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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||251/025; 137/63015; 251/243|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 2 인용 특허 : 7|
A fluid control valve has a valve member which, on closing creates a stagnation zone between the valve member and a surface within the valve. In the stagnation zone fluid pressure is greater than it is in an adjacent constriction zone. This causes the valve to close slowly, thereby reducing the likelihood that water hammer will occur on closure of the valve. The design of the valve member also reduces resonances which can cause annoying noises and premature wear. A flow restriction chamber further slows closure of the valve. The fluid control valve may b...
1. A 3-way pilot valve, the pilot valve comprisinga) a valve body having an inlet port, an outlet port and a pilot port, b) a first valve member movably disposed within the body, the first valve member having an open position wherein the inlet and pilot ports are in fluid communication and a closed position wherein the inlet and pilot ports are not in fluid communication, the first valve member arranged so that it is held in its closed position when a fluid pressure at the inlet port is higher than a fluid pressure at the pilot port; c) a second valve me...