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進口不銹鋼止回閥德國洛克廠家直銷

進口不銹鋼止回閥結構特點：

1.流體阻力小

2.動作可靠

3.減少水錘壓力

4.可適用大中小口徑管路上

5.可水平、立式安裝

6.有彈性,密封性能好

適用介質: 水、油品、蒸汽、氣體、酸類等

進口不銹鋼止回閥形式種類：

止回閥按結構劃分，可分為升降式止回閥、旋啟式止回閥和蝶式止回閥三種。升降式止回閥可分為立式和臥式兩種。旋啟式止回閥分為單瓣式、雙瓣式和多瓣式三種。蝶式止回閥為直通式、以上幾種止回閥在連接形式上可分為螺紋連接、法蘭連接和焊接三種。

1、升降式止回閥的結構一般與截止閥相似，其閥瓣沿著通道中以線作升降運動，動作可靠，但流體阻力較大，適用于輕小口徑的場合。升降式止回閥可直通式和立式兩種。直通式升降止回閥一般只能安裝在水平管路，而立式升降止回閥一般就安裝在垂直管路。

2、旋啟式止回閥的閥瓣繞轉軸作旋轉運動。其流體阻力一般小于升降式止回閥，它適用于較大口徑的場合。旋啟式止回閥根據(jù)閥瓣的數(shù)目可分為單瓣旋啟式、雙瓣旋啟式及多瓣旋啟式三種。單瓣旋啟式止回閥一般適用于中等口徑的場合。大口徑管路選用單瓣旋啟式止回閥時，為減少水錘壓力，*采用能減小水錘壓力的緩閉止回閥。雙瓣旋啟式止回閥適用于大中口徑管路。對夾雙瓣旋啟式止回閥結構小、重量輕，是一種發(fā)展較快的止回閥；多瓣旋啟式止回閥適用于大口徑管路。

3、隔膜式止回閥有多種結構形式，均采用隔膜作為啟閉件，由于其防水錘性能好，結構簡單，成本低，近年來發(fā)展較快。但隔膜式止回閥的使用溫度和壓力受到隔膜材料的限制。

4、球型污水止回閥：閥體采用全通道結構，具有流量大、阻力小之優(yōu)點。采用圓球做閥瓣，適用于高粘度、有懸浮物的工業(yè)及生活污水管網(wǎng)

5、蝶式止回閥的結構類似于蝶閥。其結構簡單、流阻較小，水錘壓力亦較小。

進口不銹鋼止回閥描述：

德國《DE LOCKE》洛克進口不銹鋼止回閥啟閉件靠介質流動和力量自行開啟或關閉，以防止介質倒流的閥門叫止回閥。止回閥屬于自動閥類，主要用于介質單向流動的管道上，只允許介質向一個方向流動，以防止發(fā)生事故。止回閥又稱單向閥或逆止閥，水泵吸水關的底閥也屬于止回閥類。止回閥是能自動阻止流體倒流的閥門。止回閥的閥瓣在流體壓力作用下開啟，流體從進口側流向出口側。當進口側壓力低于出口側時，閥瓣在流體壓差、本身重力等因素作用下自動關閉以防止流體倒流。止回閥關閉時，會在管路中產(chǎn)生水錘壓力，嚴重時會導致閥門、管路或設備的損壞，尤其對于大口管路或高壓管路，故應引起止回閥選用者的高度注意。在管線中不要使止回閥承受重量，大型的止回閥應獨立支撐，使之不受管系產(chǎn)生的壓力的影響。安裝時注意介質流動的方向應與閥體所票箭頭方向一致。

Description of imported stainless steel check valve:
German "de Locke" imported stainless steel check valve by the medium flow and force to open or close, in order to prevent the medium backflow of the valve called check valve. Check valve is an automatic valve, which is mainly used in the pipeline with one-way flow of medium. It only allows the medium to flow in one direction to prevent accidents. Check valve is also known as one-way valve or check valve, pump suction off the bottom valve also belongs to check valve class. Check valve is a kind of valve which can automatically prevent the backflow of fluid. The disc of the check valve opens under the action of fluid pressure, and the fluid flows from the inlet side to the outlet side. When the pressure at the inlet side is lower than that at the outlet side, the valve disc will automatically close under the action of fluid pressure difference, gravity and other factors to prevent fluid backflow. When the check valve is closed, it will produce water hammer pressure in the pipeline, and in serious cases, it will cause damage to the valve, pipeline or equipment, especially for the large mouth pipeline or high-pressure pipeline, so the check valve selector should pay attention to it. Don't make the check valve bear the weight in the pipeline, large check valve should be supported independently, so that it is not affected by the pressure generated by the piping system. During installation, pay attention to the direction of medium flow should be consistent with the direction of arrow on the valve body.
 

進口不銹鋼止回閥技術參數(shù)：

公稱通徑：DN15-300mm

公稱壓力：PN1.6-32Mpa

主要零件材料

閥體閥瓣：不銹鋼

導向閥：不銹鋼

密封面：鉻鎳鈦不銹鋼，堆焊硬質合金

Technical parameters of imported stainless steel check valve:
Nominal diameter: DN 15-300 mm
Nominal pressure: pn1.6-32mpa
Material of main parts
Body and disc: stainless steel
Pilot valve: stainless steel
Sealing surface: Cr Ni Ti stainless steel, hardfacing carbide