| http://www.w3.org/ns/prov#value | - In the new structure, the valve trim includes a form of flow restrictor, which serves to limit flow velocity and which causes the fluid pressure to be reduced in...http://www.google.com/patents/US4279274?utm_source=gb-gplus-sharePatent US4279274 - Fluid control device with disc-type flow restrictorAdvanced Patent SearchPublication numberUS4279274 APublication typeGrantApplication numberUS 06/095,6
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