| Control
Valves |
Controls |
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Single Stage- Relief Valve (Adjustable) |
 |
By Twist |
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Two Stage Relief Valve-Internal/External Pilot
operated (Adjustable) |
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By Push Button |
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Two Stage Sequence Valve-Internal/External Pilot
operated ( Normally Closed Adjustable) |
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By Pull Button |
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Two Stage Proportional Pilot Operated Relief Valve |
 |
By Lever |
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Single Stage Reducing Valve (Adjustable) |
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By Foot Pedal |
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Two Stage Reducing/Relieving Valve-Internally
Pilot Operated (Adjustable) |
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By Plunger |
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Gate Valve |
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By Roller |
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Check Valve-Spring Closed |
 |
By Spring |
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Pilot to Open Check Valve |
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By Single Solenoid (One winding) |
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Adjustable Restrictor Valve |
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By Single Solenoid (Two Opposed Windings) |
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Variable Pressure Compensated Flow Control Valve |
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By Electric Motor |
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Priority Flow control |
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By Pneumatic Pilot Pressure (Direct) |
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Flow Divider/Combiner Fixed Ratio Outputs |
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By Differential Pilot Areas |
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One Way Adjustable Restrictor Valve-With Free Flow
in One Direction & Restricted Flow in the other Direction |
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By Oil Pressure (via Control) |
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Shuttle Valve |
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By Pneumatic Pressure (via control) |
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Quick Exhaust Valve (Pneumatic) |
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By Internal Control Path |
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By External Control Path |
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By Solenoid Operated Pilot Valve |
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Notes: Valve control symbols may be drawn at any
convenient position across end of valve rectangle. |
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