236AB LF Brass Swing Check Valve
The 236AB LF Brass Swing Check Valve ensures reliable backflow prevention in residential, commercial, and industrial systems. Constructed from lead-free brass and certified to NSF/ANSI 61 & 372, this valve meets rigorous safety standards for drinking water applications. Its Y-pattern design minimizes pressure drop, while the swing check mechanism guarantees smooth, low-resistance flow—ideal for HVAC, plumbing, and industrial pipelines.
Key Features
✅ Certified Safe & Lead-Free
- Compliant with AB1953 and NSF/ANSI 61 & 372 for potable water safety.
- Lead-free brass body and disc align with California’s BAA requirements and global health regulations.
✅ High-Performance Design
- Y-Pattern Configuration: Reduces turbulence and pressure loss for efficient flow.
- Swing Check Mechanism: Self-cleaning action ensures reliable sealing and durability.
- Virgin PTFE Gasket: Provides a leak-proof, chemical-resistant seal for long-term reliability.
✅ Industrial-Grade Durability
- 125# WSP / 200# WOG Rating: Built to handle water, oil, and gas under high pressure.
- Threaded Ends (ASME B1.20.1-NPT): Easy installation and compatibility with standard piping systems.
✅ Compliance & Standards
- Meets MSS-SP-80 for industrial valve quality.
- Corrosion-resistant brass construction extends service life in harsh environments.
Technical Specifications
- Material: Lead-Free Brass (Body, Disc), Virgin PTFE (Gasket)
- End Connections: FNPT x FNPT (ASME B1.20.1-NPT)
- 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 water, oil, or gas pipelines
- Fire suppression and municipal water supply
Why Choose This Valve?
The 236AB LF combines safety, efficiency, and durability, making it a top choice for contractors and engineers. Its Y-pattern design and lead-free construction ensure compliance with strict health standards, while the swing check mechanism reduces maintenance needs.
Order Today – Trusted for critical applications where reliability matters!
Dimension, Cv, Weight
| Size | A [in] | H [in] | P [in] | Cv | Wt. L [lb] |
|---|---|---|---|---|---|
| ½" | 2.21 | 1.65 | 0.59 | 5.33 | 0.56 |
| ¾" | 2.76 | 1.97 | 0.75 | 10.5 | 0.86 |
| 1" | 3.15 | 2.28 | 0.98 | 19.0 | 1.28 |
| 1½" | 3.78 | 2.71 | 1.26 | 32.8 | 2.06 |
| 2" | 4.33 | 3.19 | 1.50 | 50.6 | 2.84 |
| 2½" | 5.04 | 3.86 | 1.97 | 88.1 | 4.46 |
| 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 |