12640 BECKETT 1/2" MPT INLET X 3/8 MPT NIPPLE OUTLET 90&DEG FUSIBLE TANK

12640 Beckett Firomatic 141TF 1/2" NPT (M) x 3/8" NPT Male/Female Tank Valve

Product Overview

The Beckett 12640 Firomatic 141TF Tank Valve is a premium fusible safety valve designed for residential oil heating systems. Constructed from heavy-duty brass, this valve automatically shuts off at 165°F (74°C) to prevent fuel flow in case of fire or excessive heat, ensuring safety and compliance.

It features a 1/2" MPT inlet and 3/8" MPT nipple outlet (90°), ideal for installation at the bottom outlet of most oil tanks.

✅ Key Features

• ✅ Connection Type: 1/2" MPT inlet x 3/8" MPT nipple outlet (90° angle)

• ✅ Automatic Safety Closure: Fusible element activates at 165°F (74°C)

• ✅ Fuel Compatibility: For kerosene and No. 2 fuel oil systems

• ✅ Heavy-Duty Brass Body: Corrosion-resistant for long service life

• ✅ Easy Installation: Fits standard ½” NPT bottom tank outlets

• ✅ Replaces Older Model: Direct replacement for Beckett 12340

⚙️ Technical Specifications

⚠️ Common Symptoms of a Failing Tank Valve

If your existing tank valve shows any of the following signs, replacement may be needed:

• ⚠️ Fuel leaks or dampness around valve threads

• ⚠️ Hard-to-turn handwheel or valve not closing properly

• ⚠️ Fuel odor near the tank base

• ⚠️ Restricted oil flow to the burner

• ⚠️ Rust, corrosion, or discoloration on valve body

If these symptoms appear, replacing the valve can help restore system safety and prevent potential hazards.

💡 Shopping Tips

• 🛠️ Check Valve Size: Confirm the tank outlet uses a ½” NPT thread before ordering.

• 🧭 Match Your Fuel Type: This valve is approved for No. 2 fuel oil and kerosene—not for gasoline or other fuels.

• 🔥 Verify Temperature Rating: Ensure you’re selecting a valve with 165°F fusible protection, the standard for home heating safety.

• 🔄 Replacement Compatibility: The 12640 replaces older models 12340 and other 141TF configurations.

• 🧰 Installation Tip: Apply fuel-rated thread sealant for a secure, leak-free fit. Always install with valve handle accessible for manual shutoff.

• 🧯 Safety Reminder: Replace any damaged or aging valves immediately to maintain compliance with fire and building codes.

❓ Frequently Asked Questions (FAQ)

Q1: What is the shutoff temperature for the Beckett 12640 valve?
A1: It automatically closes when ambient temperature reaches 165°F (74°C) to prevent fuel flow during a fire.

Q2: Which fuels are compatible with this valve?
A2: The valve is approved for No. 2 fuel oil and kerosene applications only.

Q3: What older valve does this replace?
A3: The Beckett 12640 replaces the Beckett 12340 valve.

Q4: Can this valve be installed vertically or horizontally?
A4: It’s typically installed horizontally at the bottom outlet of the oil tank, but orientation should follow local codes.

Q5: What does “fusible” mean?
A5: It means the valve contains a special plug that melts at 165°F, automatically shutting off oil flow to prevent fire spread.