3通, 气控操作式, 滑阀换向阀 - 先导流量
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此类先导级2位3通换向阀为气控,弹簧偏置阀且有两种阀芯配置;口1和口2常开或口1和口3常开。
- 有不同的先导控制口选项可选。如需详细信息,请参阅选项选择。
- 硬化的阀芯和阀套使阀具有一致性操作,低的阀芯泄漏速率和优越的耐磨特性。
- 操作此阀的最小先导压力由以下方程决定:先导压力=20 psi + 压力 @ 口 1 除以100。因此先导压力范围为20到70 psi;公制计算为,先导压力=1,4 bar + 压力 @ 口 1 除以100。因此先导压力范围为1,4到5 bar。
- 除先导口只能耐压500 psi(35 bar)外,所有口均可耐压5000 psi (350 bar) 。
- 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-9A |
系列 | P |
通流能力 | .25 gpm1 L/min. |
最大操作压力 | 5000 psi350 bar |
110 SUS (24 cSt)下的最大泄漏 | 10 drops/min.@5000 psi0,7 cc/min.@350 bar |
操作所需最小先导压力 | 20 [+ port 1 press./100] psi1,5 [+ port 1 press./100] bar |
先导控制口 | See Control OptionsSee Control Options |
阀头部安装六角尺寸 | 7/8 in.22,2 mm |
阀安装扭矩 | 20 - 25 lbf ft27 - 33 Nm |
Seal kit - Cartridge | Buna: 990509007 |
Seal kit - Cartridge | Viton: 990509006 |
There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
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.
In many circuits the directional cartridge is set to shift at a low pressure no matter how high the pilot pressure goes. If you use a DP__ , the pilot flow increases to significant amounts. A DR__ however will only consume a small amount of flow. A DP__ is useful when you want to block or open the pilot flow to shift the valve.
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