Pressure Seal Bonnet Swing Check Valve, A216 WCB, 6 IN CL1500
Pressure Seal Bonnet
The bonnet gasket to be metal sealing, RTJ ring – SS 304 for a long service
Inside of shaft/ outside of shaft
Outside of shaft: could be mounted lever + counterweight + damper
Large size of check valve could be mounted hydraulic damping cylinder
Design Standard: Design standard: API 600, ASME B16.34/E101
Product type: Gate valve.
Size range: NPS 2 – 60 Inch, DN50 – DN1500.
Design pressure: Class 150 – 2500 LB, PN10 – PN420.
Design temp.: -196℃ – 573℃.
Material: ASTM A216 WCB, ASTM A216 WCC, ASTM A217 WC6, ASTM A217 WC9, ASTM A217 C5, ASTM A217 C12A, ASTM A352 LCB, ASTM A352 LCC, ASTM A351 CF8, ASTM A351 CF8M, ASTM A351 CF3M, ASTM A351 CF8C, CN3MN, CK3MCUN, CN7M, ASTM A890 4A (CD3MN), ASTM A890 5A (CE3MN), ASTM A890 6A (CD3MWCuN), ASTM B148 C95800, ASTM B148 C95500.
Connection end: ASME B16.5, ASME B16.25, EN1092 series.
Operation: Handwheel, gearbox, electric.
Application: Electric power, petroleum refining, petrochemical engineering, offshore oil, chemical engineering.
Product Overview：
The Pressure Seal Bonnet Swing Check Valve branch pipe are welded structures, and the welded groove can be made according to standards or user requirements. It has advantages such as wear resistance, high temperature resistance, corrosion resistance, scratch resistance, and long service life. It is applicable to the pipes of high temperature and high pressure water, steam, oil products and Superheated steam in thermal power plants, petrochemicals, metallurgy and other thermal power plants with working pressure of Clss 15002500 and working temperature of -29~570 ℃, as a device to prevent the backflow of media.
Product Features：
1. The product design and manufacturing are in accordance with ANSI B16.34 and E101 standards, and can be equipped with imported equipment for use. 2. Adopting a pressure self sealing structure, the sealing is reliable and suitable for ultra-high pressure and high temperature working conditions.
3. The sealing surfaces of the valve disc and valve seat are made of Stellite cobalt based hard alloy overlay welding, which is wear-resistant, high-temperature resistant, with good scratch resistance and long service life.
4. The swing valve disc closes itself by relying on its own weight and medium force.
5. The valve disc rotates around the pin axis outside the valve seat to reduce violent impact during closure. 6. The built-in pin shaft structure reduces external leakage points and makes it more reliable to use.
