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导压比 1:1, 带外泄口 平衡阀
Cavity: T-22A | Capacity:
技术规格
带先导协助开启的带外接口型平衡阀是用来控制超驰负载。它允许油液从方向阀（口2）到负载口（口1）单向自由流通，同时直动式，先导协助溢流阀功能可以控制从口1到口2的液流。口3的先导协助以先导比率的作用系数降低了溢流功能的有效设定值。因弹簧腔通外接口（口4），口2的背压不会影响阀的设定值。此阀还被称作运动控制阀或者越过中心阀。
- 平衡阀的设定值应该至少为负载压力值的1.3倍。
- 顺时针旋转调节将会减少设定，降低压力。
- 完全释压情况下，设定等于200psi（14bar）。
- 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）。
- 标准设定下，阀的复位压力值高于阀开启值的85%。当设定值小于标准设定值，复位压力值的百分比将相应变小。
- 4口的压力将会增加溢流值，增加值为（1+先导比）×压力值。
- Sun的平衡阀可以被安装进执行器内部的安装孔，成为执行器的一部分，进而更加安全地保护回路。
- 这种阀在所有的口之间都完全密封。
- 和无外部泄流的相比，为保证机器工作平稳，外部泄流阀可以采用更低先导比保证机器。
- 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
- 先导比1:1
- 最大设定时最大推荐负载压力3075 psi
- 最大设定4000 psi
- 单向开启压力25 psi
- 回座时最大泄漏5 drops/min.
- 工厂默认的设定值2 in³/min.
- 调节 - 从最小设定到最大设定的逆时针圈数5
- 运行特性标准
- 复位>85% of setting
- 阀头部安装六角尺寸1 1/8 in.
- 阀安装扭矩45 - 50 lbf ft
- 调节螺栓的内六角尺寸5/32 in.
- 锁紧螺母六角尺寸9/16 in.
- 锁紧螺母力矩80 - 90 lbf in.
- 型号重量.65 lb
- Seal kit - Cartridge
- Seal kit - Cartridge
- Seal kit - Cartridge
- Seal kit - Cartridge
- Seal kit - Cartridge
- Seal kit - Cartridge
Model CAD Files
Symbol CAD Files
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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