12970 Beckett Firomatic B104CFXL Fusible Burner Valve – 3/8" Flare x 1/4" NPT (M), 2-Shank

📝 Product Overview

The Beckett 12970 Firomatic B104CFXL is a fusible inline burner (angle) valve designed for residential and commercial oil heating systems. This valve provides fire safety protection by automatically shutting off the flow of fuel in the event of high temperatures (up to 200°F).

Constructed with high-quality brass, it features a manual handwheel for service use and is UL/ULC 842 listed for compliance with NFPA 31 and CSA B139 codes in North America. It is suitable for kerosene, No.1 & No.2 fuel oil, diesel, and renewable fuels (up to B100/R100).

✅ Key Features

• ✅ 3/8" ODF flare inlet x 1/4" MPT outlet – standard burner connection

• ✅ Max temperature: 200°F – automatic fuel shut-off

• ✅ High-quality brass construction – durable and corrosion-resistant

• ✅ Robust handwheel design – allows manual operation for servicing

• ✅ Approved for multiple fuels – kerosene, No.1 & No.2 fuel oil, B6-B20 biodiesel, diesel, and renewable fuels up to B100/R100

• ✅ UL/ULC Listed (cULus 842) – compliant for US and Canada installations

• ✅ Double-seal washer & O-ring stem seal – ensures leak-free performance

• ✅ Embossed arrow & tag – shows fuel flow direction and model number/date code

📊 Specifications

⚙️ Applications

• Installed at burner inlets for additional fire protection

• Residential and commercial oil-fired heating systems

• Required by NFPA 31 in the US and CSA B139 in Canada

• Protects fuel supply systems from fire or high-temperature conditions

⚠️ Common Symptoms (When Replacement is Needed)

• Fuel does not shut off during high-temperature conditions

• Leaking or worn stem seals or o-rings

• Corrosion or damage to valve body or handwheel

• Non-compliance with NFPA or CSA fire safety codes

❓ Frequently Asked Questions

Q1: What temperature triggers the valve to close?
➡️ The valve automatically shuts off fuel at 200°F to prevent fire hazards.

Q2: Can this valve handle biodiesel or renewable fuels?
➡️ Yes, it is approved for B6-B20 biodiesel and B100/R100 renewable fuels.

Q3: Is this valve UL/ULC certified?
➡️ Yes, it is UL/ULC 842 listed for both the US and Canada.

🛒 Shopping Tips

• ✅ Confirm 3/8" flare x 1/4" MPT connections match your burner inlet before purchase

• ✅ Replace valves showing leakage or worn seals immediately for fire safety

• ✅ Use in combination with other fire safety fusible valves for full protection

• ✅ Check local codes for NFPA 31 and CSA compliance requirements