This manual provides installation, adjustment, maintenance, and parts ordering instructions for Fisher 627 Series pressure reducing regulators.
The Fisher 627 Series direct-operated pressure reducing regulators are designed for high and low pressure systems, suitable for natural gas, air, and other gases. The document covers various constructions including Types 627, 627R, 627LR, 627M, 627MR, 627H, 627HM, and 627OSX, detailing their specific features and applications.
| Maximum Inlet Pressure (Stainless Steel Flanged) | 1440 psig / 99.3 bar |
|---|---|
| Maximum Inlet Pressure (NPT Stainless Steel) | 2000 psig / 138 bar |
| Maximum Inlet Pressure (Ductile Iron) | 1000 psig / 69.0 bar |
| Maximum Valve Disk Inlet Pressure (Nylon Disk) | 2000 psig / 138 bar |
| Maximum Valve Disk Inlet Pressure (Nitrile Disk) | 1000 psig / 69.0 bar |
| Maximum Valve Disk Inlet Pressure (Fluorocarbon Disk) | 300 psig / 20.7 bar |
| Maximum Body Outlet Pressure (NPT Steel) | 2000 psig / 138 bar |
| Approximate Weight (Aluminum Casing) | 6.3 lbs / 3 kg |
These regulators can be used with natural gas, air or a variety of other gases.
Only a qualified person must install or service the regulator.
It provides overpressure or overpressure and underpressure protection by completely shutting off the flow of gas.