操比视频在线观看_性xxxxxxxxxxx欧美_亚洲精品激情视频_亚洲综合蜜臀av_在线观看免费色_色噜噜狠狠狠狠色综合_成人在线免费高清视频_欧美色图亚洲天堂_女生隐私免费观看_h片在线观看视频免费免费_国产人交视频xxxcom_免费av黄色网址_香蕉久久视频_欧美xxxxxxxxxxxxx_青春草国产免费福利视频一区_11一11sexvideos_japanesehd熟bbw_激情三级hd中文字幕_免费自拍偷拍视频_98av视频_亚洲色图50p_a356铝合金成分_黑白配免费观看_97在线免费观看_欧美men网站_maturetube乱熟_色老头视频综合网站_精品aaa_高潮孕妇videosexfreexxxx_婷婷在线综合

NEWS
products product list

Company news

Current position:HOME / / NEWS / Company news

After the stainless steel valve is installed, it should be checked regularly

Release time:2020-05-09 Author: Source:

After the stainless steel valve is installed, it should be checked regularly

The stainless steel valve should be stored in a dry and ventilated room, and both ends of the passage must be blocked. Valves stored for a long period of time should be regularly checked to remove dirt, pneumatic valves and anti-rust oil on the processing surface.

In addition, after the pneumatic valve is installed, it should be regularly inspected, the main inspection items:

(1) Wear condition of sealing surface;

(2) Trapezoidal thread wear of the stem and stem nut;

(3) Whether the packing is out-of-date, if it is damaged, it should be replaced in time;

(4) After the valve is repaired and assembled, a sealing performance test should be carried out.

Previous:Check the following points during the installation of the check valve

Next:The selection and operation of welding electrodes in gate valve industry

太保市| 合江县| 松桃| 绍兴县| 牡丹江市| 丁青县| 江山市| 庆城县| 县级市| 兰州市| 蓝山县| 光山县| 澄迈县| 宝清县| 福安市| 比如县| 恭城| 邵武市| 法库县| 海林市| 云阳县| 称多县| 安顺市| 威海市| 锦州市| 安福县| 吴桥县| 潜山县| 沾益县| 剑川县| 宜阳县| 社旗县| 资源县| 同江市| 滦平县| 阳春市| 红河县| 珠海市| 西乌| 双流县| 含山县|