Common Gate Valve failures and causes

Gate Valve, most Gate Valve installed on the system will not fail. If problems occur, they are generally caused by a lack of engineering or maintenance experience. With the widespread use of this type of valve, people have summarized several causes and solutions for user reference.

1. The Gate Valve is leaking. The reasons for the failure are the following three points. The user needs to make adjustments accordingly:
(1) The contact surface between the valve core and the valve seat is not tight;
(2) There is dirt on the contact surface between the valve core and the valve seat;
(3) The Valve Stem is deflected.
2. The Gate Valve opens when the pressure is not specified. The solution is as follows:
(1) The spring adjustment pressure of the Universal Valve is insufficient, the spring fails or the elastic force is insufficient. The Gate Valve should be readjusted or replaced;
(2) The Universal Valve weight moves forward. The weight should be moved to the original constant pressure position and tightened with the limit screw.
3. The Gate Valve does not open when it reaches the specified pressure. The solution is as follows:
(1) If the valve core and valve seat are stuck, it can be ruled out by manual exhaust test;
(2) The spring adjustment pressure of the Universal Valve is too large and should be readjusted;
(3) When the weight of the Universal Valve moves backward, the weight should be moved to the original constant pressure position and tightened with the limit screw.