2通, 直动式 电比例, 压力补偿 流量控制阀 带反向单向阀
常闭式,电比例调速阀,带有反向单向阀。该阀在压力波动剧烈的进油节流或回油节流回路中提供精确的流量调节功能。流量可以按比例从几乎为0调节到最大流量。集成的大流量反向单向阀允许油液从2口到1口自由流动。
- 疲劳以及爆破压力等级符合新的NFPA测试标准T2.6.1 R2014。
- 使用CFD流体仿真软件进行几何形状优化设计。
- 该类阀的所有配置均配备锌-镍镀层,能够提供1000小时盐雾保护。
- 线圈插头提供最高IP69K防护等级,详细信息见线圈产品页。
- 该阀可以使用FLeX高功率或者防爆线圈。
- 设计以及测试通过500万次开关工作循环。
- 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。颤振调节范围80 - 250 Hz。
- 该阀与SUN的可扩展移动控制器XMD完全匹配。
- 不同的线圈接头与电压选项都是可选的,也同时可选带或不带浪涌保护。
- 线圈可以双向安装到螺线管上。
滞环(在颤振作用下) | B-spool: 10%, C-spool: 9%B-spool: 10%, C-spool: 9% |
线性度(在颤振作用下) | 3%3% |
重复精度(带颤振) | 1.5%1.5% |
推荐颤振频率 | 100 Hz100 Hz |
名义死区(一定的输出) | B-spool: 35%, C-spool: 35%B-spool: 35%, C-spool: 35% |
插孔 | T-16A |
系列 | 3 |
通流能力 | 30 gpm120 L/min. |
最大操作压力 | 5000 psi350 bar |
粘度范围 | 35 - 2000 SUS2,8 - 380 cSt |
额定响应时间 | 50 ms50 ms |
切换频率 | 3,600 max. cycles/hr3,600 max. cycles/hr |
衔铁直径 | .63 in.16 mm |
阀头部安装六角尺寸 | 1 1/4 in.31,8 mm |
阀安装扭矩 | 150 - 160 lbf ft203 - 217 Nm |
型号重量 | 1.20 lb0,55 kg |
Seal and nut kit - Coil | Viton: 990740006 |
Seal kit - Cartridge | Buna: 990016007 |
Seal kit - Cartridge | Viton: 990016006 |
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.
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.
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