進(jìn)口止回閥德國洛克品牌品質(zhì)保證

一、進(jìn)口止回閥描述：

德國LOCKE洛克進(jìn)口止回閥其作用是防止管路中的介質(zhì)倒流。啟閉件靠介質(zhì)流動的力量自行開啟或關(guān)閉，止回閥屬于自動閥類，主要用于介質(zhì)單向流動的管道上，只允許介質(zhì)向一個方向流動，防止介質(zhì)倒流以免止發(fā)生事故。

The purpose of Locke lock check valve is to prevent the backflow of medium in the pipeline. The opening and closing parts are opened or closed by the force of medium flow. The check valve belongs to the automatic valve type. It is mainly used on the pipeline with unidirectional flow of medium. It only allows the medium to flow in one direction to prevent the medium from flowing back to prevent accidents.

二、進(jìn)口止回閥技術(shù)參數(shù)：

公稱通徑：DN10-DN600

公稱壓力：PN1.0-PN32.0Mpa或者ANSI150LB-2500LB

使用溫度：-196℃～+550℃（用于低溫介質(zhì)時可選低溫止回閥）

閥體材質(zhì)：鑄鐵、鑄鋼、不銹鋼

閥芯材質(zhì)：不銹鋼、鑄鋼等

連接方式：法蘭、螺紋、焊接、卡套式、對夾式等

Nominal diameter: dn10-dn600

Nominal pressure: pn1.0-pn32.0mpa or ansi150lb-2500lb

Service temperature: - 196 ℃ ~ + 550 ℃ (low temperature check valve is optional for low temperature medium)

Valve body material: cast iron, cast steel, stainless steel

Valve core material: stainless steel, cast steel, etc

Connection mode: flange, thread, welding, ferrule type, wafer type, etc

三、進(jìn)口止回閥優(yōu)點(diǎn)：

1.采用內(nèi)裝搖臂旋啟式結(jié)構(gòu),所有啟閉件都裝于閥體內(nèi)部,不穿透閥體

2.搖臂和閥瓣連接處采用球面連接的結(jié)構(gòu),使得閥瓣在360°范圍內(nèi)有一定的自由度,有適當(dāng)?shù)奈⒘课恢醚a(bǔ)償

3.閥門密封副的密封面堆焊合金鋼或硬質(zhì)合金,即使用在有細(xì)粒的介質(zhì)中亦不會因沖蝕而很快磨損

4.用于較高壓力閥門的閥體與閥蓋的連接采用壓力自緊式密封結(jié)構(gòu),楔形密封環(huán)與四開環(huán)組合,壓力越高密封越可靠

1. The internal swing arm structure is adopted, and all the opening and closing parts are installed inside the valve body without penetrating the valve body

2. The connection between the rocker arm and the valve disc adopts a spherical connection structure, so that the valve disc has a certain degree of freedom within the 360 ° range, with appropriate micro position compensation

3. The sealing surface of the valve sealing pair is stacked with welding alloy steel or hard alloy, which will not wear out quickly due to erosion even if it is used in the medium with fine particles

4. The connection between the valve body and the valve cover for the valve with higher pressure adopts the pressure self tightening sealing structure. The wedge-shaped sealing ring is combined with the four open rings, and the higher the pressure, the more reliable the sealing is

四、進(jìn)口止回閥根據(jù)其結(jié)構(gòu)可分為：

A、升降式止回閥：閥瓣沿著閥體垂直中心線上下滑動的止回閥，結(jié)構(gòu)形式類似于截止閥，升降式止回閥只能安裝在水平管道上（所以也稱臥式止回閥），在高壓小口徑止回閥上閥瓣可采用圓球。

B、旋啟式止回閥：閥瓣圍繞閥座外的銷軸左右旋轉(zhuǎn)的止回閥，旋啟式止回閥應(yīng)用較為普遍。

C、碟式止回閥：閥瓣圍繞閥座內(nèi)的銷軸旋轉(zhuǎn)的止回閥。碟式止回閥結(jié)構(gòu)簡單，只能安裝在水平管道上。

A. Lifting check valve: the check valve with the disc sliding down and along the vertical center line of the valve body. Its structure is similar to that of the stop valve. The lifting check valve can only be installed on the horizontal pipeline (so it is also called horizontal check valve). The disc of the high-pressure small diameter check valve can use the ball.

B. Swing check valve: the check valve whose disc rotates around the pin outside the valve seat. Swing check valve is widely used.

C. Disc check valve: a check valve in which the disc rotates around the pin in the seat. The disc check valve has a simple structure and can only be installed on the horizontal pipeline.