FLeX系列 先导式, 常闭, 电比例 节流阀 - 流量 2到1 - 3000 psi (210 bar)
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此阀是一款先导控制,常关,电比例节流阀,带反向单向阀。比例电磁铁得电可以在先导级产生作用力,从而比例地打开主级的阀芯。液流方向为2口流向1口。电比例开启时,1口到2口反向流动将会使阀口关闭,仅仅有先导流量从1口流向2口。
- 通流能力在200 psi (14 bar)压差以及最大线圈电流下测得。
- FLeX系列比例阀完美适配Sun XMD系列可扩展移动控制器。
- 设计并通过1000万次寿命测试。
- 疲劳和爆破等级符合NFPA测试标准T2.6.1 R2014。
- 和其他厂家类似产品相比提高了线性度和分辨率。
- 使用CFD流体仿真辅助设计优化几何形状。
- 为了获得更好的性能,应当使用带颤振调节功能(100-250Hz)和电流反馈的放大器。
- 根据液压回路需要,在使用FPB*以及外部补偿器进行组合的时候,需要用反向单向阀使油液能够反向自由流动。
- 该阀的所有配置均为锌镍镀层,提供1000小时盐雾保护。
- 多种线圈插头形式和电压可选,带或不带浪涌保护。见配置部分。
- 不同线圈插头形式提供最高IP69K防护等级,详情见各线圈产品页面。
- 该阀适用于740系列低功率线圈。
- 该阀的完整参数页可以在本网页上部下载。
- 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-162A |
系列 | 0 |
通流能力 | 5 gpm20 L/min. |
最大操作压力 | 3000 psi210 bar |
滞环(在颤振作用下) | 15%15% |
线性度(在颤振作用下) | 3%3% |
重复精度(带颤振) | 3%3% |
推荐颤振频率 | 140 Hz140 Hz |
110 SUS (24 cSt)下的最大泄漏 | 0.004 in³/min.@3000 psi0,07 cc/min.@210 bar |
单向开启压力 | 100 psi7 bar |
粘度范围 | 35 - 2000 SUS2,8 - 380 cSt |
名义死区(一定的输出) | 48%48% |
额定响应时间 | 50 ms50 ms |
切换频率 | 15,000 max. cycles/hr15,000 max. cycles/hr |
阀头部安装六角尺寸 | 3/4 in.19,1 mm |
阀安装扭矩 | 20 - 25 lbf ft27 - 33 Nm |
型号重量 | .35 lb0,15 kg |
Seal kit - Cartridge | Buna: 990162007 |
Seal kit - Cartridge | Viton: 990162006 |
All flow is blocked, hence the term priority. The priority flow has to be satisfied.
The valve acts as a 2 port restrictive flow control.
The spring force in our flow controls equates to about 100 psi (7 bar). This is high enough to give the valves acceptable capacity and not too high for proper circuit operation. 100 psi (7 bar) is the spring force; at the upper end of the flow control's range, the drop through the valve will be as high as 250 psi (17 bar) before it starts modulating.
There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
In a meter-in flow control circuit if the pump is set at 3000 psi and the load is 2000 psi the drop through the flow control is 1000 psi. In a meter-out circuit with the load at 2000 psi the drop through the flow control is 2000 psi.
We claim +/- 10%. We set to +/- 5% in production testing to allow for differences in customers' conditions. If you want accuracy, stay in the bottom 2/3rds of the range. Our 12 gpm (45 L/min.) flow controls are quite flat at 9 gpm (34 L/min.) and dead flat below 6 gpm (23 L/min.), until you get to the bottom of the range. Below about .25 gpm (1 L/min.), spool leakage and orifice conditions start to limit accuracy.
I am afraid not. Unless you are overflowing your current valve and correctly size ours, you are not likely to notice any improvement. Priority flow controls are not efficient devices. They are an easy way to get more than 1 source of oil from 1 pump but they can generate a lot of heat. Try to size your actuators so the pressures are similar on both the priority and the bypass circuits. If you can't do that, try to have the lower flow leg be the lower pressure. The pump pressure is determined by whichever leg is higher and if there is flow that is taking a pressure drop that is not doing work it is creating heat.
Yes. All FLeX phase 1 valves are available in the SmartConnect schematic tool, and are also available for submittal to QuickDesign.
- 当选择Sun阀块时,请检查插装阀的间隙要求。不同的阀控制方式以及线圈要求的间隙不一样。
- 在阀的最大尺寸之外需增加额外的2.00 inches (50,8 mm),以进行线圈的安装和移除。
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