Swing Check Valve | 237AB Series | Solder × Solder | Lead-Free Brass
Swing Check Valve | 237AB Series | Solder × Solder | Lead-Free Brass
Red-White Valve’s 237AB Swing Check Valve ensures dependable backflow prevention and lead-free compliance for potable water systems. Built for performance and reliability, this ECO-VALVE model is crafted from ASTM B927 C28500 lead-free brass and features solder × solder ends for easy installation in copper piping systems.
Ideal for residential, commercial, and light industrial use, the 237AB meets AB1953, NSF/ANSI 61 & 372, and MSS-SP-80 standards, and complies with Buy American Act (BAA) requirements. Its Y-pattern swing design delivers smooth, low-turbulence flow while preventing reverse movement of water, oil, or gas.
Key Features
- Lead-Free Brass Construction — Fully certified to AB1953 and NSF/ANSI 61 & 372 for potable water use under The Drinking Water Act.
- Solder × Solder Connections — ASME B16.22 compliant solder ends ensure leak-free installation into copper systems.
- Y-Pattern Swing Check Design — Gravity-assisted disc provides reliable one-directional flow and prevents back siphonage.
- Durable PTFE Gasket — Offers chemical and temperature resistance for long-lasting seal integrity.
- High Pressure Rating — 200 PSI WOG from 15 °F to 160 °F | 125 PSI WSP up to 366 °F.
- Buy American Act Compliant — Meets BAA standards for federal and commercial projects.
Pressure / Temperature Rating
| Pressure | Temperature Range |
|---|---|
| 200 PSI WOG | 15 °F to 160 °F |
| 125 PSI WSP | Up to 366 °F |
Dimension, Cv, Weight
| Size | A [in] | H [in] | P [in] | Cv | Wt. [lb] |
|---|---|---|---|---|---|
| ½″ | 2.60 | 1.65 | 0.59 | 5.33 | 0.35 |
| ¾″ | 3.39 | 1.97 | 0.75 | 10.5 | 0.87 |
| 1″ | 4.09 | 2.28 | 0.98 | 19.0 | 1.33 |
| 1¼″ | 4.72 | 2.71 | 1.26 | 32.8 | 2.04 |
| 1½″ | 5.35 | 3.19 | 1.50 | 50.6 | 2.80 |
| 2″ | 6.69 | 3.86 | 1.97 | 88.1 | 4.78 |
Material Construction
| # | Part | Material | Specification |
|---|---|---|---|
| 1 | Body | Lead-Free Brass | ASTM B927 C28500 |
| 2 | Disc | Lead-Free Brass | ASTM B927 C28500 |
| 3 | Stem | Lead-Free Brass | ASTM B927 C28500 |
| 4 | Screw | Lead-Free Brass | ASTM B927 C28500 |
| 5 | Gasket | PTFE | PTFE |
| 6 | Cap | Lead-Free Brass | ASTM B927 C28500 |
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.