Worm Gear Operated Butterfly Valve With Soft Seat

Product Model: D71X-10/16Q、D71X-10K 、D71X-150LB
Size: DN40-DN800
Nominal Pressure: PN10/PN16/Class 150/10K
Suitable Temperature: -20～120℃
Applicable Medium: Clear water, neutral liquid, weak acid and alkali, sea water, Oils, etc.
Body Materials: Ductile Iron
Application field: Municipal construction, water treatment, water supply and drainage, water con servancy projects, etc.

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Design and Manufacture Standard:	API 609
Face to Face:	API 609
Test Standard：	API 598
Top Flange Connection Standard:	ISO 5211
Flange Size Standard:	ASME B16.5、ASME B16.47、DIN 2501
Flange Size Standard:	ASME B16.1、JIS B2220

（1）All products can provide the pressure test: All CHAOJI products can provide the pressure test report before leaving the factory.
（2）High performance seat rubber: The rubber content is 50%, and the switch life is more than 30000 times
（3）Soft seat: Compared with the hard seat, the contact surface between pipes and flanges is more wider than hard seat, and sealing performance of installation is better, and the special flange of the butterfly valve is not required;
（4）Axial seal: The shaft is supported by 4 oil-free bearings, with o-ring and oil seal double seal structure design, smaller torque and reliable seal; The upper and lower shaft holes of DN350 and above large diameter valves are designed with packing box structure, and the packing is pressed by the gland to realize sealing.
（5）Surface coating: Epoxy powder coating is adopted, with strong adhesion and good weather resistance. It can be used indoors and outdoors.
（6）The design of shaft is blow-off resistant: The no-pin butterfly valve is designed with anti blow-off structure, and worm gear can be changed under pressure.
（7）Because of No pin structure and soft back seat, CHAOJI products installation without any special equipment, easy to repair and replace parts.