Spring offset, 2-position, high side shuttle valve
![DSCO : Spring offset, 2-position, high side shuttle valve](https://cmsimages.sunhydraulics.com/cartg_dsco.gif)
Spring-offset, high-side shuttle cartridges are 2-position valves that have a normal (offset) position that connects the common port (port 3) to work port 4, with work port 2 blocked. When the pressure at port 2 rises above the pressure at port 4, the cartridge shifts to connect the common port to port 2 with port 4 then blocked.
- Although this valve goes into a 4-port cavity, the nose (port 1) is not used.
- 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.
Cavity | T-31A |
Series | 1 |
Capacity | 15 gpm60 L/min. |
Maximum Operating Pressure | 5000 psi350 bar |
Maximum Valve Leakage at 110 SUS (24 cSt) | 1 in³/min.@1000 psi15 cc/min.@70 bar |
Valve Hex Size | 7/8 in.22,2 mm |
Valve Installation Torque | 30 - 35 lbf ft41 - 47 Nm |
Model Weight | .40 lb0,20 kg |
Seal kit - Cartridge | Buna: 990031007 |
Seal kit - Cartridge | Polyurethane: 990031002 |
Seal kit - Cartridge | Viton: 990031006 |
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.
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