1. Valve stem corrosion and protection
Main causes of valve stem corrosion:
The corrosion damage of the valve body is mainly caused by the corrosive medium, and the valve stem corrosion problem is mainly the packing.
At 13:00 today, with the issuance of gas production instructions, the production valve of Nanpu No. 1 gas storage well of Jidong Oilfield Branch of petrochina Co., LTD.,
At 15:58 on November 12, with the opening of the last valve room No. 2 of Qinggao Line (Qing1 gas collection Station to Gaoshawo), natural gas in Ningqing block of Yumen Oilfield
Fixed shaft ball valve is commonly used on natural gas pipelines, and its general inspection method is: turn the valve to the fully open or fully closed position
Since the beginning of this year, Tuha Oilfield has established a "highway" for shale oil, tight oil and other reservoirs through various fracturing methods,
1. Inspection of appearance and logo
Check content: whether the appearance of the valve has defects, such as cracks, bubbles, dents, etc. Check signage, nameplate and finish for compliance.
Ball valve has many kinds of structure, but basically the same little difference, are the opening and closing parts for the round ball core, mainly by the valve seat, ball, sealing ring
On August 22, the oil and gas produced by the oil Wells under the supervision of Wangxuzhuang Oilfield in Dagang was directly transported to the joint station
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