Valves and valve actuation – With material guide or restrictor – Movable or resilient guide or restrictor
Patent
1985-10-28
1986-11-25
Walton, George L.
Valves and valve actuation
With material guide or restrictor
Movable or resilient guide or restrictor
137509, 137495, 138 46, 251205, 251285, F16K 4704, F16K 5100
Patent
active
046244441
ABSTRACT:
A control stop for a flushing system including a metering flush valve connected to supply liquid to a toilet fixture. The control stop is in series flow relation between a source of pressurized liquid and the metering flush valve and serves the several functions of controlling flow to the metering flush valve for reducing noise and maintaining desired flushing action, preventing reverse flow and trapping pressure at the metering flush valve in the event of loss of inlet pressure, and shutting off the flow path for installation, service or replacement of the metering flush valve. The control stop includes a regulator having a valving portion engageable with a valve seat communicating with the outlet of the control stop and acts as a low pressure cut-off rather than a check valve. A spring biases the regulator toward the valve seat and the regulator is normally held open by liquid pressure. A stop member is adjustable to limit the opening movement of the regulator for flow control, and can be moved to a position closing the regulator valving surface against the valve seat to shut off the liquid flow path.
REFERENCES:
patent: 2204191 (1940-06-01), Sloan et al.
patent: 2872150 (1959-02-01), Philippe
patent: 3054422 (1962-09-01), Napolitano
patent: 3139114 (1964-06-01), Benzel
patent: 3512550 (1970-05-01), Ammann
patent: 3613716 (1971-10-01), Kornwestheim et al.
patent: 3857542 (1974-12-01), Heymann
Masco Corporation
Walton George L.
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