高精度 分流阀

流量: .6 - 3 gpm2,5 - 12 L/min. | 插孔: T-31A
FSBD : 高精度 分流阀
技术特性 [ + ]

分流阀为滑阀芯,具有压力补偿效果并可将液流以指定比例分流进两个不同支路。此类阀适合以下应用情况:单向液压马达,只需要单方向分流的液压缸和单泵向多油路供油情况。

  • 所有的分流阀和分流/集流阀结构上都是可以相互替换的。(对同样的规格情况下,他们是相同流量路径相同孔型)
  • 根据阀的特性,在分流模式下,较大负载侧分得较大流量。如果把执行器用刚性结构连一起,先动的执行器将会带动后动的一起,从而产生空穴现象。
  • 在多执行器刚性连接结构的使用中,运行误差将最终促使系统锁死。如果机械结构并没有将运行误差考虑进去的话,将会发生损害事故。
  • 在马达回路中,将马达固定一起的刚性结构,以此保证马达同步的结构,无论是路面的车轮还是输送机链轮,都会产生空穴,锁定或者压力激增的现象。
  • 速度的变化以及锁死可能原因有:马达动作的不一致,马达泄漏,轮胎直径的变化以及轮胎和地面摩擦力。
  • 这款阀只是作为分流阀使用;任何想通过此阀实现回流的应用都是不建议的。
  • 不同分流比的分流阀中,较大流量的支路为4口
  • 当流量低于最小流量时,将没有足够的流量使得阀内部进行调节。这时实际作用就是一三通。如果流量从0开始上升,直到最小流量等级时,才会有分流控制作用显现。
  • 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-31A
系列 1
通流能力 .6 - 3 gpm2,5 - 12 L/min.
最大操作压力 5000 psi350 bar
最小流量输入下的分流精度 ±4.5%±4.5%
最大流量输入下的分流精度 ±2.5%±2.5%
最小输入流量情况下的压降 30 psi2 bar
最大输入流量情况下的压降 250 psi18 bar
流量分配比50/50 .6 - 3 gpm2,5 - 12 L/min.
流量分配比40/60 .5 - 2.5 gpm2,8 - 9,5 L/min.
流量分配比33/67 .45 - 2.2 gpm1,7 - 8,5 L/min.
阀头部安装六角尺寸 7/8 in.22,2 mm
阀安装扭矩 30 - 35 lbf ft41 - 47 Nm
型号重量 .60 lb0,30 kg
Seal kit - Cartridge Buna: 990031007
Seal kit - Cartridge Polyurethane: 990031002
Seal kit - Cartridge Viton: 990031006
性能曲线 [ + ]
常见问题 [ + ]

The divider/combiner is an FSDH XAN. Input flow is 15 gpm (57 L/min.). This example depicts orifices that slip about 3 gpm (12 L/min.) at 3000 psi (210 bar) pressure differential between legs. The slip conditions between the 2 examples are the same...please be assured of this. Each orifice on the right is twice the area of the orifice on the left.

FAQ 2 slip orifices
The pressure drop through the left example is 200 psi (14 bar), the drop through the right example is 130 psi (9 bar).

Absolutely not. The bell curve does not apply here. In the dividing mode the high pressure leg gets the higher flow and in the combining mode the high pressure leg is the lower flow......every time. The inaccuracies are always there and they accumulate. The high pressure leg goes up farther and comes down less, every time.

With a typical steered axle application the outside wheels go 15% to 20% farther than the inside wheels. As to how big your slip orifices need to be, there is no correct answer and you are the one that needs to make the compromise. If they are too big you will not have the traction you need at low speeds and if they are too small you will not be able to turn at higher speeds.

There are exactly 250 Sun drops in a cubic inch or 15 in a cc.

It is a static error correction feature. When any one of the 3 ports of a divider/combiner with the synchronizing feature is blocked, flow is possible between the other 2 ports. This "synchronizing" flow is called out in the performance chart and is pressure compensated.

When the leading actuator comes to a stop, the other actuator can catch up at a rate determined by the "synchronizing" flow.

When the actuators are stopped mid-stroke (port 3 blocked), oil can flow from the high pressure leg to the low pressure leg at a rate determined by the "synchronizing" flow.

The "synchronizing" flow does not exist until one port is blocked.

The "synchronizing" feature is most effective on applications where the actuators bottom out at at least one end of their strokes.

No. Synchronizing 2 cylinders hydraulically is a real problem. A real problem is one which has no solution. Our valves with the synchronizing feature don't synchronize, they provide an error correction at each end of the stroke when the leading cylinder bottoms out. Another means of error correction is cross-port reliefs.

We test every cartridge in 16 modes. High pressure, low pressure, high flow, low flow, divide, and combine.....both legs. What you are probably seeing is the error that occurs as the flow is ramping up to the minimum rated flow. Below the minimum rated flow the valve does not see enough flow to operate correctly.

We eliminated the hooks. We have a 1 piece spool.

It is another name for what we call a priority flow control. We don't call it a divider because it doesn't start dividing until there is enough flow to satisfy the priority flow.

No. Almost all of the error percentage we publish is due to flow forces. Even with a mechanically perfect valve you would see most of the variation.

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 [ + ]