The Type 81P is a direct spring operated valve designed specially for liquid service.
Anderson Greenwood CrosbyP is a direct spring operated valve designed specially for liquid service. The valve is fully open by 10% overpressure and has a pressure-loaded spindle ring to ensure stability with no chatter. The trim is fully back pressure balanced without the use of a bellows. The 81P can be stamped as certified to both ASME Section VIII and Section III.
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