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带外接口 负载匹配™ 平衡阀
Cavity: T-21A | Capacity:
技术规格
此类阀为自我设定平衡阀同时结合了一些附加功能;反向自由流,负载和热溢流。单向阀允许油液从方向阀(口2)到负载口(口1)单向自由流通,同时直动式,带先导溢流功能可自动调节设定即将负载压力的1.3倍加到热溢流阀的设定上。因弹簧腔通外接口(口4),口2的背压不会影响阀的自我设定值。
- 负载匹配阀的控制方式捡回允许阀的设定值动态匹配负载值,同时也提供固定的热泄流压力保护。内部控制将会动态设定溢流值,此值小于热泄流压力值,但是这对于提供安全可靠的负载控制是必要的。同时,由于动态设定值是小于热泄流压力值,而其它负载控制阀的溢流压力都和热泄流压力相等,所以阀工作时的先导压力比起其它负载控制阀都小。
- 负载匹配阀跟其他的平衡阀比较,可以采用更低先导开启压力,而不是固定的溢流压力设定。
- 对于负载匹配阀而言,在任何正常负载压力下,它的先导压力近似不变。
- 所有的4口平衡阀,负载控制阀,以及先导开启单向阀都结构上可以相互替换。(对同样的规格情况下,他们是相同流量路径相同孔型)。注意:这款阀比其它阀具有更大的外六角尺寸,使用时应注意。
- 耐腐蚀插装阀适用于在腐蚀性环境中使用,并通过型号代码后缀/AP标识外部不锈钢组件,或/LH标识外部镀锌镍镀组件。有关选项,请参阅配置部分。欲了解更多详情,请查看位于技术资料下的结构材料页面。
- 该阀为4口平衡阀。阀口为座阀形式,具有长行程流量调节。
- 对G系列,最大的推荐负载压力为4625psi(319bar)。G系列最大开启压力为5800-6350 psi(400-438 bar)。
- 对H系列,最大的推荐负载压力为3075psi(212bar)。H系列最大开启压力为3850-4250 psi(265-293 bar)。
- 对J系列,最大的推荐负载压力为3850psi(265bar)。J系列最大开启压力为4800-5300 psi(331-365 bar)。
- 负载匹配阀的复位压力占开启压力的百分比都是一样的。设定误差如提示所示。
- 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。
- 这款阀有完全的溢流能力。
- 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-21A
- 系列1
- 通流能力15 gpm
- 最大操作压力5000 psi
- 最大推荐负载压力See Technical Features
- 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.
- 复位≥77% of setting
- 阀头部安装六角尺寸1.00 in.
- 阀安装扭矩30 - 35 lbf ft
- 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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