Excess Flow Valve
Excess Flow Valve / Pipe-break Valve
| PN | 325 |
| DN | 6 - 120 |
| NPS | 1/8" - 6" |
| Class | 150# - 1500# |
| Temperature Rating | -196°C up to +800°C |
| Body forms |
Angle pattern body |
| Basic Shell materials |
Carbon steel, Stainless steel, Hastelloy, Inconel, Pure nickel, Titanium, Other special alloys |
| Connections |
Flanged ends, butt welding ends |
| Operation & Options |
Threaded flanges and other requirements |
| Application |
Excess Flow valves are known by other names such as pipe-break valve, velocity check-valve or The valve seat is held open by a spring. When the flow of the fluid exceeds a certain preset limit the valve seat, or disc in this case, closes and shuts off flow. In normal operations of loading and unloading, the in-line flow is restricted by the pressure drop through the hose and or pipeline. In the event of a rupture, disconnection, or line break, the pressure will drop, the flow will surge exceeding the spring load limit, and the valve will close. Main installed base of our excess flow valves is in bullet storage tanks. |
| Approvals |
PED (CE) / ASME |