Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent
1991-01-16
1992-02-25
Rosenthal, Arnold
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Cleaning or steam sterilizing
251 3001, 251 3002, 13759617, 137870, F16K 3106, F15B 13044
Patent
active
050904418
ABSTRACT:
A pressure operated valve includes an inlet and an outlet connected by a main valve having a valve diaphragm member that communicates with an operating pressure chamber. A pilot valve inlet port and a pilot valve outlet port also communicate with the operating pressure chamber. The inlet port is configured in the form of four circular slits of 0.004 to 0.007 inches width. The slits are formed by four pins of a pilot valve insert which fit into four bores in a valve body. Each pin has a ridge on its surface parallel to the pin axis, which pin locates and spaces the pin in the bore to form the slit. The slits are located flush with wall of the main inlet so that water rushing through the inlet washes particles off the slit. The pilot valve outlet port is sealed by an armature comprising a ferromagnetic sleeve and a flexible rubber core. A groove in the core receives the end of a lever which seals the pilot valve inlet port whenever the pilot valve outlet port is open and vice versa.
REFERENCES:
patent: 3654963 (1972-04-01), Ages
patent: 4081171 (1978-03-01), Morgan et al.
patent: 4360037 (1982-11-01), Kendall
Emerson Electric Co.
Meyer Robert F.
Rosenthal Arnold
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