API 600 ASTM A217 C12A Gate Valve, PSB, 8 Inch, 1500 LB
· Bolted bonnet type or pressure seal bonnet.
· Flexible wedge, full bore.
· For pressure seal bonnet type:
The bonnet gasket is to be metal sealing, RTJ ring – SS 304 for long service.
The threaded stem does not contact the medium to avoid the possibility of corrosion.
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.
Introduction
Compared with other valve products, the high-pressure power station gate valve is characterized by high temperature and high pressure, unique self-sealing design, the higher the pressure, the more reliable the seal. Due to the special performance, technical characteristics and working conditions, the product has formed characteristics that other products cannot replace. High temperature and high pressure power station gate valves are mainly used in the pipelines of various systems in thermal power plants to cut off or connect pipeline media.
Structural Characteristics
1. Gate valves of high temperature and high pressure for power station adopt advanced flow channel and other straight-through structure, which greatly reduces the flow resistance coefficient and energy loss, and significantly improves the service life and performance of the valve.
2. The middle cavity of the valve adopts a pressure self-tightening sealing structure with good sealing performance. Both ends of the branch pipe are welded structures.
3. The sealing surface of the valve plate and the valve seat is made of stellite cobalt-based hard alloy surfacing, which has good wear resistance, high temperature resistance, corrosion resistance and scratch resistance.
4. After quenching and tempering and surface nitriding, the valve stem has good corrosion resistance and scratch resistance.
5. The structure of the opening and closing parts can be designed into single wedge, double wedge, parallel double wedge and other forms according to user requirements.
