Model 8311LP
Back Pressure Regulator
SKU#:
Model 8311LP
Description
The Model 8311HP and 8311LP are high capacity, self-contained back pressure/relief regulators with a double-seat design. These units are utilized to control inlet (upstream) pressure between 1 and 200 psig (.07-13.8 Barg). Available in two inlet pressure designs; LP - larger diaphragm design for relief pressures up to 39 psig (2.69 Barg), and HP - smaller diaphragm design for relief pressures up to 260 psig (17.93 Barg).
Inlet Design Pressure
- Up to 39 psig (2.69 Barg)
Outlet Pressure
- 1 psig (.07 Barg) to 30 psig (2.1 Barg)
Line Sizes
- 1-1/2" (DN40)
- 2" (DN50)
- 2-1/2" (DN65)
- 3" (DN80)
- 4" (DN100)
End Connections
- NPT
- FLANGED
- RAISED FACED
- FLAT FACED
- 14" FACE TO FACE
Material Combinations: Body / Diaphragm Case / Spring Chamber
- CI/CI
- CS/CS
CI = Cast Iron
CS = Cast Carbon Steel
Features
- High Capacity: The highest capacity back pressure regulators Cashco manufactures due to dual ports.
- High Stability: Outstanding operation resulting from balanced design which maximizes opposing plug forces, even at very low pressure drops. Diaphragm isolated from fluid velocity effects.
- Heavy Guiding: Plug is top and bottom guided with hardened stem guides.
- Broad Setpoint Range: 1-30 psig (.07 - 2.1 Barg)
- High Pressure Drop Capability: Up to 260 psig.
