Valves and valve actuation – With means for blocking or disabling actuator – Released by non-valving actuator motion
Patent
1994-09-26
1996-05-28
Michalsky, Gerald A.
Valves and valve actuation
With means for blocking or disabling actuator
Released by non-valving actuator motion
137218, F16K 3502
Patent
active
055203671
ABSTRACT:
An anti-syphon valve comprises a base pipe having inlet and outlet legs and a valve seat, disposed at the top of the base pipe within a valve stem post, which can be rotated selectively to block the inlet leg (closed position) or open it (open position). A metering peg extends from the valve stem post into a receptacle in the valve seat. Inlet and outlet passages corresponding to the inlet and outlet legs are disposed above the seat, and a float located at the top of the inlet passage allows fluid flow from the inlet passage into the outlet passage in the open position while blocking fluid flow from the outlet passage to the inlet passage in the closed position. Vent passages are provided above the float to enable communication of the outlet passage to atmosphere in the closed position. A handle is provided on the valve stem post to selectively rotate the latter to place the valve in open or closed position. A spline arrangement between the handle and the valve stem post requires the handle to be lifted to engage the valve stem post before rotating it.
REFERENCES:
patent: 2325956 (1943-08-01), Holtman
patent: 2584436 (1952-02-01), Donaldson
patent: 2590386 (1952-05-01), Dobrick
patent: 2814304 (1957-11-01), Sloan
patent: 2829538 (1958-04-01), Mueller
patent: 2850034 (1958-09-01), Svabek, Jr. et al.
patent: 2990843 (1961-07-01), Smith
patent: 3700178 (1972-10-01), Verley
patent: 3788342 (1974-01-01), Milette et al.
patent: 4399947 (1983-08-01), Spelber et al.
patent: 4405159 (1983-09-01), Spelber
patent: 4410001 (1983-10-01), Goguen
patent: 4553560 (1985-11-01), Tucker et al.
patent: 4573642 (1986-05-01), Spelber
patent: 4589438 (1986-05-01), Breda
patent: 4635848 (1987-01-01), Little
patent: 4951702 (1990-08-01), Brotcke
patent: 5022429 (1991-06-01), Rollini et al.
patent: 5038814 (1991-08-01), Gayton et al.
patent: 5060687 (1991-10-01), Gayton
patent: 5063619 (1991-11-01), Ross et al.
patent: 5125429 (1992-06-01), Ackroyd et al.
Environmental System & Solutions, Inc.
Michalsky Gerald A.
LandOfFree
Anti-syphon fluid control valve apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anti-syphon fluid control valve apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-syphon fluid control valve apparatus and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-781512