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. |
| Approvals |
PED (CE) / ASME |