Specification

NEWWAY Ansi 6 Inch PN16 Cast Steel Swing Check Valve

I. Product Overview

NEWWAY flanged cast steel swing check valves comply with ANSI B16.1 and GB/T 13932 standards, constructed from WCB cast steel and 304 stainless steel. The valve ensures unidirectional flow through a disc rotating around a horizontal pin, covering DN50-DN600 (2″-24″) with PN16 (1.6MPa) pressure rating and ≤150℃ temperature range. Suitable for water, steam, oil, and acid-base solutions, it prevents equipment damage and system failures from backflow in water supply, chemical, and thermal pipeline applications.

II. Core Technical Parameters

Specifications & Pressure-Temperature Range

Nominal Diameter: DN50/80/100/150/200/250/300/400/500/600 (2″-24″)

Pressure Rating: PN16 (1.6MPa), shell test pressure 2.4MPa, sealing test pressure 1.76MPa

Temperature Range: -20℃~150℃ (standard), -40℃~200℃ (high-temperature type)

Materials & Sealing System

Body/Bonnet: WCB cast steel (ASTM A216), 304 stainless steel (ASTM A351 CF8)

Disc/Seat: Cast steel with bronze overlay (hardness ≥HB200), sealing surface roughness Ra≤1.6μm

Gasket: EPDM (standard), graphite (high-temperature), leakage rate ≤0.1% (API 598)

Connection: Flanged (RF face, ANSI B16.5/GB/T 9113)

Mechanical Performance

Opening Pressure: ≤0.03MPa (forward flow resistance)

Closure Response Time: ≤0.5s (triggered by backflow)

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