Ensure clean, safe water flow with the 237AB Lead-Free Brass Swing Check Valve—engineered to meet today’s highest plumbing and drinking water standards. Ideal for residential, commercial, and light industrial applications, this high-quality swing check valve features solder end connections and a durable, lead-free brass construction that’s both efficient and compliant.
Key Features:
- Lead-Free Certified: Complies with AB1953, NSF/ANSI 61 & 372 and meets The Drinking Water Act standard of <0>
- Solder x Solder Ends: Built to ASME B16.22 specifications for reliable, leak-free soldering.
- Durable Brass Build: Body, disc, stem, screw, and cap are made from ASTM B927 C28500 lead-free brass, ensuring long-term corrosion resistance.
- PTFE Gasket: Chemically resistant and temperature-stable gasket for enhanced sealing performance.
- Swing Check Design: \\”Y\\” pattern with a gravity-assisted disc prevents backflow and ensures unidirectional flow.
- Meets BAA Requirement: Compliant with Buy American Act standards for federal project eligibility.
- Certified for Drinking Water Applications: Fully tested and compliant with drinking water standards in the U.S. and Canada.
Performance Ratings:
- WOG (Water, Oil, Gas): 200 PSI from 15°F to 160°F
- WSP (Steam): 125 PSI up to 366°F
Certifications:
- NSF/ANSI 61 & 372
- AB1953 Compliant
- MSS-SP-80 Standard
- BAA Compliant
- C US Certification
Applications:
- Potable water systems
- HVAC and plumbing installations
- Backflow prevention in hot and cold water lines
Trust Red-White Valve Corp. for top-tier valve solutions that combine regulatory compliance, performance, and longevity. The 237AB is your go-to solution for lead-free swing check valve requirements—backed by precision engineering and certification peace of mind.
Dimension, Cv, Weight
| Size | A [in] | H [in] | P [in] | Cv | Wt. L [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 |
| Pressure/Temperature Rating | |
|---|---|
| 200 psi from 15 °F to 160 °F | 125 psi max. at 366 °F |
Material
| No. | 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 |



