Solenoid operated, pressure reducing/relieving assembly
This assembly consists of a pilot-operated pressure reducing/relieving valve with a separate drain (port 4) which reduces a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3). Draining the pilot section at port 4 makes these valves insensitive to pressure at tank (port 3) and provides a means for remote control by pilot or 2-way valves. The 2-way, 2-position solenoid operated valve (normally open or closed) on the drain (port 4) allows the selection of turning the reducing/relieving function on or off.
- Pressure on the drain (port 4) is directly additive to the valve setting at a 1:1 ratio and should not exceed 3000 psi (210 bar).
- By controlling the pressure at the drain (port 4), the effective setting of the valve can be increased over the nominal valve setting.
- Pilot operated valves exhibit exceptionally flat pressure/flow characteristics, are very stable and have low hysteresis.
|Interface||ISO 03ISO 03|
|Capacity||10 gpm40 L/min.|
|Body Features||Reducer/reliever on PReducer/reliever on P|
|Stack Height||1.75 in.44,5 mm|
|Seal Plate Included (see notes)||NoNo|
There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
Direct-acting valves are used to prevent over pressure, and pilot-operated valves are used to regulate pressure. If you are unsure, use a direct-acting valve. Sun's direct acting valves are very fast, dirt tolerant, stable, and robust. Sun's pilot-operated valves are moderately fast, they have a low pressure rise vs. flow curve, and they are easy to adjust.
- Seal retainer plate is not required for this assembly.
- Please consider stack requirements when choosing a coil. Sun explosion proof coils are larger than other coils and may interfere with components above or below this manifold. A tap in manifold can be used to add additional clearance.
- Important: Carefully consider the maximum system pressure. The pressure rating of the manifold is dependent on the manifold material, with the port type/size a secondary consideration. Manifolds constructed of aluminum are not rated for pressures higher than 3000 psi (210 bar), regardless of the port type/size specified.
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