色黄乱淫有声小说 I 狠狠色丁香婷婷久久 I av噜噜噜 I 美女被c视频网站 I porn国产 I 精品日韩成人av I 亚洲伊人一本大道中文字幕 I 婷婷色五 I 2019中文字幕第三页 I 欧美极品美女视频网站在线观看免费 I а√天堂中文官网在线8 I 成人在线三级视频 I 三级影片在线观看欧美日韩一区二区 I 久久精品女人天堂avapp下载 I 久久久国产精品网站 I 狠狠色丁香婷婷综合视频 I 黄色抖音短视频 I 伊人久久精品久久亚洲一区 I 九色精品在线 I 久久人人看视频 I 国产精品99久久久久久夜夜嗨 I 少妇玉梅销魂呻吟 I 欧美日韩手机在线视频 I 亚洲成年人网址 I 亚洲三级久久 I 一级黄色软件 I 欧美高清v I 国产精品极品美女观看免费 I 色激情小说 I 中文天堂av I 国产精品久久久久7777婷婷 I freesexvideos高潮 I 国内精品久久久久久久影视红豆 I 美女坐爱视频 I 99亚洲精品在线

Emergency shut-off valve

Dateline:2014-11-30    Hits:

A, use and performance specification:

This valve is a safety protective valve, installed in the liquefied petroleum gas (gas),liquid and gas pipeline, and supporting the use of long distance gas source, the use of gas control valve open close, so that occurs in a pipe or tank large leak even when the fire started, the fast manual so that the gas source pressure relief, or high temperature is greater than or equal to 75%%p5C%%D when the fusible alloy melts,while the cylinder automatic pressure relief, rapid closure of the valve and the leakage stopping, play the role of security protection.

The working principle, control two

The valve air entrance installed by a two position three way electromagnetic valve,electrical appliances using a remote console control valve switch.

1 gas leak alarm alarm energized, solenoid valve exhaust, the valve is automatically closed.

2 manual control solenoid valve (press the red clip) exhaust, the valve is automatically closed.

Three: the main performance specifications

The pressure cylinder working pressure rating of 2.5/4.0Mpa is less than or equal to 2.0Mpa

Using the temperature of -40~+80 DEG C cylinder using the medium nitrogen ` dry air

Using the medium of natural gas, liquefied gas, the closing time of plus or minus 70 DEG C melting

Closing time less than 5 seconds to open the cylinder pressure is greater than or equal to 0.5-0.7Mpa

Four main parts: material

Parts name material

The valve body valve cover of carbon steels

Cylinder, piston nodular cast iron

O type sealing ring, Sichuan PTFE, NBR

Spring 50CrVA (Dan Huanggang)

Pneumatic emergency cut off valve installation size

The maximum flow DN-JIS L: L / Max.FIoW/min

Mm in

251 "160160

32 1-1/4 "200400

40 1-1/2 "200400

502 "240640

803 "2831600

1004 "3052500

1506 "4033300

2008 "5025900


手機網站