Specification

NEWWAY High Temperature Steam Forged Steel Lift Check Valve

I. Product Overview

NEWWAY high-temperature steam flanged forged steel lift check valves are constructed from WCB forged carbon steel, designed to GB/T 12235 and API 594 standards. The valve ensures unidirectional flow through a lift-type disc guided by vertical rods, covering DN15-DN300 (1/2″-12″) with PN16 (1.6MPa) pressure rating and -20℃~425℃ temperature range. Specifically engineered for high-temperature steam, thermal oil, and similar media, it serves petrochemical, power, and heating industrial pipelines.

II. Core Technical Parameters

Specifications & Operating Range

Nominal Diameter: DN15/20/25/40/50/80/100/150/200/250/300 (1/2″-12″)

Pressure Class: PN16 (shell test pressure 2.4MPa, sealing test pressure 1.76MPa)

Temperature Range: -20℃~425℃ (standard), -40℃~550℃ (high-temperature alloy option)

Media Compatibility: Saturated steam, superheated steam, thermal oil, water, compressed air

Materials & Sealing System

Body/Bonnet: WCB forged carbon steel (tensile strength ≥485MPa, elongation ≥22%)

Disc/Seat: WCB with STL alloy overlay (HRC58-62), sealing surface roughness Ra≤0.8μm

Gasket: Flexible graphite + 304 stainless steel wound gasket (resists 600℃)

Connection: Flanged (RF face, GB/T 9113-2010/ASME B16.5)

Mechanical Performance

Opening Pressure: ≤0.05MPa (forward flow resistance)

Closure Response Time: ≤0.3s (triggered by backflow)

Water Hammer Resistance: 1000 cycles without damage (ISO 16780)