Elwood Dalian
117 Youhao St. ∙ Jinzhou district ∙ 116100
Dalian ∙ China ∙ +86 411-6232-8880 ∙ Elwood.Dalian@gmail.com
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PRESSURE CONTROL VALVES
Pressure Control Valves ( Water / Soluble Oil )
    FEATURES:
  • Simple design that is compact in size.
  • Easily convertible from relief to reducer or vice versa.
  • Valves are designed for either SAE flange or manifold mounting (see ordering data).
  • All working internals are heat treated stainless steel.
  • All parts are replaceable, plus the seat is reversible, for additional service life.
  • The adjustable orifice restrictor is standard on all valves. This adds considerable life to the component.
  • Internal and external pilot feeds and drains, as well as, gauge connections located for flexibility and easy maintenance.

TYPICAL CROSS SECTIONS OF VALVES

Reducing Valve Relief Valve
Pressure Relief or Reducing Valve

System pressure is set by adjusting the pilot relief control valve. For the valve’s pressure setting, a pressure balance on the main spindle allows the spring to hold the valve in a closed position (relief valve) or an open position reducing valve) - refer to valve cut a ways above.

When system pressure working on the pilot poppet exceeds set pilot relief adjustment, a pilot flow is

established to the external drain. This pilot flow creates a differential force on the main spindle because of a pressure drop through the orifices installed in the pilot control line.

NOTE: The adjustable orifice plug allows a pre-pressure drop to occur in the valve allowing the main spindle to create a larger opening in the sealing area, adding to the life of the valve.
 
 
 
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