Sanitary drain valve

Details Sanitary drain valve Sanitary drain valve

2005-12-23

2009-08-11

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Reciprocating valve

Diaphragm

C251S144000

Reexamination Certificate

active

07571892

ABSTRACT:
A valve assembly includes a valve body having an internal cavity, an orifice in communication with the internal cavity for communicating with a process in a tank or conduit and an outlet through which process material entering the internal cavity through the orifice can be drained from the internal cavity. A valve actuator body includes an actuating shaft having a sealing tip and is mounted for movement in the valve actuator body to seal and unseal the orifice. A diaphragm is mounted to the sealing tip and includes a base that seals with a bottom wall of the valve body. The bottom of the valve body has an aperture that receives the actuating shaft therethrough. The diaphragm is mountable to and removable from the bottom wall of the valve body through the aperture.

REFERENCES:
patent: 3399695 (1968-09-01), Stehlin
patent: 4917357 (1990-04-01), Danko
patent: 5152500 (1992-10-01), Hoobyar et al.
patent: 5246204 (1993-09-01), Ottung
patent: 6491283 (2002-12-01), Newburg
patent: 6601823 (2003-08-01), Newburg

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