- DN50/80/100/150/200/250/300/400/500/600 (2″/3″/4″/6″/8″/10″/12″/16″/20″/24″)
- Class 150 (PN20), Class 300 (PN50), Class 600 (PN100)
- -29°C to 425°C (standard), -46°C to 538°C (high-temperature alloy option)
- Water, steam, oil (non-corrosive), air
- A105 forged carbon steel (tensile strength ≥485MPa, yield strength ≥250MPa)
Specification
NEWWAY Forged Steel A105 Swing Single-disc Swing Check Valve
I. Product Overview
NEWWAY flanged swing check valves are crafted from A105 forged carbon steel, adhering to API 594 and ASME B16.34 standards. Featuring a single-disc swing mechanism, these valves automatically prevent backflow in industrial pipelines. With nominal diameters ranging from DN50 to DN600 (2″ to 24″) and pressure classes from Class 150 to Class 600 (PN20 to PN100), they operate reliably across temperatures from -29°C to 425°C. Ideal for water, steam, oil, and other industrial media, these valves are widely used in petroleum, chemical, power, and municipal applications.
II. Core Technical Parameters
Specifications & Operating Range
Nominal Diameter: DN50/80/100/150/200/250/300/400/500/600 (2″/3″/4″/6″/8″/10″/12″/16″/20″/24″)
Pressure Class: Class 150 (PN20), Class 300 (PN50), Class 600 (PN100)
Temperature Range: -29°C to 425°C (standard), -46°C to 538°C (high-temperature alloy option)
Media Compatibility: Water, steam, oil (non-corrosive), air
Materials & Sealing System
Body/Bonnet: A105 forged carbon steel (tensile strength ≥485MPa, yield strength ≥250MPa)
Disc: A105 with NBR rubber seal (standard), 316 stainless steel (corrosion-resistant)
Pin Shaft: 316 stainless steel (HRC30-35), chrome-plated (thickness ≥25μm)
Gasket: Flexible graphite + 304 stainless steel spiral wound (resistant to 650°C)
Mechanical Performance
Opening Pressure: ≤0.03MPa (forward flow resistance)
Closure Response Time: ≤0.5s (triggered by backflow)
Fatigue Life: ≥50,000 cycles (API 594 standard)