Pressure Seal Swing Check Valve

Name: Pressure Seal Swing Check Valve
Brand: VTXFLOW

For power station high pressure/temperature lines.

Check Valve Series

Pressure Seal Swing Check Valve

For boiler feed and main steam systems, the pressure-seal bonnet swing check seals tighter as pressure rises, eliminating bonnet flange leakage at Class 900–2500 and up to 600°C.

As part of the VTXFLOW check valve range, every pressure seal swing check valve is produced under our certified quality system — from in-house casting and CNC precision machining to 100% pressure and seat-tightness testing before shipment, with EN 10204 3.1 material certificates supplied.

Pressure-seal bonnet — leak-free at high P/T
WC6 / WC9 / F91 bodies for steam service
Stellite-faced disc and seat
Butt weld ends for direct pipeline welding

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Pressure Seal Swing Check Valve — VTXFLOW Check Valve Series

Technical Specifications

Size Range	1/2" – 48" (DN15 – DN1200)
Pressure Class	ASME 150 – 2500 LB / PN16 – PN420
Body Materials	WCB, WC6, WC9, CF8, CF8M, LCB, Duplex, Bronze
Design Standards	API 6D, BS 1868, API 594, JIS B2071
End Connections	RF, RTJ, BW, Wafer, Lug

Typical Applications

Pump discharge protectionCompressor stationsBoiler systemsPipeline stationsFire protection

How to Order — What to Specify

Size and pressure class
Type: swing, dual-plate, lift, tilting or nozzle
Body material and trim
End connections: RF, RTJ, BW, wafer or lug
Required cracking pressure / spring option
Design standard: API 6D, BS 1868 or API 594
Options: lever and weight, damper, NACE

Every pressure seal swing check valve is shell and seat tested to API 598 / ISO 5208 before shipment and delivered with EN 10204 3.1 material certificates. PMI, NDE and third-party inspection (SGS / BV) are available on request.

Other Check Valve Products

Swing Check Valve Lift Check Valve Duplex Disc Wafer Check Valve Tilting Check Valve Nozzle Check Valve All Check Valves →

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Interested in the pressure seal swing check valve? Tell us your size, pressure class, material, standard and quantity — our engineers respond within 24 hours.