Pressure Seal Swing Check Valve Description
Pressure-sealed swing check valve is a valve that achieves one-way shutoff by rotating the valve disc around the axis. Its core feature is the use of a pressure-tightening sealing structure (such as a metal gasket or elastic sealing ring) to enhance the sealing performance under high-pressure conditions through medium pressure to effectively prevent leakage. It is suitable for high-pressure pipeline systems such as petroleum and chemical industries to prevent medium backflow and reduce water hammer effects.
Valve body and sealing components
Valve body material: Carbon steel (WCB), stainless steel (316/304) or duplex steel (2205), suitable for high pressure (≤PN420) and corrosive media.
Self-tightening sealing structure: Metal spiral wound gasket or O-ring is used between the valve cover and the valve body. When the medium pressure increases, the sealing surface pressure is enhanced to achieve zero leakage (leakage rate ≤0.01%).
Valve flap and drive design
Swing valve flap: The disc-shaped valve flap rotates around the rotating axis, and the streamlined channel reduces the flow resistance (30%~50% lower than the lifting type), which is suitable for large-diameter (DN50~DN1200) low flow rate scenarios.
Buffer mechanism: Some models have built-in damping springs or hydraulic buffers to reduce the impact of valve flap closing and avoid pipeline vibration.
Pressure Seal Swing Check Valve Specification
Size：2"~24"(DN50mm-DN600mm)
Pressure：ANSI 600LB~3500LB(PN100~PN420)
Medium：water gas oil air ect
Temperature：-29℃-550℃
Body：A105,Alloy steel,CF8
Connection method: threaded , butt welding,flange
Manufacturing standards: API 6D, GB/T12235-2007
Inspection standards: API 698, GB/T12224-2015
Length standards: ASME B 16.10, GB/T12221-2005
Flange standards: JB/T74-94, GB/T9113-2010
Pressure rating: ASME B 16.34, GB/T12224-2015
Flange standards: ASME B16.5, ASME B16.47 A, API 605
Pressure Seal Swing Check Valve
Advantages
Reliable high-pressure sealing: The self-tightening sealing design has better sealing performance under high pressure (≥PN160), avoiding the bolt loosening problem of traditional flange sealing.
Low flow resistance and long life: The streamlined valve body reduces pressure loss (≤0.05MPa), and the wear-resistant alloy sealing surface (such as Stellite alloy) has a life of up to 100,000 openings and closings.
Flexible installation: Supports horizontal, vertical or inclined pipeline installation. When installed vertically, the medium flow direction must be from bottom to top.
Hot Tags: pressure seal swing check valve, China pressure seal swing check valve manufacturers, suppliers, factory, stainless steel double check valve, flanged duckbill check valve, check valve for chemical plants, check valve for power plants, Piston Check Valve, Iron Valves