H44H-300LB Cast Steel 300LB Pressure API Flanged Swing Check Valve

Introduction

Swing check valve, also known as one-way valve or check valve, is used to prevent the backflow of medium in the pipeline. The valve whose opening and closing parts open or close automatically by medium flow and force to prevent medium backflow is called check valve. The check valve is an automatic valve, which is mainly used on the pipeline with one-way flow of medium. The medium is only allowed to flow in one direction to prevent accidents. The valve shall be installed in the general horizontal pipeline

Usage:

Swing check valve is applicable to nominal pressure PN1 0MPa~42.0MPa,Class150-2500； Nominal diameter DN15 ~ 1200mm, nps1 / 2 ~ 48; On various pipelines with working temperature of - 196 ~ 540 ℃, it is used to prevent medium backflow. By selecting different materials (WCB, CF8 (m), CF3 (m), 1gr5mo, 15crmo1v, it can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium, urea and other media. It is mainly used in petroleum, chemical, pharmaceutical, chemical fertilizer, electric power and other pipelines

structure:

The swing check valve adopts the built-in rocker swing structure. All the opening and closing parts of the valve are installed inside the valve body and do not penetrate the valve body. Except for the sealing gasket and sealing ring used at the middle flange, there are no external leakage points as a whole, so as to eliminate the possibility of valve leakage. The connection of swing check valve rocker arm and valve disc adopts spherical connection structure, so that the valve disc has a certain degree of freedom within 360 degrees and has appropriate micro position compensation

Main part and materials