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Pressure Seal Bonnet Check Valves High Pressure


The pressure seal bonnet check valve is an automatic valve. Under the action of the fluid pressure flowing in one direction, the valve flap opens; when the fluid flows in the opposite direction, the fluid pressure and the self-coincidence of the valve flap act on the valve seat, thereby cutting off the flow. The middle cavity of the pressure self-tight sealing check valve adopts a pressure self-tight sealing structure, which has good sealing performance under high temperature and high pressure conditions. The higher the internal cavity pressure, the better the sealing performance.


1. Butt welding or flange connection for different pipe requirements.

2. The connection of the valve cover is absolutely safe and sealed, so the pressure-sealed globe valve can provide a closer service in the maintenance of the valve under the high temperature and high pressure environment.

3. The valve's high-temperature and pressure-resistant parts are made of high-quality heat-resistant alloy steel, which has good high-temperature performance, high pressure resistance, durability, safety and reliability.

Major specification

Nominal size: 2"~24"(DN50~DN600)

Nominal pressure: Class150~2500(PN10~PN420)

Standard: BS1868, API594,ASME B16.34

Body material:Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel

End connection:RF, BW, RTJ,