12640 FIROMATIC Mpt Inlet Nipple Outlet Fusible Tank Valve

Review FIROMATIC 1/2 Inch Mpt Inlet 3/8 Nipple Outlet Fusible Tank Valve

The Firomatic 12640 1/2 MPT Inlet 3/8 Nipple Outlet 90 Degree Fusible Tank Valve is a crucial safety component designed for use in fuel systems, particularly in applications where temperature fluctuations may pose a risk of tank rupture. This valve is engineered to automatically open when the fuel tank temperature reaches a certain threshold, thereby preventing potential catastrophic consequences.

The valve body is constructed from high-quality brass, ensuring durability and resistance to corrosion. The inlet connection features a 1/2 MPT thread, providing a secure and efficient means of attachment to the fuel tank. The outlet connection, on the other hand, boasts a 3/8 Nipple thread, accommodating various fuel lines with ease. The valve's design allows for a 90-degree angle between the inlet and outlet, saving valuable installation space in tight areas.

The most notable feature of the Firomatic 12640 is its fusible element. This element is designed to melt at a specific temperature, triggering the valve to open. The fusible alloy composition and melting point are carefully selected to ensure optimal performance under various fuel system conditions. Once the valve opens, it allows fuel to escape, preventing the tank from overheating and potentially rupturing.

The Firomatic 12640 is not only an essential safety device for fuel systems, but it also offers ease of installation. The valve is designed to be compatible with a wide range of fuel types, including diesel and gasoline, making it a versatile option for various applications. Additionally, its compact design and robust construction make it a reliable addition to any fuel system setup.

In summary, the Firomatic 12640 1/2 MPT Inlet 3/8 Nipple Outlet 90 Degree Fusible Tank Valve is a critical safety component that ensures the safe operation of fuel systems by preventing tank ruptures caused by excessive temperatures. Its high-quality construction, versatile thread configurations, and easy installation make it an excellent choice for various applications.

Fusible tank valves, such as the Firomatic 12640 1/2 MPT inlet 3/8 Nipple outlet 90 degree model, are essential safety components in various heating systems. These valves are designed to prevent overheating and potential damage to the system. Here are some pros and cons of purchasing this specific model:

1. Safety feature: The primary function of a fusible tank valve is to protect the heating system from overheating and potential damage. The Firomatic 12640 model is designed to melt and open when the temperature reaches a certain point, releasing pressure and preventing further damage.

2. Compatibility: This valve is compatible with various heating systems, including oil and antifreeze systems. The MPT inlet and Nipple outlet make it easy to install and connect to the system.

3. Durability: Firomatic is a well-known brand in the heating industry, and their products are known for their durability and reliability. The Firomatic 12640 model is no exception, and it is built to withstand the rigors of constant use in a heating system.

4. Easy installation: The valve's 90-degree outlet and the MPT inlet make it easy to install in confined spaces, and the 3/8 Nipple outlet is a standard size, making it easy to find replacement parts if needed.

1. Cost: Compared to other valves, fusible tank valves can be more expensive. The Firomatic 12640 model is no exception, and it may require a larger investment upfront.

2. Limited lifespan: While fusible tank valves are designed to last, they do have a limited lifespan. Over time, the wax inside the valve can wear down, and the valve may need to be replaced.

3. Maintenance: Fusible tank valves require regular maintenance to ensure they are functioning correctly. This can include checking the temperature rating of the valve and ensuring it is in the correct position.

The Firomatic 12640 1/2 MPT inlet 3/8 Nipple outlet 90-degree fusible tank valve is an essential safety component for various heating systems. While it may require a larger upfront investment and regular maintenance, the peace of mind it provides by protecting the system from overheating makes it a worthwhile investment. Additionally, its compatibility with various heating systems, durability, and easy installation make it a solid choice for those in need of a fusible tank valve.

Details:

Fully guaranteed. 12640 Firomatic 1/2 mpt inlet x 3/8 nipple outlet 90 fusible tank valve. Some items may have slight cosmetic wear which is noted in the condition of part and can be seen pictures. New - old stock inventory item comes as shown and only includes what is in the photos, please look over carefully prior to purchase.

specifications compressorshow:

• brand: Firomatic
• mpn: 12640
• part type: Valve Outlet Tank

offer compressorshow:

• best offers: true
• availability: in stock
• options: ship-to-home
• in stock #: 5
• sold #: 12
• prices: $17.99–$59.97
• item condition:
  • Used
  • New
  • New – Open box
• started: september 16, 2025

seller compressorshow:

• city: kansas city, missouri
• rating: 100.0%
• # reviews: 1818

payments compressorshow:

• other
• wallet: apple-pay
• credit card: mastercard

returns compressorshow:

• time: 30 days
• policy: returns accepted
• paid by: seller
• method: money back

general compressorshow:

• category: Business & Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Blowers > Air Compressors

shipping compressorshow:

• class: standard
• transit: 3-7 days
• service: usps ground advantage
• type: calculated
• carrier: usps