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Wafer Type Butterfly Check Valve
Product overview
DH77X Wafer type butterfly check valve is an energy-saving product that our factory adopts foreign advanced structural design and complies with relevant national standards. This product has good non-return performance, safety and reliability, and small flow resistance coefficient. It is mainly used in petroleum, chemical, food, pharmaceutical, textile, papermaking, water supply and drainage, smelting, and energy systems, as a check valve.
Product Features
1. Small size, light weight, compact structure, convenient maintenance.
2. The valve plate adopts dual type, which can close automatically under the elastic moment of spring.
3. Due to the quick closing effect, it can prevent the backflow of medium and eliminate the water hammer.
4. The valve body has small length and size, good rigidity, safety and reliability.
5. The leakage is zero in hydrostatic test.
6. Easy to install, can be used for horizontal and vertical installation.
7. The dimension of flange connection shall comply with the provisions of GB / t17241.6-98.
8. The length of the structure meets the requirements of GB / t12221-89 and iso5752-82.
Execution Standard
Design spec：JB/T8937
Face to Face：JB/T8937
Flange end：GB/T9113、JB/T79.1、HG/T20592
Test & check：JB/T9092、GB/T 13927
Performance Parameter
Nominal diameter：DN40~700mm
Nominal Pressure：PN1.0MPa
Applicable media：Water, steam, oil, nitric acid and other corrosive media, strong oxidation medium, acetic acid and other corrosive media, urea and other corrosive media
Applicable temperature：-29≤425℃
Main materials：Carbon steel, stainless steel, alloy steel
