- DN50/80/100/150/200/250/300 (2″-12″)
- PN16 (shell test pressure 2.4MPa, sealing test pressure 1.76MPa)
- -196℃~230℃ (304 SS), -101℃~600℃ (316 SS)
- 304 stainless steel (ASTM A351 CF8), 316 stainless steel (ASTM A351 CF8M)
- Metal-to-metal seal (surface roughness Ra≤0.8μm), leakage rate ≤1×10⁻⁶cc/s (API 598)
- Wafer type (fits ANSI B16.5/GB/T 9113 flanges)
Specification
NEWWAY PN16 Wafer Type Metal Seated Stainless Steel 304 316 Manual Check Valve
I. Product Overview
NEWWAY wafer-type metal-seated check valves are constructed from 304/316 stainless steel (CF8/CF8M), designed to GB/T 12236 and API 594 standards. Installed between flanges via a wafer-style design, they cover DN50-DN300 (2″-12″) with PN16 (1.6MPa) pressure rating and -196℃~600℃ temperature range. Suitable for water, steam, oil, and corrosive media, these valves use a rotating disc for automatic backflow prevention in harsh industrial applications like petrochemical, nuclear, and LNG sectors.
II. Core Technical Parameters
Specifications & Pressure-Temperature Range
Nominal Diameter: DN50/80/100/150/200/250/300 (2″-12″)
Pressure Class: PN16 (shell test pressure 2.4MPa, sealing test pressure 1.76MPa)
Temperature Range: -196℃~230℃ (304 SS), -101℃~600℃ (316 SS)
Materials & Sealing System
Body/Disc: 304 stainless steel (ASTM A351 CF8), 316 stainless steel (ASTM A351 CF8M)
Sealing Pair: Metal-to-metal seal (surface roughness Ra≤0.8μm), leakage rate ≤1×10⁻⁶cc/s (API 598)
Connection: Wafer type (fits ANSI B16.5/GB/T 9113 flanges)
Pin Shaft: 2Cr13 stainless steel (HRC35+), erosion-resistant
Mechanical Performance
Opening Pressure: ≤0.02MPa (forward flow resistance)
Closure Response Time: ≤0.3s (triggered by backflow)
Fatigue Life: 100,000 cycles without seal failure (GB/T 13932)