国产亚洲情侣久久精品|午夜福利高清精品久久|男女羞羞无遮掩视频网站|亚洲 欧美 中文 精品|字幕一区二区久久人妻网站|国产日韩AⅤ精品一区二区|久久九九囯产亚洲精品视频|五月天丁香社区婷婷在线中文字幕

Characteristics and advantages of fixed ball valve

Source:Time:2021/09/14Views:c

Features of fixed ball valve:

1. Double blocking and discharge function: the fixed ball valve adopts spring preloaded floating valve seat. No matter whether the valve is fully open or fully closed, the valve seat on the upstream and downstream sides blocks the fluid, and the residue in the cavity of the valve body is discharged through the discharge valve.

2. Automatic pressure relief function: in case of abnormal pressure rise caused by the temperature rise of the staying medium in the valve body cavity, it does not need to pass through the safety valve, but can automatically relieve the pressure only by the valve seat function, which is very important to ensure the safety of the valve when transporting liquid medium.

3. Fire safety structure: all valves have fire safety function, and their design and manufacture comply with the requirements of api607 and api6fa specifications. Picture of fixed ball valve structure diagram of fixed ball valve picture of fixed ball valve.


Advantages of fixed ball valve:

1. Sealing emergency grease injection rescue: due to the accidental failure of the valve seat seal caused by foreign matters in the medium or fire, the grease injection valve provides a fast connection with the grease injection gun, which can easily and quickly inject the sealing grease into the sealing part of the valve seat to alleviate the leakage.

2. Reliable valve stem seal and low operating torque: in addition to the standard sealing ring, the packing gland is also provided with "O" type sealing ring, and the double seal ensures the reliability of valve stem seal; Additional graphite packing and sealing grease injection minimize valve stem leakage after fire. The valve stem sliding bearing and thrust bearing make the valve easy to operate.

3. Full bore or reduced bore: full bore or reduced bore structure can be selected as required. The flow aperture of the full bore valve is consistent with the inner diameter of the pipeline, which is convenient for pipeline cleaning.

4. Valve stem can be lengthened: the valve stem can be lengthened according to the needs of installation or operation. The extended rod ball valve is especially suitable for urban gas and other occasions where buried pipelines are required. The size of the extended valve stem shall be determined according to the customer's needs.

5. Flexible operation: the valve seat and stem bearing with small friction coefficient and good self lubrication are adopted to greatly reduce the operating torque of the valve. Therefore, the valve can be operated flexibly for a long time even without providing sealing grease.

上林县| 滦平县| 安陆市| 海淀区| 左权县| 霞浦县| 石林| 湾仔区| 资源县| 伊川县| 辰溪县| 迁安市| 潞西市| 郧西县| 晴隆县| 格尔木市| 沁源县| 秀山| 定州市| 大关县| 浦东新区| 南溪县| 宿迁市| 精河县| 波密县| 尼勒克县| 桂平市| 崇阳县| 寻乌县| 昌吉市| 鹤山市| 金湖县| 独山县| 蒙城县| 和平区| 临武县| 高雄县| 林口县| 邳州市| 甘德县| 额尔古纳市|