Check valve construction and installation pointsPosted by nsbcfloori on November 15th, 2019 Check valve construction, installation points: 1), installation location, height, direction of import and export must meet the design requirements, pay attention to the direction of flow of the medium should be consistent with the direction of the arrow marked by the valve body, the connection should be firm and tight. 2), the appearance of the valve must be installed before the inspection, the valve nameplate should be consistent with the current national standard "General Valve Flags" GB 12220 requirements. For the working pressure is greater than 1.0 MPa and the main pipe to play the role of cut-off valve, the installation should be carried out before the intensity and tightness test, qualified after the standard use. Strength test, the test pressure of 1.5 times the nominal pressure, the duration of not less than 5min, valve housing, packing should be no leakage as qualified. Tightness test, the test pressure of 1.1 times the nominal pressure; test duration in line with the requirements of GB 50243. 3) Do not subject the check valve to heavy loads in the pipeline. Large aetv One-way valve: Independently supported so that it is not affected by the pressure generated by the piping system. JESSRO Polythene (PE) pipe fittings of Socket Welding Type are all using fresh original materials. And all the materials are PE100 only .This materials can guarantee our PE fittings be able to meet the SDR11 standard. We provide Welding Flanges that are available in two forms, one is Socket Welding type and another is Butt Welding For SDR 11. Fabricated using quality forged carbon steel, our range is widely used in various industry applications. We have all the size from 20mm to 110mm in a full range items. PE Pipe Fittings Features: High strength All of our PE fittings can following your specific requirement .And we can supply you the professional service. Looking forward to the pleasure of receiving your detail inquiry! Socket Welding Type Socket Weld Fittings, Butt Weld Fittings, Socket Welding JESSRO INDUSTRY CO., LTD. , http://www.pepipefittings.com Like it? Share it! More by this author |