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" GB12220 requirements. For the working pressure is greater than 1.0MPa 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 of GB50243 meet the requirements. 3) Do not subject the check valve to heavy loads in the pipeline. Large check valve (aetvOne-wayvalve): Independently supported so that it is not affected by the pressure generated by the piping system. More Keyword Search: Check Valve
Our company mainly produces EVA series
shoes mould and PVC series shoes mould, including EVA injection slipper molds,
EVA winter shoes mould, EVA sole mould, EVA sole sports mould, EVA boots mould,
EVA garden shoes mould, EVA two color shoes mould;PVC air blowing mould, PVC
leather shoe mould, PVC air blowing sole mould, PVC airbowing two color slipper
mould, PVC two color leather shoe mould, PVC air blowing bathroom slipper
mould, PVC 2/3 color sole mould and PVC two color crystal shoe mould.
Our company's molds are suitable for most molding machines.
EVA Shoes Mould, PVC Shoes Mould
SHIJIAZHUANG LONGXUAN TRADING CO., LTD , https://www.longxuanmachines.com