电比例, 直动式 减压/溢流阀 带过滤网, 3000 psi (210 bar) - 通用孔型
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该电比例直动式减压溢流阀,将进口(2口)高压减压为一恒定出口(1口)压力,并在1口和3口之间带溢流功能。该阀初始为关闭状态。线圈通电时,将2口和1口连通。增加线圈电流将会成比例增加1口的减压压力。若1口压力超过了线圈电流决定的设定压力,1口将会往3口溢流。该阀在减压模式和溢流模式之间为闭式过渡位,因此具有较低泄漏。
- 电磁铁组件的疲劳耐压等级为3000 psi (210 bar)。
- 3口的压力将以1:1叠加到阀的设定值上。
- 该阀2口装有280微米的滤芯。
- 泄漏量为3口泄漏,2口压力3000 psi (210 bar),1口堵住。
- 为了得到最佳性能,应当使用具有电流反馈和可调颤振的放大器。推荐颤振频率200 Hz。
- 该阀可选择推式手动操作。当选M控制时,阀的压力设定没有上限。施加的推力越大,设定值越高。该选项额定压力也为3000 psi (210 bar)。
- 该阀安装力矩应当为22 lbf ft (30 Nm)以获得最佳性能。
- 减压口(1口)到进油口(2口)的反向全流量可能会使阀芯关闭。若回路需要反向流量,考虑增加一个额外的反向单向阀。
- 金属线圈螺母为电磁功能的一部分,其应当正确安装到位以保证阀的正常功能。
- 线圈接头选项提供最高IP67的防护等级。详见线圈产品页面。
- 线圈可以双向安装到螺线管上。
插孔 | SC-08-03 |
系列 | 0C |
通流能力 | 1 gpm4 L/min. |
最大操作压力 | 3000 psi210 bar |
典型阀泄漏,在110 SUS (24 cSt) | 0.3 in³/min.@3000 psi4,5 mL/min.@210 bar |
衔铁直径 | .51 in..51 in. |
阀头部安装六角尺寸 | 7/8 in.22,2 mm |
线圈锁紧螺母扭矩 | 3.5 - 3.9 lbf ft4,8 - 5,3 Nm |
阀安装扭矩 | 21 - 23 lbf ft28 - 31 Nm |
型号重量 | .35 lb0,15 kg |
Our reducing valves are outside-in valves; the supply pressure on the outside of the working parts is higher than the inside. At some pressure differential, the outside (sleeve) will close in on the piston and cause the valve to stick. A D range is adjustable from 25 to 800 psi with a maximum differential of 2000 psi. This means you could set the valve at 600 psi and expect it to work correctly with a supply pressure of 2600 psi. The valve may work at higher differentials, but we do not recommend it. The W and C ranges are tested over their entire range with an inlet pressure of 5000 psi. All direct-acting valves are tested with an inlet pressure of 5000 psi.
No. A reducing/relieving valve throttles a supply of oil to maintain a set pressure in a secondary circuit. The valve is open until the secondary or downstream pressure rises to the setting of the valve at which time it starts to close to limit the pressure. If the secondary or downstream pressure is caused to go above the setting, the valve shifts into relieving mode and throttles the secondary circuit back to tank to prevent over-pressure. At no time can the valve connect the supply to tank.
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.
Yes. A reducing or reducing/relieving valve is normally open. If the pressure in the secondary circuit is less than the setting, it will be open.
2 caveats: (1) If the valve is in the reducing mode and you suddenly reverse the flow, the valve will not have time to open and will shift into relieving mode or (2) If the back flow generates a pressure drop through the valve that exceeds the setting, the valve will shift into the relieving mode.
When in doubt, use a reverse flow check.
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。
Yes. If you look in the sandwich section you will see that we offer many such packages. When you are pressurizing B, A is connected to tank, allowing the reducer to do its job. When you reverse, the drain or tank port of the reducer is pressurized by A. This increases the setting of the reducer and helps keep the reducer open in the reverse flow direction.
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