Metering valve for hydrofluoric plants

Details Metering valve for hydrofluoric plants Metering valve for hydrofluoric plants

2004-05-21

2008-12-23

Fox, John (Department: 3753)

Fluid handling

With casing, support, protector or static constructional...

Jacketed

C251S332000

Reexamination Certificate

active

07467641

ABSTRACT:
A metering valve for hydrofluoric plants, comprising a flow chamber for the flow of the fluid, housing a plug and having an inlet passage and another outlet passage, a guide body through which the actuator stem for actuating the plug member runs, and an actuator head. The flow chamber internally has guides parallel to the stem which guide the plug. A ring constituted of an iron, copper and nickel alloy is screwed in at the outlet passage.

REFERENCES:
patent: 2417351 (1947-03-01), Covington
patent: 4065302 (1977-12-01), Turillon
patent: 4621656 (1986-11-01), Ichimaru
patent: 4714237 (1987-12-01), Linderman et al.
patent: 6263904 (2001-07-01), Zdunek et al.
patent: 6681484 (2004-01-01), Nagatsuka et al.
patent: 2 024 281 (1992-02-01), None
patent: 1 394 645 (1975-05-01), None

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