Product reference standard:
Design and manufacture: GB12235.
Structure length: GB12221.
Pressure temperature grade: GB9131 JB/T74 HG20604.
Connection flange: JB/T79 GB9113 hg20593-20635.
Test and test: GB13927 JB/T9092.
Flange connection of the cut-off valve is suitable for the nominal pressure PN1.6 ~ 16.0 Mpa, the working temperature – 29 ~ 550 ℃ in the petroleum, chemical, pharmaceutical, chemical fertilizer, power industry, such as all kinds of working condition of the pipeline, cut off or connect medium. Applicable media: water, oil, steam, acid medium, etc. Operation mode: manual, gear transmission, electric, pneumatic and so on.
Product structure features:
1. The product is in accordance with national standard GB12235, with reasonable structure, reliable sealing, excellent performance and beautiful appearance.
2. The sealing surface of disc and seat is made of stellite cemented carbide surfacing.
3. The valve rod is treated with the adjustment and surface nitriding, which has good corrosion resistance and abrasion resistance.
4. Various piping flange standard and flange sealing type can be used to meet various engineering needs and user requirements.
5. The valve body material is complete, the packing and gasket are suitable according to the actual working conditions or users’ requirements, and can be applied to various pressure, temperature and medium working conditions.
6. Pour sealing adopts screw connection seal seat or ontology austenitic stainless steel welding and become, reliable sealing, packing replacement and repair without downtime, convenient and quick does not affect the system running.