Adjustable safety relief valve
Patent
·
OSTI ID:6658339
This patent describes a pressure relief valve having a relief set pressure. It comprises: a valve body having a fluid inlet and outlet, a spherical, metal valve seat associated with the inlet and a valve member comprising at least a portion of a spherical,metal ball attached to a ball holding element, the valve member being biased against the valve seat and thus providing a metal-to-metal seal preventing the passage of fluids past the valve seat when the fluid pressure in the inlet is below the relief pressure setting of the valve.
- Assignee:
- NOV; EDB-90-140943; NOV-90-026083
- Patent Number(s):
- A; US 4932434
- Application Number:
- PPN: US 7-300664A
- OSTI ID:
- 6658339
- Country of Publication:
- United States
- Language:
- English
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