Z41H-150LB Cast Steel WCB API Standard Pressure 150LB Flanged Gate Valve

Matters needing attention

The hand wheel, handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited.

Double gate valves shall be installed vertically (i.e. the valve stem is in the vertical position and the handwheel is at the top).

The gate valve with bypass valve shall open the bypass valve before opening (to balance the pressure difference at the inlet and outlet and reduce the opening force).

The gate valve with transmission mechanism shall be installed according to the provisions of the product operation manual.

If the valve is often opened and closed, lubricate it at least once a month.

Introduction

The opening and closing part of the cast steel gate valve is the gate, and the movement direction of the gate is perpendicular to the fluid direction. The gate valve can only be fully opened and closed, not adjusted and throttled. The ram has two sealing surfaces. The most commonly used mode is that the two sealing surfaces of the ram valve form a wedge. The wedge angle varies with the valve parameters, usually 50. When the medium temperature is not high, it is 2 ° 52 '. The gate of wedge gate valve can be made into a whole, which is called rigid gate valve; It can also be made into a ram that can produce slight deformation to improve its manufacturability and make up for the deviation of the angle of the sealing surface in the processing process. This kind of ram is called elastic ram.

Standard