| 摘要 |
A drinker system for delivering water to animals comprising: a central pressure regulator; drinker lines with drinker nozzles; pressure reduction valve devices providing an outlet pressure proportional to the pressure set by the central pressure regulator; each valve device comprising: a housing defining a relatively high pressure zone and a relatively low pressure zone; a relatively small area diaphragm in the relatively high pressure zone; a relatively large area diaphragm in the relatively low pressure zone, and rigidly connected to the small area diaphragm; a flow regulating valve through which liquid can flow from the relatively high pressure zone to the relatively low pressure zone; and an internal by-pass mechanism for allowing liquid to flow from the valve device inlet to the valve device outlet bypassing the flow regulating valve. |
