237AB LF Brass Swing Check Valve
The 237AB LF Brass Swing Check Valve delivers reliable backflow prevention in residential, commercial, and industrial systems. Crafted from lead-free brass and certified to NSF/ANSI 61 & 372 and AB1953, this valve meets the strictest safety standards for drinking water applications. Its Y-pattern design minimizes turbulence and pressure loss, while the swing check mechanism ensures smooth, maintenance-free operation—perfect for HVAC, plumbing, and industrial pipelines.
Key Features
✅ Certified Safe & Lead-Free
- Compliant with AB1953 and NSF/ANSI 61 & 372 for global potable water safety.
- Lead-free brass body and disc align with California’s BAA requirements.
✅ High-Efficiency Design
- Y-Pattern Configuration: Reduces pressure drop and optimizes flow for energy-efficient systems.
- Swing Check Mechanism: Self-cleaning action ensures reliable sealing and longevity.
- Virgin PTFE Gasket: Leak-proof and resistant to chemicals, ensuring a durable seal.
✅ Industrial Durability
- 125# WSP / 200# WOG Rating: Built to handle water, oil, and gas under high pressure.
- Solder Ends (ASME B16.22): Permanent, leak-free joints for copper piping systems.
✅ Compliance & Reliability
- Meets MSS-SP-80 for industrial-grade valve performance.
- Corrosion-resistant brass construction extends lifespan in harsh environments.
Technical Specifications
- Material: Lead-Free Brass (Body, Disc), Virgin PTFE (Gasket)
- End Connections: Solder x Solder (ASME B16.22)
- Pressure Rating: 125 PSI WSP / 200 PSI WOG
- Standards: MSS-SP-80, AB1953, NSF/ANSI 61 & 372
Ideal For
- Residential/commercial plumbing systems
- HVAC and refrigeration units
- Industrial oil, gas, or chemical pipelines
- Fire suppression and municipal water networks
- Why Choose This Valve?
The 237AB LF combines safety, durability, and ease of installation, making it a top choice for contractors and engineers. Its Y-pattern design reduces energy costs by minimizing pressure loss, while lead-free construction ensures compliance with the most rigorous health standards.
Order Today – Trusted for critical applications where performance and safety cannot be compromised!
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 |