type structure
Polyethylene gas valve with the valve is generally divided into small polyethylene valve (SD63 below) and large polyethylene valves (SD63 or more, with SD63). No small polyethylene valves generally bleeding mouth, large polyethylene valve can be used according to need no, set one or set two elution mouths.
4 Features
(1) Resistant to corrosion. Polyethylene is inert material, except for a few strong oxidants, can be resistant to the erosion of a variety of chemical media. Electrochemical corrosion-free, no coating.
(2) No leakage. Polyethylene brass ball valve body and the end of the connection pipe connecting part mainly fusion (fusing connection or fused connection), weld width, sealing performance. Type joints with rubber rings or other mechanical joints compared to joints do not exist because of the risk of distortion caused by external leakage.
(3) High toughness. Polyethylene is a highly ductile material, the elongation at break generally more than 500%, based on management’s ability to adapt to uneven settlement is very strong. Is also a good seismic performance of the pipeline?

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