Aseptic valve construction with diaphragm having straight neck

Details Aseptic valve construction with diaphragm having straight neck Aseptic valve construction with diaphragm having straight neck

1998-04-14

2000-11-14

Fox, John

Valves and valve actuation

Reciprocating valve

Diaphragm

2513352, F16K 712

Patent

active

061458104

ABSTRACT:
An aseptic valve construction including a valve body having an inlet flow passage and at least one outlet flow passage. The valve body has a valve seat surrounding the inlet flow passage and has an opening therein in alignment with the inlet flow passage and in communication with the inlet flow passage and with the at least one outlet flow passage. A shoulder providing a shoulder seat surrounding the opening is provided in the valve body. A diaphragm is disposed in the valve body and has a surface adapted to be moved into engagement with the valve seat and another surface in engagement with the shoulder seat. The diaphragm has a cylindrical portion extending between the surface engaging the valve seat and the surface engaging the shoulder seat. The cylindrical portion has a length and a constant inner diameter and a constant outer diameter along its length for preventing the cylindrical portion from buckling or wrinkling. A method for operating the aseptic valve construction of the present invention is provided.

REFERENCES:
patent: 2645238 (1953-07-01), Thornbery
patent: 4251053 (1981-02-01), Wurzer
patent: 4819691 (1989-04-01), Lofgren et al.
patent: 5152500 (1992-10-01), Hoobyar et al.
patent: 5452746 (1995-09-01), Hoobyar et al.
NovAseptic Equipment AB, "The NovAseptic sanitary Tank Outlet Valves," (1997 or earlier), 7 pgs.

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