The use of Z45X non rising stem elastic soft sealing gate valve and non rising stem gate valve:

　　1.The opening and closing direction of the non rising stem gate valve during operation should always be clockwise.

　　2.For the convenience of one person's opening and closing operation,the maximum opening and closing torque should be 240N-m under pipeline pressure conditions.

　　3.Due to the frequent manual opening and closing of pneumatic valves in the pipeline network,the number of opening and closing revolutions should not be too large,even for large diameter valves,it should be within 200-600 revolutions.

　　4.If the concealed gate valve is buried deep and the operating mechanism and display panel are≥1.5m above the ground,an extension rod facility should be installed and firmly fixed to facilitate observation and operation from the ground.That is to say,the valve opening and closing operation in the pipeline network is not suitable for downhole operations.

　　5.The opening and closing operating end of the non rising stem gate valve should be square tenon,standardized in size,and facing the ground,so that people can operate directly from the ground.Valves with**are not suitable for underground pipeline networks.

　　General requirements for non rising stem gate valves:

　　1.The manufacturing standard for non rising stem gate valves should specify the national standard number based on which they are manufactured.If it is an enterprise standard,the procurement contract should be accompanied by the enterprise document.This type of valve should generally be installed horizontally in pipelines.

　　2.The model of the non rising stem gate valve should indicate the national standard number requirements based on.If it is a corporate standard,the relevant description of the model should be indicated.

　　3.The specifications and categories of non rising stem gate valves should comply with the requirements of the pipeline design documents.

　　4.The working pressure of the non rising stem gate valve is required to be≥the working pressure of the pipeline.Without affecting the price,the working pressure that the valve can withstand should be greater than the actual working pressure of the pipeline;Either side of the non rising stem gate valve should be able to withstand 1.1 times the valve working pressure without leakage when closed;When the valve is open,the valve body should be able to withstand the requirement of twice the working pressure of the valve.

　　Transportation of Z45X non rising stem elastic soft sealing gate valve:

　　1.Large diameter valves also come with simple wooden frame solid packaging to avoid damage during transportation.

　　2.Lightweight blocking plates should be installed on both sides of the valve for sealing.

　　3.Medium and small diameter valves should be bundled with straw ropes and transported in containers.