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NFPA Compliant NH NST Thread Connectors

  • Size: 1.5"/2"/2.5"
  • Material: Aluminum Alloy(A6061)
  • Color: Golden/Black/Silver/Customized
  • Treatment: Anodizing/Chrome Plating
  • Sales Models: Wholesale/OEM/ODM
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  • OEM/ODM

Product Description


Product Overview


The NFPA Compliant NH NST Thread Connectors are precision-engineered couplings designed to ensure secure, leak-free connections in firefighting systems. Compatible with NH (National Hose) and NST (National Standard Thread) fittings, these connectors meet the latest NFPA 1963-2025 standards for safety and performance . Ideal for fire departments, industrial facilities, and emergency responders, they offer reliable connectivity under high-pressure conditions.


Product Name
ANSI Adapter Lead Time 10-30days
Technological Process
Forging Suitable Medium Water/Foam
Working Pressure ≧2.5MPa(360PSI) Package Standard Export Carton
Bursting Pressure 6.0MPa(870PSI) MOQ 10PCS


Features


NH/NST Thread Compatibility

The connectors feature NH male threads and NST female threads, ensuring seamless integration with standard fire hoses, hydrants, and nozzles. The threads are machined to ±0.05 mm tolerance for a tight, vibration-resistant fit .


High-Pressure Resistance

Rated for 2.5 MPa (363 PSI) working pressure and 10 MPa (1,450 PSI) burst pressure, these connectors withstand extreme conditions. The dual O-ring seal design prevents leaks even under dynamic pressure fluctuations .


Corrosion-Resistant Materials

Constructed from marine-grade brass with a nickel-plated finish, the connectors resist rust and chemical degradation. They are tested to 480 hours of salt spray exposure without corrosion .


Easy Installation

The connectors feature a twist-and-lock mechanism for quick, tool-free assembly. A torque indicator ensures proper tightening, reducing the risk of over-tightening or leakage .


Compliance and Certification

These connectors meet NFPA 1963-2025 requirements for thread dimensions, pressure testing, and durability. They also carry UL certification, ensuring compliance with global safety standards .


Applications


Fire Hose Systems: Connect hoses to hydrants, pumps, and nozzles in municipal and industrial firefighting networks.

Emergency Response: Used in portable firefighting equipment, such as skid-mounted pumps and deluge systems.

Industrial Water Systems: Suitable for high-pressure washdowns, cooling systems, and process water lines.

Marine and Offshore: Resistant to saltwater corrosion, ideal for shipboard firefighting and offshore platforms.


FAQ


Q: Are these connectors compatible with both NH and NST threads?

A: Yes, the male NH threads and female NST threads allow cross-compatibility with standard firefighting equipment.

Q: What is the recommended torque for installation?

A: Tighten to 70–90 N·m using a torque wrench to ensure proper sealing without damaging the threads .

Q: Can they be used in freezing temperatures?

A: Yes, the connectors maintain flexibility and seal integrity at temperatures as low as -30°C.

Q: How do I inspect for leaks?

A: Apply a soapy water solution to the connection and pressurize the system. Bubbles indicate leaks, which should be addressed immediately.


CNC Machining

CNC Machining

Assembly

Assembly    

 Finished-Parts Storage

     Finished-Parts Storage                        

|

 Quality Control

Measuring

Measuring

Deburring

Deburring

Testing Equipment

Testing Equipment

 Certifications

ISO9001:2015

ISO9001:2015

INTELLECTUAL PROPERTY MANAGEMENT SYSTEM

INTELLECTUAL PROPERTY MANAGEMENT SYSTEM

CCCF(51)

CCCF(51)

UTILITY MODEL PATENT(53)

UTILITY MODEL PATENT(53)

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