Dual Plate Iron Check Valve | 445 Series | Wafer Style | EPDM Seat
Dual Plate Iron Check Valve | 445 Series | Wafer Style | EPDM Seat | 150 PSI WOG
445 Series Dual Plate Iron Check Valves combine compact design with durable performance for water, HVAC, and hydronic systems. Constructed with a cast iron wafer-style body, bronze dual plates, and a resilient EPDM seat, this valve ensures reliable backflow prevention with minimal pressure drop and quiet operation.
Engineered for installation between ANSI flanges, the 445 Series features spring-loaded dual plates that close quickly to minimize water hammer and reduce maintenance costs. With a 150# WOG rating and a maximum operating temperature of 180°F, it’s a dependable solution for clean water and light commercial flow control applications.
Key Features & Benefits
- 150 PSI WOG Rating — Reliable performance in hydronic, HVAC, and general-purpose water systems up to 180°F.
- Dual Bronze Plates — Bronze discs deliver exceptional corrosion resistance and longevity in water service environments.
- Spring-Loaded Plates — Quick-closing design prevents backflow and water hammer, reducing system wear.
- Wafer Style Body — Compact, lightweight cast iron housing fits easily between standard ANSI flanges.
- EPDM Seat — Ensures resilient sealing, chemical resistance, and extended service life.
- Stainless Steel Internals — Hinge pins, springs, and stop pins made of stainless steel for corrosion protection.
Dimensions & 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 | 3 |
| 2-1/2" | 4.76 | 3.15 | 1.81 | 1.42 | 0.79 | 4 |
| 3" | 5.24 | 3.70 | 2.52 | 1.71 | 1.10 | 7 |
| 4" | 6.73 | 4.61 | 2.52 | 0.23 | 1.06 | 11 |
| 5" | 7.60 | 5.71 | 2.76 | 2.59 | 1.18 | 15 |
| 6" | 8.62 | 6.69 | 2.99 | 3.09 | 1.22 | 20 |
| 8" | 10.87 | 8.82 | 3.50 | 4.11 | 1.30 | 33 |
Pressure & Temperature Ratings
| Pressure Rating | Temperature Rating |
|---|---|
| 150# WOG | 180°F Max |
Material Construction
| # | 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 | EPDM | — |
Compliance: Meets ANSI B16.1 wafer face-to-face standards for dual plate check valves.
Warning (California Prop 65): This product can expose you to chemicals including lead, known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.