442 Dual Plate Iron Check Valve
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”