Atmospherically referenced, direct-acting sequence valve without reverse flow check

Capacity: 15 gpm60 L/min. | Cavity: T-13A
SXCB : Atmospherically referenced, direct-acting sequence valve without reverse flow check
Technical Features [ + ]

Atmospherically referenced, direct-acting sequence valves will supply a secondary circuit with flow once the pressure at the inlet (port 1) has exceeded the valve setting. The pressure setting of this sequence valve controls the pressure at port 1 relative to the atmospheric vent.

  • Suitable for use in load holding applications.
  • Atmospherically referenced valves should only be used where it is impossible have a drain connection. Over time, the atmospherically referenced valves may leak externally or allow moisture into the spring chamber.
  • Approximately 1 drop (0,07 cc) of fluid will pass into the vented spring chamber every 4000 cycles.
  • Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
Technical Data [ + ]
Note: Data may vary by configuration. See CONFIGURATION section.
Cavity T-13A
Series 1
Capacity 15 gpm60 L/min.
Factory Pressure Settings Established at 2 in³/min.30 cc/min.
Maximum Operating Pressure 5000 psi350 bar
Response Time - Typical 2 ms2 ms
Maximum Valve Leakage at Reseat 10 drops/min.0,7 cc/min.
Adjustment - No. of CW Turns from Min. to Max. setting 44
Valve Hex Size 7/8 in.22,2 mm
Valve Installation Torque 30 - 35 lbf ft41 - 47 Nm
Adjustment Screw Internal Hex Size 5/32 in.4 mm
Locknut Hex Size 9/16 in.15 mm
Locknut Torque 80 - 90 lbf in.9 - 10 Nm
Model Weight .30 lb0,15 kg
Seal kit - Cartridge Buna: 990010007
Seal kit - Cartridge EPDM: 990010014
Seal kit - Cartridge Polyurethane: 990010002
Seal kit - Cartridge Viton: 990010006
Performance Curves [ + ]
FAQs [ + ]

There are exactly 250 Sun drops in a cubic inch or 15 in a cc.

A sequence valve opens when the pressure at port 1 exceeds the setting of the valve. When pressures at port 1 and port 2 both exceed the setting of the valve the valve goes full open, or sequences. When this happens flow can go in either direction, just so long as port 1 stays above the setting.

Pressure setting tolerances are listed in our Performance Data page. A link to this page can also be found in the Additional Resources tab of the applicable product page.

Additional Resources [ + ]