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進口高溫截止閥德國洛克品牌精工細作

進口高溫截止閥結構特點：

1、大閥瓣、小閥瓣分別與閥體中腔及大閥瓣內孔間隙配合，方便導向。。可以避免在高壓差下閥門啟閉時，閥瓣被流體推向一側，導致閥瓣與閥座密封失效，也可避免在*條件下，閥桿彎曲。同時閥瓣在閥體內導向，可保持閥瓣密封面和閥座的同軸度。由于利用了導向的功能，閥體與閥瓣的間隙較大，使閥瓣升降靈活無卡阻。

2、由于閥門開啟時小閥瓣先開啟，降低了閥門的開啟力矩，既降低了錐齒輪傳動裝置的力矩，減少了傳動裝置的成本，又減小密封面的磨損。

3、在閥體中腔與自密封填料接觸處堆焊Stellite合金，防止在高溫及自密封填料強烈腐蝕下，造成閥體中腔內壁磨損，可有效的保證中腔的密封。

4、閥桿密封采用柔性石墨編織填料和柔性石墨環，其中首圈和底圈采用柔性石墨編織填料，中問圈填料采用柔性石墨環，以防止石墨受壓后擠入閥體中腔。在填料安裝時，應對填料逐個預壓，以維持填料良好的密封性。

5、閥桿與立柱之問加裝導向塊，保證閥桿只作升降運行不做旋轉轉動，減小對填料的磨損，保證填料的密封性能。

Structural features of imported high temperature stop valve:

1. The large disc and small disc are matched with the clearance of the middle chamber of the valve body and the inner hole of the large disc respectively, which is convenient for guiding.. When the valve is opened and closed under high pressure difference, the valve disc is pushed to one side by the fluid, resulting in the sealing failure between the valve disc and the valve seat, and the bending of the valve stem under the condition of *. At the same time, the valve disc guides in the valve body, which can maintain the coaxiality of the sealing surface of the valve disc and the valve seat. Due to the use of the guiding function, the gap between the valve body and the valve disc is large, so that the valve disc can be lifted and lowered flexibly without jamming.

2. Since the small valve disc opens first when the valve is opened, the opening torque of the valve is reduced, which not only reduces the torque of the bevel gear transmission device, but also reduces the cost of the transmission device, and reduces the wear of the sealing surface.

3. Stellite alloy is overlaid at the contact between the middle chamber of the valve body and the self sealing packing to prevent the wear of the inner wall of the middle chamber of the valve body under high temperature and strong corrosion of the self sealing packing, which can effectively ensure the sealing of the middle chamber.

4. The valve stem seal adopts flexible graphite braided packing and flexible graphite ring, of which the first ring and bottom ring are made of flexible graphite braided packing, and the middle ring packing is made of flexible graphite ring, so as to prevent the graphite from squeezing into the valve body cavity after being pressed. During the packing installation, the packing should be preloaded one by one to maintain the good sealing performance of the packing.

5. A guide block is installed between the valve stem and the column to ensure that the valve rod only operates up and down without rotation, so as to reduce the wear of the packing and ensure the sealing performance of the packing.

進口高溫截止閥規格參數：

A、尺寸范圍:DN50~600

B、壓力范圍:ANSI 900~2500LB

C、適用溫度:-46~650℃

D、閥體材質:A105,LF2,F1,F12,F22,F91,F316

E、閥瓣材質:A105,LF2,F1,F12,F22,F91,F316

F、閥桿材質:F6,F316

G、閥座材質:F6,Slite

進口高溫截止閥工作原理：

高溫截止閥一旦處于開啟狀態，它的閥座和閥瓣密封面之間就不再有接觸，因而它的密封面機械磨損較小，由于大部分截止閥的閥座和閥瓣比較容易修理或更換密封元件時無需把整個閥門從管線上拆下來，這對于閥門和管線焊接成一體的場合是很適用的。介質通過此類閥門時的流動方向發生了變化，因此截止閥的流動阻力較高于其它閥門。

進口高溫截止閥產品簡介：

進口高溫截止閥的啟閉件是塞形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運動。閥桿的運動形式，（通yong名稱：暗桿），也有升降旋轉桿式，（通yong名稱：明桿）截止閥是指關閉件（閥瓣）沿閥座中心線移動的閥門。 根據閥瓣的這種移動形式，閥座通口的變化是與閥瓣行程成正比例關系。由于該類閥門的閥桿開啟或關閉行程相對較短，而且具有非常可靠的切斷功能，又由于閥座通口的變化與閥瓣的行程成正比例關系，非常適合于對流量的調節。因此，這種類型的閥門非常適合作為切斷或調節以及節流用。

進口高溫截止閥訂貨須知：

A、若訂貨前還未選定型號，請向我們提供您的使用參數:

1.公稱通徑 2.產品型號 3.流體性質（包括公稱壓力、溫度、介質） 4.閥體、密封材料 5.連接方式

B、若已經由設計單位選定我公司的產品型號，請按型號直接向我司銷售部訂購

C、當使用的場合非常重要或管路比較復雜時，請您盡量提供設計圖紙和詳細參

數，由我們德國洛克閥門技術員為您審核把關。

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