Rising Stem Fire Flange End Gate Valve 1.6 Mpa Fire Protection Valves

Introduction

The rising stem soft seal gate valve is an industrial valve. The opening and closing part of the soft seal gate valve is a ram. The movement direction of the ram is perpendicular to the fluid direction. The gate valve can only be fully opened and fully 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, and the wedge angle varies with the valve parameters, usually 50

Soft seal gate valves are divided into rising stem soft seal gate valves and Non rising stem soft seal gate valves. The main domestic manufacturers include Beijing jiast Valve Co., Ltd., which usually has trapezoidal threads on the lifting rod. Through the nut in the middle of the ram and the guide groove on the valve body, the rotating motion is changed into linear motion, that is, the operating torque is changed into operating thrust. When the valve is opened, when the lifting height of the ram is equal to 1:1 times the valve diameter, the fluid channel is completely unblocked, but this position cannot be monitored during operation. In actual use, the vertex of the valve stem is used as the mark, that is, the position that cannot be opened is used as its fully open position. In order to consider the locking phenomenon caused by temperature change, it is usually opened to the peak position and then turned back 1 / 2-1 turn as the position of fully open valve. Therefore, the full open position of the valve shall be determined according to the position of the RAM (i.e. stroke). This kind of valve shall generally be installed horizontally in the pipeline

Dimension