RED-WHITE VALVE CORP.  |  SKU: 30077640  |  MPN: 442 2

442 Dual Plate Iron Check Valve

Size
  • Rapid ANSI Flange Integration: Wafer-style design enables bolt-free installation between standard flanges, reducing setup time by 50% versus traditional valves.
  • Dual-Environment Resilience: Combines NBR’s oil/fuel resistance with bronze’s aqueous corrosion protection for hybrid fluid systems.
  • Surge-Suppression Mechanics: Spring-loaded dual discs eliminate water hammer risks in pump systems, protecting pipeline integrity.
  • Cross-Industry Adaptability: Certified for 150# WOG pressure across HVAC, wastewater, oil/gas, and compressed air applications.

Ensure reliable unidirectional flow in tight spaces with the 442 Dual Plate Iron Check Valve, featuring a robust wafer-style design and corrosion-resistant bronze discs. Ideal for water, oil, and gas applications, this valve combines rapid response sealing with low-maintenance operation, making it a cost-effective solution for industrial and commercial piping systems.

Key Features:

  • Dual Plate Design: Spring-assisted bronze discs provide instant shutoff, minimizing water hammer and backflow risks.
  • Wafer-Style Construction: Compact, lightweight body installs easily between ANSI flanges without additional bolting hardware.
  • Durable Materials: Cast iron body with bronze discs and NBR (Nitrile) seats ensures longevity in corrosive or high-velocity media.
  • 150# WOG Rating: Certified for 150 PSI working pressure across water, oil, and gas systems.
  • Low-Profile Efficiency: 90% lighter than traditional swing check valves, ideal for space-constrained installations.

Technical Specifications:

  • Body Material: Cast Iron
  • Disc Material: Bronze
  • Seat Material: NBR (Nitrile Butadiene Rubber)
  • End Connection: Wafer-style (ANSI B16.1/16.5 compatible)
  • Pressure Class: 150# WOG
  • Temperature Range: -20°F to 250°F (-29°C to 121°C)*

Ideal Applications:

  • Pump discharge lines
  • HVAC and fire protection systems
  • Industrial water treatment plants
  • Compressed air and gas pipelines
  • Oil and fuel transfer systems

Why Choose This Valve?

The 442 Dual Plate Check Valve delivers superior performance in compact spaces, with its wafer design cutting installation time by up to 50% compared to flanged alternatives. The NBR seats provide excellent resistance to petroleum-based fluids, while the bronze discs prevent corrosion in wet environments. A top choice for engineers prioritizing space efficiency, durability, and leak-free operation.

Temperature range based on NBR seat limitations. Verify media compatibility for specific applications.

Dimension, Weight

Size ΦA [in] ΦE [in] B [in] GR [in] F [in] Weight [lb]
2” 4.02 2.56 1.69 1.13 0.75 4
2-½” 4.76 3.15 1.81 1.42 0.79 5
3” 5.24 3.70 2.52 1.71 1.10 7
4” 6.73 4.61 2.52 0.23 1.06 12
5” 7.60 5.71 2.76 2.59 1.18 15
6” 8.62 6.69 2.99 3.09 1.22 21
8” 10.87 8.82 3.50 4.11 1.30 35
10” 13.27 10.43 4.49 5.00 1.97 61
12” 15.98 12.20 4.49 5.83 1.69 116
Pressure Rating Temperature Rating
150# WOG 180 °F max. temp.

Material

Item Part Material Specification
1 Body Cast Iron A126-B
2 Disc (plate) Bronze ASTM B584 C83600
3 Spring Stainless steel ASTM A313 S31600
4 Hinge pin Stainless steel ASTM A276 S30400
5 Stop pin Stainless steel ASTM A276 S30400
6 Plug Steel  
7 Body washer PTFE PTFE
8 Spring washer PTFE PTFE
9 Eye bolt¹ Steel ASTM A307-A
10 Seat NBR  

¹ Only on 6”-12”

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