3-way, 2-position, vent-to-shift diverter valve, normally closed

Capacity: 15 gpm60 L/min. | Cavity: T-31A
DSCX : 3-way, 2-position, vent-to-shift diverter valve, normally closed
Technical Features [ + ]

This is a vent-to-shift, 2-position, diverter valve that is normally closed. When port 1 is vented, the pressure differential between port 3 and port 1 exceeds the spring force causing the valve to shift, thereby connecting port 3 with ports 2 and 4.

  • This valve is not bistable; it is capable of modulating between the two positions shown.
  • Vent flow out of port 1 is pressure compensated and is listed in Technical Data.
  • There must be a pressure source at port 3, relative to port 1, to shift the valve.
  • One application of this valve is to bypass divider/combiner valves in a limited-slip tractive circuit. Closed, the oil must go through the divider/combiner valves. Open, there is a large path around the divider/combiner valves for efficient high speed operation.
  • One pilot valve may be used to vent multiple diverter valves if blocking checks are used at port 1 of each diverter. If blocking checks are not used there will be interaction between high and low pressure legs of the circuit.
  • The vent-to-shift function is self cleaning and therefore insensitive to contamination.
  • Hardened spool and sleeve provide consistent and low spool leakage rates and excellent wear characteristics.
  • 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-31A
Series 1
Capacity 15 gpm60 L/min.
Maximum Operating Pressure 5000 psi350 bar
Nominal Vent Flow 23 in³/min.0,38 L/min.
Valve Hex Size 7/8 in.22,2 mm
Valve Installation Torque 30 - 35 lbf ft41 - 47 Nm
Model Weight .35 lb0,15 kg
Seal kit - Cartridge Buna: 990031007
Seal kit - Cartridge Polyurethane: 990031002
Seal kit - Cartridge Viton: 990031006
Performance Curves [ + ]
FAQs [ + ]

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.

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

Additional Resources [ + ]