Ball Valve with Drain & Relief Port | 3400AB Series | Standard Body | Solder × FNPT
The 3400AB Lead-Free Brass Solder Tankless Water Heater Valve Kit provides a durable, code-compliant solution for standard installations. Featuring a solder end × FNPT tailpiece design and lead-free brass construction, this valve ensures long-term reliability, corrosion resistance, and smooth operation for both residential and commercial tankless water heater systems.
Engineered for serviceability and efficiency, the 3400AB includes an integral relief valve port, hose-end drain/purge valve, and full port design for unrestricted flow. Certified to AB1953 and NSF/ANSI/CAN 61 & 372, it delivers trusted performance under 600# WOG (non-shock) conditions.
Key Features
- Model: 3400AB – Standard Body configuration
- Connection Type: Solder × FNPT (ASME B1.20.1-NPT)
- Pressure Rating: 600# WOG (non-shock)
- Operation: ¼-turn ball valve
- Material: Lead-free brass body and components
- Seat Material: PTFE (Teflon)
- Relief Valve Port: Integral ¾″ connection
- Drain/Purge Valve: Integral hose-end with cap
- Stem: Blow-out proof design
- Packing: Adjustable PTFE
- Port: Full-port for maximum flow capacity
Compatible Relief Valve Options
- 3400RAB: 200K BTU/hr
- 3400SAB: 500K BTU/hr
- 3400TAB: 2.7 M BTU/hr
Dimensions & Weight
| Size | Φ[in] | ΦSC[in] | ΦS[in] | ΦP[in] | A[in] | B[in] | C[in] | H[in] | Wt.*[lb] |
|---|---|---|---|---|---|---|---|---|---|
| ¾″ | ¾ – 14 NPT | ¾ – 14 NPT | 0.877 – 0.881 | 0.73 | 4.28 | 2.35 | 1.14 | 1.66 | 1.74 / 1.64 |
| 1″ | 1 – 11.5 NPT | ¾ – 14 NPT | 1.128 – 1.131 | 0.98 | 4.64 | 2.54 | 1.35 | 2.11 | 1.89 / 1.77 |
3401AB / 3402AB
Material Composition
| Part | Material | Specification |
|---|---|---|
| Body | Lead-Free Brass | ASTM B927 C27450 |
| Fixed End | Lead-Free Brass | ASTM B927 C27450 |
| Ball | Lead-Free Brass / Cr Plated | ASTM B927 C27450 |
| Seat | PTFE | PTFE |
| Stem | Lead-Free Brass | ASTM B927 C27450 |
| Packing Ring | PTFE | PTFE |
| Packing Nut | Brass | ASTM B124 C37700 |
| T-Handle | Aluminum | ASTM B85 |
| Handle Nut | Steel / Zn Plated | ASTM A36 |
| Handle Screw | Steel / Zn Plated | ASTM A36 |
| Handle | Aluminum | ASTM B85 |
| Union Nut | Brass | ASTM B283 C37700 |
| Union | Lead-Free Brass | ASTM B927 C27450 |
| O-Ring | EPDM Perox | NSF Approved |
| Cap Retainer | Rubber | – |
| Drain Cap | Brass | ASTM B283 C37700 |
| Drain Gasket | EPDM Perox | NSF Approved |
3400AB Tankless Water Heater Valve Kit, Standard Body Ball Valve, Lead-Free Brass, Solder × FNPT Connection, Drain Port, Relief Port, 600 WOG, NSF/ANSI/CAN 61 & 372 Certified, AB1953 Compliant, Red-White Valve Corp
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