Metering valve for water faucet

Details Metering valve for water faucet Metering valve for water faucet

1990-12-03

1992-07-21

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251339, 251 40, 119 725, 222509, 222518, F16K 31363

Patent

active

051316226

ABSTRACT:
A metering valve for water faucet that is triggered at the water discharge by a light touch on the trip stem so that the hand that triggers the valve is ready at the washing position at the start of the water flow. The disclosed metering valve consists of a trip stem which penetrates through the valve outlet port to the exterior of the valve. There is a pressure chamber wherein the pressure controls the open and closure of the valve. The pressure in the pressure chamber is determined by means of feed and bleed. In the closure mode the bleed opening is blocked and the pressure chamber is pressurized by the water supply through the feed. A light touch on the trip stem causes the bleed to open and a depressurization in the pressure chamber. This opens the valve and starts a metering cycle. After the trip stem is release, the bleed is blocked again and the pressure chamber starts to recover its pressure slowly through the feed flow path. The pressure in the pressure chamber, when it is fully recovered, closes the valve and completed a metering cycle.

REFERENCES:
patent: 2710736 (1955-06-01), Miller
patent: 2991795 (1961-07-01), Fraser et al.
patent: 4512551 (1985-04-01), Dalferth
patent: 4784368 (1988-11-01), Koch et al.
patent: 4940206 (1990-07-01), Sheen
patent: 4981160 (1991-01-01), Sen-Tein

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