固定节流口 压力补偿 流量控制阀 带逆流单向阀

流量: 50 gpm200 L/min. | 插孔: T-18A
FCFB : 固定节流口 压力补偿 流量控制阀 带逆流单向阀
技术特性 [ + ]

在压力波动较大的进口节流或者出口节流的应用中,固定节流口、带逆流单向阀、压力补偿的流量控制阀提供精确的流量控制。集成的大流量单向阀提供口2到口1的自由液流。流量设定为用户指定并在出厂前设定。

  • 顾客必须设定流量等级。工厂设定值精度为顾客要求值的±10%之内。
  • 调节式可提供±20%的工厂设定流量调节。顺时针调节流量上升。
  • 所有的2口流量控制阀在形状上和功能上都可以相互替换(例如对于一个给定结构下的相同的流道,相同的孔型)。但是,阀安装部分的外部尺寸将会相应不同。
  • 锐边小孔的设计可以最大化地减小粘度对于流量变化的影响。
  • 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
技术数据 [ + ]
注意:技术参数可能因产品配置而不同。请查看产品配置部分。
插孔 T-18A
系列 4
通流能力 50 gpm200 L/min.
最大操作压力 5000 psi350 bar
阀头部安装六角尺寸 1 5/8 in.41,3 mm
阀安装扭矩 350 - 375 lbf ft474 - 508 Nm
调节螺栓的内六角尺寸 5/32 in.4 mm
Locknut Hex Size 9/16 in.15 mm
Locknut Torque 80 - 90 lbf in.9 - 10 Nm
型号重量 1.00 lb0,45 kg
Seal kit - Cartridge Buna: 990018007
Seal kit - Cartridge Polyurethane: 990018002
Seal kit - Cartridge Viton: 990018006
性能曲线 [ + ]
常见问题 [ + ]

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 (not really) 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.

Only external seals are serviceable.  Sun offers replacement seal kits for all cartridge models. The applicable kit part number can be found in the product page's Technical Data table or by using our Cartridge Seal Kit search function located under Accessories. Please note: Converting the external seals from one material to another does not ensure fluid compatibility with that material due to the existence of internal seals within the cartridge.
额外来源 [ + ]