固定节流口,旁路/节流,优先,流量控制阀

流量: 12 gpm45 L/min. | 插孔: T-2A
FRDA : 固定节流口,旁路/节流,优先,流量控制阀
技术特性 [ + ]

旁通/节流,固定节流口,优先流量控制阀接受口1的输入流量,并用来满足口3的优先流量。如果输入流量超出优先流量需求,多余的流量经口2旁通流出。旁通流量可用于次级油路。

  • 客户必须指定一个流量等级。出厂流量设定值在指定设定值的+/- 10%范围内。
  • 口3处的最大压力应降限制在3000 psi (210 bar)以内。
  • Cartridges with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
  • 优先流量和旁路流量在系统压力范围内保持稳定。
  • 不管输入流量如何变化,优先流量保持稳定。
  • 在满足优先流量之前,无法使用旁路流量。
  • 旁通口(口2)压力可以超出优先口(口3)压力。
  • 锐边节流口设计可有效减少因粘度变化引起的流量波动。
  • 可调控制选项可以使阀在出厂预设流量的+/- 25%范围内调节。可对调节螺杆进行+/- 3圈调整。旋进(顺时针)螺杆可增加流量。
  • 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。
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-2A
系列 2
通流能力 12 gpm45 L/min.
最大操作压力 5000 psi350 bar
最大输入流量 30 gpm120 L/min.
阀头部安装六角尺寸 1 1/8 in.28,6 mm
阀安装扭矩 45 - 50 lbf ft61 - 68 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 .40 lb0,20 kg
Seal kit - Cartridge Buna: 990202007
Seal kit - Cartridge EPDM: 990202014
Seal kit - Cartridge Polyurethane: 990002002
Seal kit - Cartridge Viton: 990202006
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.
备注 [ + ]
  • 对于采用O控制(旋钮调节,带面板锁)的系列1插装阀,面板上需要留一个直径0.75 in. (19 mm)的孔。
额外来源 [ + ]