50143 H.B. SMITH Gas Valve (VR8304M3103) – NG & LP
The H.B. Smith 50143 Gas Valve is a direct replacement for natural gas (NG) and propane (LP) applications. Compatible with Resideo/Honeywell VR8304M3103/B, this valve ensures safe, precise control of gas flow for your heating system. Designed specifically for GB100 H.B. Smith boilers, it provides reliable operation, adjustable pressure, and simple installation.
🌟 Key Features
✅ Used on GB100 H.B. Smith Boilers – Ideal replacement for these systems
✅ NG & LP Compatible – Works with both natural gas and propane systems
✅ Direct Replacement – Fits VR8304M3103/B applications
✅ 24V Operation – 60Hz, 0.7 Amps total current
✅ Adjustable Pressure Range – 3–5" WC (Water Column) for flexible system tuning
✅ Durable Construction – Designed for long-lasting, reliable performance
✅ Includes Regulator – 3/4" regulator and valve ports (1/2" x 3/4")
⚙️ Technical Specifications
| Specification | Details |
|---|
| Brand |
H.B. Smith |
| Part Number |
50143 |
| OEM Equivalent |
VR8304M3103/B (Resideo/Honeywell) |
| Gas Type |
Natural Gas (NG), Propane (LP) |
| Voltage |
24 VAC |
| Frequency |
60 Hz |
| Total Current |
0.7 Amps |
| Pressure Range |
Adjustable 3–5" WC |
| Regulator Size |
3/4" |
| Valve Port Size |
1/2" x 3/4" |
| Compatible Boilers |
H.B. Smith GB100 Series |
⚠️ Common Symptoms (When Replacement is Needed)
-
Burner fails to ignite or gas flow is inconsistent
-
Flame fluctuations or delayed ignition
-
Gas odor near the appliance
-
Valve leak or malfunction
-
Pressure irregularities affecting burner performance
❓ Frequently Asked Questions (FAQ)
Q1: Does this valve fit both natural gas and propane?
➡️ Yes, the 50143 gas valve is compatible with NG and LP systems.
Q2: What is the adjustable pressure range?
➡️ The valve can be adjusted from 3 to 5" WC for fine-tuning gas flow.
Q3: Is this a direct replacement for Honeywell/Resideo VR8304M3103?
➡️ Yes, it directly replaces the VR8304M3103/B valve.
Q4: What voltage does it operate on?
➡️ It operates at 24V AC, 60Hz with 0.7 Amps total current.
Q5: Which H.B. Smith boilers use this valve?
➡️ This valve is used on GB100 series H.B. Smith boilers.
🛒 Shopping Tips
💡 Confirm your boiler model and gas type before ordering.
🔧 Always turn off gas supply before servicing the valve.
⚠️ Inspect related piping and connectors for leaks during replacement.
🛠️ Keep spare valves on hand for older boilers to ensure minimal downtime.
