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WENZHOU YONGIDE VALVE CO.,Ltd.
Products

Wafer Check Valves
Wafer Check Valves for nominal pressure PN1.0MPa ~ 42.0MPa, Class150-2500; nominal diameter DN 15 ~ 1200mm, NPS 1/2 to 48; various pipeline operating temperature of -196 ~ 540 ℃ for prevention the media back. By choosing different materials, applicable to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea and other media.
Structural characteristics of
A short length of the structure, the length of its structure is only the traditional flange check valve 1/4 to 1/8
2, small size, light weight, the weight of traditional flange check valve 1/4 to 1/20
3, valve valve fast, the water hammer pressure
4, horizontal or vertical pipe can be used, easy installation
5, the flow is smooth, fluid resistance
6, sensitive, good sealing performance
7, the valve flap a short trip off valve impact
8, the overall structure is simple and compact, attractive appearance
9, long life, high reliability
Advantage
1, small size, light weight, compact structure, easy maintenance
2, the valve plate to even type, the elastic force of the spring moments own speed closed
3, due to quick closing to prevent the media back
4, the length of the body structure size small, rigid
5, safe and convenient, can be used for horizontal and vertical in both directions to install
Working principle
1, when the media according to the provisions of the direction of flow, the valve flap by the media the role of force, be open; upstream medium of the role of the media opposing force, due to the weight of the valve and valve, the valves and valve seat sealing surface density Hop off, to prevent the media reflux.
2, the sealing surface of the valve body and valve with stainless steel surfacing.
Installation
1, the valve path at both ends shall be blocked, there is a dry and ventilated room. Such as long-term storage should always check the anti-corrosion.
2, before installation, the valve should be cleaned, and the elimination of the defects caused during transport.
3, the installation must carefully check valve on the signs and nameplate compliance requirements.
4, the valves installed in horizontal pipelines, the valve cover up.

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