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Navigating Fire Hose Threadings

Posted by Aaron Gowaski on May 9th 2024

Navigating Fire Hose Threadings

 When it comes to firefighting equipment, every component plays a crucial role in ensuring the safety of both firefighters and civilians. Among these components, fire hose threadings stand out as one of the fundamental elements. Understanding the different types of fire hose threadings is essential for effective firefighting operations. In this guide, we'll explore the various types of fire hose threadings, their applications, and how they contribute to firefighting efforts.

  1. National Standard Thread (NST) or National Pipe Straight Hose (NPSH):
    • NST, also known as NPSH, is one of the most common threadings used in firefighting equipment.
    • It features straight threads with a 60° thread angle and a sealing surface.
    • NST fittings are often used in the United States and Canada for fire hoses and hydrants.
    • These threadings provide a tight seal and are relatively easy to connect and disconnect.
  2. National Pipe Thread (NPT):
    • NPT threadings are tapered, with a 60° thread angle, and commonly used for pipes and fittings.
    • While not as prevalent in firefighting equipment as NST/NPSH, NPT threadings can be found in certain applications, such as hose connections to pumps or valves.
    • They require the use of thread sealant to prevent leaks and ensure a secure connection.
  3. British Instantaneous Coupling (BIC):
    • BIC threadings are widely used in the United Kingdom and other countries following British standards.
    • They feature symmetrical threads with a 55° thread angle and are designed for rapid coupling and uncoupling.
    • BIC fittings are often used in firefighting operations where speed and efficiency are paramount, such as in high-pressure hose connections.
  4. Storz Coupling:
    • Storz threadings, originating from Germany, are symmetrical with a 45° thread angle and a unique bayonet-style locking mechanism.
    • These threadings provide a secure connection that is resistant to vibration and can withstand high pressures.
    • Storz couplings are popular in Europe and other regions for both firefighting and industrial applications due to their reliability and ease of use.
  5. Camlock Coupling:
    • Camlock threadings feature a cam mechanism that locks two pieces together securely.
    • They are often used in industrial settings but can also be found in firefighting equipment, especially for quick

Fire hose threadings are integral components of firefighting equipment, facilitating the rapid deployment and efficient operation of hoses, pumps, and other apparatus. Understanding the different types of threadings, such as NST/NPSH, NPT, BIC, Storz, and Camlock, is essential for firefighters and emergency responders to ensure compatibility and effectiveness during firefighting operations. By selecting the appropriate threadings and maintaining equipment properly, firefighting teams can enhance their ability to respond to emergencies and protect lives and property.