Working characteristics of stainless steel check valve

Our North Valve Group Co., Ltd. is a manufacturer of standard general industrial valves, such as stainless steel check valves, ball valves, gate valves, butterfly valves and globe valves, with diameters ranging from 10mm to 3000mm and nominal pressure PN ranging from 1Mpa to 80Mpa. At the same time, we can also customize non-standard valves for you. Welcome to call us.

Stainless steel check valves are also called backflow valves, check valves and back pressure valves. Stainless steel check valves are similar to globe valves, except that they allow the disc to move freely up and down. The working characteristics of stainless steel check valve are large load fluctuation and small opening and closing frequency. Once closed or opened, the service cycle is very long, and there is no need to move moving parts. But when the "switch" needs to be repeated, it must be flexible. This requirement is more stringent than typical mechanical operation.

Stainless steel check valve structure and all-metal configuration suitable for current valve setting. Stainless steel check valves are similar to globe valves except that they allow the disc to move freely up and down. Fluid pressure lifts the disc from the sealing surface of the valve seat. The medium returns to the valve seat of the return valve seat and is cut off. According to the applicable conditions, the stainless steel check valve cover can be all-metal structure, or it can be in the form of rubber washer or rubber ring.

This valve is an automatic valve, which is automatically opened and closed by the force generated by the flow of medium in the pipeline. Check valves are divided into lifting check valves, swing check valves and disc check valves.

H14w stainless steel check valve

The working characteristics of stainless steel check valve are large load change and small opening and closing frequency. Once in the closed or open state, it has long service life and does not need the movement of moving parts. However, once "switched", it must be flexible, which is more demanding than ordinary mechanical movements. In most practical applications, the check valve is qualitatively used for quick closing, but at the moment when the check valve is closed, the medium flows in this direction. As the disc closes, the medium rapidly drops from high backflow velocity to zero, while the pressure rises rapidly, which means that the phenomenon of "water hammer" may be harmful to the pipeline system. For the high-pressure pipeline system with multiple pumps in parallel, the water hammer problem of check valve is more prominent. Water hammer is a kind of pressure wave in the transient flow of pressure pipeline, and it is a kind of hydraulic impact phenomenon that the pressure rises or falls due to the change of fluid velocity in pressure pipeline. The physical reason is the comprehensive action of incompressibility of fluid, inertia of fluid movement and elasticity of pipeline. In order to prevent the hidden danger of water hammer in the pipeline, people have reduced the impact of water hammer while ensuring the applicability of check valves for many years.

After reading the working characteristics of stainless steel check valves, I believe you have a certain understanding of stainless steel check valves. Our North Valve Group Co., Ltd. is a manufacturer of stainless steel check valves. For decades, the company has sold high-quality valve products, and the product technology and quality have been certified by national authorities, reaching national standards and deeply trusted by customers.

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