Control valve mechanism for regulating flow rate and differential pressure of water has capsule spring with linear characteristic mounted between valve stem and cone which measures differential pressure

摘要

The control valve mechanism for regulating the flow rate and differential pressure of water has a capsule spring (11) with a linear characteristic mounted between valve stem (6) and cone (14). This measures the differential pressure. Independent claims are included for: (A) thermostatic valves fitted with the mechanism; and (B) shut-off valves for bathroom appliances fitted with it.