Fluid valve having a zirconium oxide coated valve disc

Details Fluid valve having a zirconium oxide coated valve disc Fluid valve having a zirconium oxide coated valve disc

1993-02-26

1994-03-08

Chambers, A. Michael

Fluid handling

Processes

Cleaning, repairing, or assembling

251368, F16L 5518

Patent

active

052919137

ABSTRACT:
A fluid valve has a valve body with a valve seat for receiving a valve disc to close the valve. The valve seat is iron or steel. The valve disc is made of zirconium and has a zirconium oxide layer on disc surface which seats against the valve seat when the valve is closed. The valve has remained in a corrosive service for over six months where the original iron valves not having an oxide coated zirconium disc only lasted a few days.

REFERENCES:
patent: 4269391 (1981-05-01), Saito et al.
patent: 4784178 (1988-11-01), Kasaya et al.
patent: 4808092 (1989-02-01), Funke

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