12340 Beckett Firomatic 141TF 1/2" NPT (M) x 3/8" NPT Tank Valve
📝 Product Overview
The Beckett 12340 Firomatic 141TF is a 1/2" MPT x 3/8" MPT fusible tank valve designed for residential oil tanks. Constructed from high-quality brass, it automatically shuts off fuel flow in case of fire, reducing potential damage. The valve features a 90° male/female outlet and comes with a male nipple for easy installation.
This valve is suitable for No. 2 fuel oil, kerosene, and up to 20% biodiesel blend. It replaces Beckett 12640 and meets UL/ULC 842 standards for fire safety.
✅ Key Features
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✅ 1/2" MPT inlet x 3/8" MPT nipple outlet with 90° orientation
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✅ High-quality brass construction for durability and long service life
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✅ Fusible tank valve designed to automatically shut off fuel in case of fire
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✅ Double seal washer/O-ring system with Viton equivalent materials
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✅ Heavy-duty bronze casting
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✅ Includes male nipple for quick and proper installation
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✅ UL/ULC 842 listed for fire safety compliance
📊 Specifications
| Feature | Details |
|---|
| Part Number |
12340 |
| Brand |
Beckett |
| Type |
Fusible Tank Valve |
| Inlet Size |
1/2" MPT |
| Outlet Size |
3/8" MPT Nipple, 90° |
| Material |
Brass / Bronze |
| Seal Material |
Viton® Equivalent |
| Applications |
Residential oil tank bottom outlet |
| Replaces |
Beckett 12640 |
| Fuel Compatibility |
No. 2 fuel oil, kerosene, up to 20% biodiesel blend |
| Safety Listings |
UL/ULC 842 |
⚙️ Applications
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Provides fire safety protection at residential oil tank outlets
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Suitable for replacement of worn or damaged tank valves
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Compatible with most ½" NPT residential tank bottom outlets
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Ensures code compliance with NFPA 31
⚠️ Common Symptoms (When Replacement is Needed)
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Oil continues to flow during high heat or fire conditions
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Leaking at tank outlet
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Worn or cracked O-rings or washers
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Corrosion or damage to the brass/bronze valve body
❓ Frequently Asked Questions
Q1: Where is this valve installed?
➡️ At the ½” NPT bottom outlet of residential oil tanks for fire safety.
Q2: What fuels are compatible?
➡️ No. 2 fuel oil, kerosene, and up to 20% biodiesel blend.
Q3: Does this valve meet fire safety standards?
➡️ Yes, it is UL/ULC 842 listed and meets NFPA 31 code requirements.
🛒 Shopping Tips
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✅ Verify your tank has a ½" NPT bottom outlet before ordering
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✅ Inspect the existing valve for leaks or wear before replacement
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✅ Ensure installation follows flow direction embossed on valve
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✅ Always check that your installation complies with NFPA 31 and local codes
