結(jié)構(gòu)材料：

由紅閥發(fā)明并推出的氣動A型管夾閥為流體控制問題提供了一個獨(dú)特且性價比高的解決方案。在全球范圍內(nèi)，正在使用的紅閥A型管夾閥數(shù)量超過了其他任何管夾閥，其秘密在于橡膠套管-管夾閥的唯一過流零件。閥門的驅(qū)動或夾緊動作，由作用在套管上的帶壓空氣和液體完成。閥體作為一個內(nèi)置的驅(qū)動裝置，省去了昂貴的氣動/液動/電動執(zhí)行器。通過控制閥體和套管間的環(huán)形空間里的空氣壓力，我們可以開關(guān)或調(diào)解閥門。氣源壓力大約高于管線壓力35psi,就可以使閥門關(guān)閉。

套管的彈性允許閥門在有殘存顆粒時零泄漏關(guān)閉，避免了損壞閥門，密封區(qū)域相當(dāng)于95%的閥門長度。沒有閥座、密封填料需要更換，沒有間隙和死角會滯留防礙閥門操作的碎塊。A型管夾閥的抗磨損能力是無與倫比的，當(dāng)閥門全開時，它就像管線中的一段管子一樣。A型管夾閥用于不易到達(dá)的位置或環(huán)境惡劣中，因?yàn)殚y門沒有外部聯(lián)結(jié)、手柄、活塞或旋轉(zhuǎn)部件，從而不會因此帶來故障停機(jī)。

控制：
　　使用一個升壓器或比例繼電器來調(diào)節(jié)A型管夾閥的空氣壓力，可以完全調(diào)流控制。通過改變比例繼電器的信號氣壓也可調(diào)節(jié)A型管夾閥。

A型管夾閥的加厚套管：
　　針對高磨損工況設(shè)計，用于磨蝕性泥漿時，A型加厚套管管夾閥的使用壽命甚至優(yōu)于斯太萊硬質(zhì)合金V型球閥和其它金屬密封閥門。為了補(bǔ)償額外的套管厚度帶來的流道縮小，閥體規(guī)格必須增大至下一個口徑。

A型錐形套管管夾閥：
　　A型錐形套管管夾閥專為節(jié)流控制應(yīng)用而設(shè)計，通過縮小套管中央的流道直徑，閥門的Cv值可以滿足任何要求，為了提高耐磨能力，流道下游，套管的后半部分，流道都是縮小的。而且，壓力恢復(fù)發(fā)生在閥門的下游，氣蝕也被降至最低。

l      Zero leakage close even there is remaining particles

l      Full bore, thickening or tapered bushing type

l      Simple design, not influenced by harsh external environment

l      Body bears the functionality of inside drive device

l      There is no need to change or maintain seal parts at any time

l      There are no gaps and blind angles to prevent valve operation

l      Body: cast iron or aluminum

l      Casing: natural rubber, neoprene, Hypalon, chloride, butyl rubber, nitrile rubber, EPDM and Viton

l      Flange: ANSI125/150, 250/300 pound class

l      The pneumatic type A pipe clamp valve that is invented and launched by Red Valve it provides a unique and cost-effective solution for flow controlling problem. On a global scale, the quantity of type A pipe clamp valves is more than any other pipe clamp valve, the secret is the only over-flow parts in the rubber casing pipe clamp valve. Valve’s drive or clamping is realized by compressed air and liquid which act on the casing pipe. It eliminates the need for expensive pneumatic/hydraulic/electric actuator as the body is as a built-in drive device. By controlling the air pressure in the annular space between valve body and casing pipe, we can switch or adjust valve. The valve can be closed if the air supply pressure is 35 psi higher than the pipeline.

l      The casing pipe elasticity allows the zero leakage close even when there is remaining particles, in this way the valve can avoid being damaged. The sealing region is equivalent to 95% of the length of valve. There is no need for seat and seal filler to be replaced, there are no gaps and blind angles to prevent valve operation. Type a pipe clamp valve’s wear resistance is unmatched, when the valve is fully open, it’s like a section of pipe in the pipeline. Type A pipe clamp valve is used in the position of uneasy to reach or harsh environment, it will not cause stoppage because there is no external links, valve handle, piston or rotating parts in the valve.