气控, 直动式溢流阀 - 先导流量
气控式,先导级溢流阀常用于先导控制式阀的远程压力设定。由于此类阀流量能力仅限于先导级别,因此它们应该与其它需相匹配先导流量要求的阀一起使用。它们利用压缩空气作用在隔膜上以代替可调节弹簧来控制压力设定。空气信号供给是通过阀的六角螺母部位的导气口进行。
- 最大空气压力不能超过150 psi (10 bar)。
- 油箱口(口2)处的背压对压力设定值没影响。背压不能超过1000 psi (70 bar)。
- 能够提供压力设定的防爆远程控制,液压设定直接与气压设定成20:1正比(液压:气压)。
- 利用Sun浮动结构减少由于过量安装扭矩或插孔/插装阀加工误差带来的内部零件粘结的可能性。
插孔 | T-3A |
系列 | 2 |
通流能力 | .5 gpm2 L/min. |
最大操作压力 | 2000 psi140 bar |
先导比 | 20:120:1 |
110 SUS (24 cSt)下的最大泄漏 | 5 drops/min.0,3 cc/min. |
额定响应时间 | 2 ms2 ms |
阀头部安装六角尺寸 | 1 1/8 in.28,6 mm |
阀安装扭矩 | 45 - 50 lbf ft61 - 68 Nm |
型号重量 | .50 lb0,25 kg |
Seal kit - Cartridge | Buna: 990203007 |
Seal kit - Cartridge | Viton: 990203006 |
There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
Maybe not. We build in a good amount of overlap in the kick-down reliefs to prevent false tripping. This means they are not as fast as our standard pilot operated reliefs. A direct-acting relief valve set just above the kick-down relief valve would be good insurance.
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.
设置压力的误差在产品的性能参数页中都有详细说明,您可以通过点击可选产品网页中的更多产品信息到达产品性能参数页面。
One graphic example is on a portable grain auger for silos. When the farmer gets caught in the auger the kick-down relief trips and allows him to escape.
- Another Optimized Solution from Sun Hydraulics!
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