Sequence Cartridges

Sun's sequence cartridges are similar to relief cartridges except the pilot is separately drained so that valve setting is not affected by pressure in the outlet port. 

Sun sequence cartridges are normally closed pressure control elements designed to modulate flow from port 1 (inlet) to port 2 (outlet) like a relief valve as long as the pressure at port 1 exceeds the pressure setting plus the back pressure at port 3 (the control chamber drain). Unlike relief valves, sequence valves generate a constant pressure at the inlet port irrespective of the pressure on the outlet port.

Sun's sequence valves offer the following:

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  • Functionally interchangeable with one another (same flow path, same cavity for a given frame size)
  • Offered in five sizes with flow rates up to 120 gpm (480 L/min.)
  • Fully adjustable over a wide range of operating pressures up to and including 5000 psi (350 bar) (6000 psi (420 bar) intermittent) (except air piloted versions)

A typical application for our sequence valves is when maintained clamping pressure is required in the primary circuit while work is being performed in the secondary circuit.

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36 Matching Models
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Symbol Description Model Capacity Cavity
 
Pilot operated, balanced piston sequence valve Pilot operated, balanced piston sequence valve RSBC 7.5 gpm30 L/min. T-163A
RSDC 15 gpm60 L/min. T-11A
RSFC 30 gpm120 L/min. T-2A
RSHC 60 gpm240 L/min. T-17A
RSJC 120 gpm480 L/min. T-19A
 
Pilot operated, balanced poppet sequence valve Pilot operated, balanced poppet sequence valve RSDS 15 gpm60 L/min. T-11A
RSFS 30 gpm120 L/min. T-2A
RSHS 60 gpm240 L/min. T-17A
RSJS 120 gpm480 L/min. T-19A
 
Direct-acting sequence valve with reverse flow check Direct-acting sequence valve with reverse flow check SCCA 15 gpm60 L/min. T-11A
SCEA 30 gpm120 L/min. T-2A
SCGA 60 gpm240 L/min. T-17A
SCIA 120 gpm480 L/min. T-19A
 
Atmospherically referenced, direct-acting sequence valve with reverse flow check Atmospherically referenced, direct-acting sequence valve with reverse flow check SCEB 30 gpm120 L/min. T-5A
 
Atmospherically referenced, direct-acting sequence valve without reverse flow check Atmospherically referenced, direct-acting sequence valve without reverse flow check SXCB 15 gpm60 L/min. T-13A
 
Direct-acting sequence valve without reverse flow check Direct-acting sequence valve without reverse flow check SXCA 15 gpm60 L/min. T-11A
SXEA 30 gpm120 L/min. T-2A
 
Kick-down, pilot operated, balanced piston sequence valve Kick-down, pilot operated, balanced piston sequence valve SQBB 7.5 gpm30 L/min. T-163A
SQDB 15 gpm60 L/min. T-11A
SQFB 30 gpm120 L/min. T-2A
SQHB 60 gpm240 L/min. T-17A
SQJB 120 gpm480 L/min. T-19A
 
Air-controlled, pilot operated, balanced piston sequence valve Air-controlled, pilot operated, balanced piston sequence valve RSFE 30 gpm120 L/min. T-2A
RSHE 60 gpm240 L/min. T-17A
RSJE 120 gpm480 L/min. T-19A
 
Pilot operated, balanced piston sequence main stage with integral T-8A control cavity Pilot operated, balanced piston sequence main stage with integral T-8A control cavity RSDC8 15 gpm60 L/min. T-11A
RSFC8 30 gpm120 L/min. T-2A
RSHC8 60 gpm240 L/min. T-17A
RSJC8 120 gpm480 L/min. T-19A
 
Pilot operated, balanced poppet sequence main stage with integral T-8A control cavity Pilot operated, balanced poppet sequence main stage with integral T-8A control cavity RSDS8 15 gpm60 L/min. T-11A
RSFS8 30 gpm120 L/min. T-2A
RSHS8 60 gpm240 L/min. T-17A
RSJS8 120 gpm480 L/min. T-19A
 
Symbol Description Model Capacity Cavity
 
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QuickSelect™ LoadHolding Selector