The standard procedure for installing forged steel ball valves

1: Preparations before installation

Open the box to check if the model, pressure and diameter match, and confirm that the valve body has no transportation damage. Before installation, the pipeline must be thoroughly purged to remove welding slag, rust and other debris. Prepare the matching gaskets and bolts, and check that the flange sealing surface is in good condition.

2: Installation direction

Bidirectional sealing has no directional requirements. Install those with flow direction arrows as indicated by the arrows.

3: Position the valve

Place the valve between the two flanges of the pipe and ensure that it is not skewed during alignment. Insert the gasket and alternately tighten the flange bolts symmetrically. Gradually increase the force in 2 to 3 steps to prevent the flange from tilting.

4: Debug after installation

Slowly apply pressure to test the sealing performance of each connection point. Conduct a fully open and fully closed operation test to confirm that the torque is normal and the movement is smooth. Adjust the limit to ensure it is fully closed.

Key points to note

Valves must not bear the weight of the pipeline. Large valves need to be independently supported. Welding connections must be operated by certified welders. During welding, the ball should be fully opened to protect the sealing surface. The hexagonal surface of the valve body is clamped by threaded connection. It is strictly prohibited to clamp the valve stem or actuator. The liquid pipeline is first pressurized and slowly opened to prevent impact.

Safety Tips

Release the pressure and empty the pipeline before installation. Reserve a thermal expansion gap under high-temperature working conditions. The wiring in the explosion-proof area complies with the explosion-proof standards.