finish in diaphragm cavity
  • 20 micron inlet filter
  • Bubble tight shutoff
  • CGA inlet fitting
  • 2″ diameter 316 stainless steel gauges
  • Outlet pressure ranges are 10, 25, 50, 100, 250 and 500 psig
  • Proof pressure is 2 times maximum working pressure
  • Burst pressure is 4 times maximum working pressure
  • Weight: 1.9 lbs (0.86 kg)
  • Mounting style is surface or panel (see Outline and mounting dimensions)

Maximum Temperature & Operating Inlet Pressures

Stainless Steel
Seat Material Maximum Temperature* Maximum Operating Inlet Pressure
Tefzel® 150º F (66º C) @ 3600 psig (24.82 MPa)
High Density PTFE 150º F (66º C) @ 3600 psig (24.82 MPa)
CF PTFE 175º F (80º C) @ 3600 psig (24.82 MPa)
PCTFE 175º F (80º C) @ 6000 psig (41.37 MPa)
Polyimide 500º F (260º C) @ 3600 psig (24.82 MPa)
175º F (80º C) @ 6000 psig (41.37 MPa)
PEEK 500º F (260º C) @ 3600 psig (24.82 MPa)
175º F (80º C) @ 6000 psig (41.37 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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