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Vented, 1.5:1 pilot ratio, load reactive, load control valve
Cavity: T-23A | Capacity:
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Technical specifications
Vented, load reactive load control valves with pilot assist combine two valves; a check valve and a relief valve. The check valve allows free flow from the directional valve (port 2) to the load (port 1) while a direct-acting, pilot-assisted relief valve controls flow from port 1 to port 2. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. Backpressure at port 2 does not affect the valve setting because the spring chamber references the vent (port 4).
- Set at least 1.3 times the maximum load induced pressure (1.5 times when the setting is less than 2000 psi or 140 bar).
- The maximum recommended load pressure for the H range is 3080 psi (212 bar).
- The maximum recommended load pressure for the J range is 3850 psi (265 bar).
- Turn adjustment clockwise to decrease setting and release load.
- Full clockwise setting is 1000 psi (70 bar) for the H range and 2000 psi (140 bar) for the J range.
- These valves are capable of modulating over a broader range of flows than the pure poppet designs. The longer stroke allows us to incorporate a uni-directional damping device that smooths the opening and lets the valve close quickly.
- This valve is functionally a 4-port counterbalance valve. It seats as a poppet valve and modulates as a spool valve, offering the best of both valve types.
- All 4-port counterbalance, load control, and pilot-to-open check cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size).
- Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
- Sun load control and counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit.
- This valve has positive seals between all ports.
- This valve has full relief capacity.
- 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
- Series
- Capacity60 gpm
- Maximum Operating Pressure5000 psi
- Pilot Ratio1.5:1
- Maximum Recommended Load PressureSee Technical Features
- Adjustment - No. of CCW Turns from Min. to Max. Setting9
- Check Cracking Pressure25 psi
- Factory Pressure Settings Established at2 in³/min.
- Maximum Valve Leakage at Reseat5 drops/min.
- Reseat≥77% of setting
- Valve Hex Size1 1/4 in.
- Valve Installation Torque150 - 160 lbf ft
- Adjustment Screw Internal Hex Size5/32 in.
- Locknut Hex Size9/16 in.
- Locknut Torque80 - 90 lbf in.
- Seal kit - Cartridge
- Seal kit - Cartridge
- Seal kit - Cartridge
Why is turning the adjust screw for counterbalance valves opposite of most other valves?
What parts of the Sun cartridge valve are field serviceable?
You say your valves leak 5 drops/min. How can I keep my load from drifting?
How do I determine the setting of a counterbalance valve?
How do I know how much pilot pressure is required to lower a load with a counterbalance valve?
When should I use a vented counterbalance valve?
How does Sun test a counterbalance valve for leakage?
How do I decide which pilot ratio to select?
How big is a drop of hydraulic oil?
Why can't I use a counterbalance valve in a closed loop transmission circuit?
What do you mean by the setting of a counterbalance valve and what should it be?
I don't need pilot assist. Can I just block port 3?
Can I use an atmospherically vented counterbalance valve instead of the four-port version to save on plumbing?
Why is it that your valves have pilot ratios below 10:1, while other manufacturers start at 7:1 and go up?
Why can't I block the pilot vent port? That area is positively sealed, isn't it?
Should I replace the counterbalance valve if my cylinder is drifting or moving?
I have a pilot-to-open check on a large cylinder and the decompression is violent. Can I use a counterbalance instead?
How do I size a counterbalance valve?
Can I adjust a counterbalance valve in the field?
Why do you offer 2 check valve cracking pressures?
What happens to the counterbalance valve if I have backpressure in my system?
What do you mean by hysteresis when referring to a counterbalance valve?
- MWGBX Fixed setting, vented, 1.5:1 pilot ratio, load reactive, load control valve
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