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外泄式, 平衡, 负载控制阀
Cavity: T-22A | Capacity:
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技术规格
带外接口，平衡型负载控制阀结合了平衡调节单元和反向单向阀两种功能。它允许油液从方向阀（口2）到负载口（口1）单向自由流通，同时先导油液将打开平衡调节单元以控制从口1到口2的液流，口3的先导压力决定流量的设定值。因弹簧腔通外接口（口4），口2的背压不会影响流量的设定值。
- 这款阀没有溢流功能，甚至没有热泄功能。
- 在复位情况下，阀的最大泄漏量：对于I、K、M系列在低于开启压力200psi（14bar）情况下，泄漏量为5滴/分钟（0.3cc/min）；对于E、G、H系列在低于开启压力50psi（3.5bar）情况下，泄漏量为3立方英寸/分钟（50cc/min）。
- E、G、H并不意味着零泄漏的应用。
- 这款阀是与负载平衡，同时可以自我调节。通过先导压力控制流量。由于是动态密封，所以更为适用于出口流量控制，即1口接负载，2口接油箱。
- 所有4口的平衡阀，负载控制阀以及先导开启的单向阀尺寸上都是可以互换的。（它们具有相同的流道，相同的孔型）。
- 这款阀和平衡阀结构上是可以相互替换的，但是并不能很好工作在它侧引流先导的液压缸应用上。低先导比阀可以使机器更稳定，而平衡负载控制型阀拥有极大的先导比。
- 采用单独控制源控制的先导口可以提供更平稳和稳定的负载控制。
- Sun负载控制阀和平衡阀都可以之间安装于执行器外壳处，一次给执行器、回路更安全的保护。
- 此阀在所有口之间完全密封。
- Sun浮动式的结构可以最大限度地减少由于过大的安装扭矩以及孔型加工的误差所造成的干涉现象。
- 插孔T-22A
- 系列2
- 通流能力30 gpm
- 最大操作压力5000 psi
- 单向开启压力25 psi
- 回座时最大泄漏See Technical Features
- 阀头部安装六角尺寸1 1/8 in.
- 阀安装扭矩45 - 50 lbf ft
- Seal kit - Cartridge
- Seal kit - Cartridge
- Seal kit - Cartridge
- 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?
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