BP-8LF Series
Back Pressure Control Regulators

GO Regulator BP-8LF Series Back Pressure Regulators

The BP-8LF Series back pressure regulator is designed to furnish high precision control of pressures in analytical instrumentation. With the combination of the large diaphragm sensing area of the BP-8 Series and the low flow of the BP-3 Series pressure control as low as 20 inches of water is easily obtainable.

  • Gas or liquid service
  • 316L stainless steel construction
  • Electropolished body with better than 25 Ra finish in diaphragm cavity
  • Bubble tight shutoff
  • Adjustable control 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 & Control Pressures

Seat Material Maximum Temperature*   Maximum Control Range
Viton® 250° F (121° C) @ 500 psig (5.16 MPa)
Kalrez 300° F (148° C) @ 500 psig (5.16 MPa)
CF PTFE 300° F (148° C) @ 500 psig (5.16 MPa)
High Density PTFE 200° F (93° C) @ 500 psig (5.16 MPa)
Polyimide 500° F (260° C) @ 500 psig (5.16 MPa)

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



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