247AB LF Brass Swing Check Valve
Engineered for durability and compliance, the 247AB LF Brass Swing Check Valve features a robust lead-free brass body and seat, designed to meet strict safety standards. Ideal for residential, commercial, and industrial plumbing systems, this valve ensures efficient backflow prevention with its horizontal "T" pattern design.
Key Features & Benefits:
✅ Lead-Free Brass Construction: Compliant with AB1953, NSF/ANSI 61 & 372 for safe potable water applications.
✅ 200# WOG Rating: Withstands working pressures up to 200 PSI for water, oil, and gas.
✅ Horizontal "T" Pattern: Compact design optimizes flow efficiency and minimizes pressure drop.
✅ Solder-End Connections: ASME B16.22 compliant for secure, leak-free jointing.
✅ Low-Lead Brass Disc: Corrosion-resistant and built for long-term reliability.
✅ Certified Quality: Meets NSF/ANSI standards for health and safety assurance.
Technical Specifications:
- Material: Lead-free brass body, seat, and components; PTFE gasket.
- Ends: Solder x Solder (ASME B16.22).
- Pressure Rating: 200# WOG (Water, Oil, Gas).
- Temperature Range: Suitable for systems up to 450°F.
- Sizes Available: ¼" to 4" (stainless steel stem included for sizes 2½"–4" for enhanced durability).
Applications:
- Residential and commercial plumbing systems.
- HVAC, industrial piping, and irrigation systems.
- Potable water lines, oil, and gas distribution.
Why Choose This Valve?
The 247AB LF combines regulatory compliance with industrial-strength performance. Its lead-free brass construction and NSF certifications make it a safe choice for drinking water systems, while the horizontal "T" design ensures reliable operation in high-demand environments.
Compliance & Certifications:
✔️ AB1953 Compliant
✔️ NSF/ANSI 61 & 372 Certified
✔️ ASME B16.22 Solder Joint Standards
Note: Includes a stainless steel stem for sizes 2½"–4" to ensure corrosion resistance in larger applications.
Dimension, Weight
| Size | S [in] | A [in] | H [in] | L [in] | B [in] | C [in] | P [in] | Wt. [lb] |
|---|---|---|---|---|---|---|---|---|
| ¼″ | 0.627-0.631 | 2.32 | 1.39 | 1.26 | 0.96 | 0.51 | 0.51 | 0.34 |
| ¾″ | 0.877-0.881 | 2.93 | 1.57 | 2.50 | 1.02 | 0.75 | 0.73 | 0.58 |
| 1″ | 1.128-1.131 | 3.66 | 1.81 | 1.77 | 1.14 | 0.91 | 0.94 | 0.78 |
| 1¼″ | 1.378-1.381 | 3.88 | 2.19 | 2.11 | 1.50 | 0.98 | 1.20 | 1.22 |
| 1½″ | 1.628-1.632 | 4.45 | 2.42 | 2.44 | 1.61 | 1.09 | 1.42 | 1.82 |
| 2″ | 2.128-2.132 | 5.32 | 2.81 | 2.95 | 1.48 | 1.34 | 1.77 | 2.62 |
| 2½″ | 2.628-2.632 | 6.50 | 3.48 | 3.74 | 1.81 | 1.50 | 2.24 | 4.72 |
| 3″ | 3.128-3.132 | 7.28 | 3.91 | 4.41 | 2.05 | 1.69 | 2.56 | 7.00 |
| 4″ | 4.128-4.133 | 9.37 | 4.51 | 5.51 | 2.40 | 2.17 | 3.58 | 11.72 |
| Pressure/ Temperature Rating | |
|---|---|
| 200# WOG | Temp. max. 450 °F |
Material
| Part | Material | Specification | |
|---|---|---|---|
| 1 | Body | Lead Free Brass | ASTM B927 C27450 |
| 2 | Retaining disc | Lead Free Brass | ASTM B927 C27450 |
| 3 | Stem | Lead Free Brass * | ASTM B927 C27450 |
| 4 | Bolt | Lead Free Brass | ASTM B927 C27450 |
| 5 | Gasket | PTFE | PTFE |
| 6 | Cap | Lead Free Brass | ASTM B927 C27450 |
* Stainless steel stem for size 2½″ -4″