Choosing The Right Fittings For Your Fire Sprinkler System

by | Jun 14, 2023 | News

Fire sprinkler systems rely on a complex network of pipes and fittings to transport pressurized water throughout a building. The right fittings are essential for an effective fire suppression system that meets building codes and fire safety standards.

Fire Pipe Fittings

Fire sprinkler systems use specialized fittings made from materials that can withstand high temperatures and pressures in the event of a fire:

•Threaded fittings – Standard threaded fittings like couplings, tees, elbows, nipples and reducing fittings. Common threads include NPT and BSPT.
•Grooved fittings – Grooved mechanical joints provide a leak-free seal using rubber gaskets and coupling housings.
•Flanged fittings – Flanges connect to mating flanges using bolts to form a rigid pipe joint. Used at pipe branch connections and where pipe sizes change.
•Sprinkler heads – Sprinkler heads activate to release pressurized water when temperatures reach a specific point. Available in pendent, upright, horizontal sidewall and recessed styles.

  • Valves – Valves control the flow of water within the piping system. Options include gate, globe, check and butterfly valves.
    •Drains & test connections – Drains remove trapped air and allow for regular system testing. Test connections monitor system pressure.

Fire sprinkler fittings are commonly made of steel or ductile iron and coated in a thick layer of powder paint or enamel for corrosion resistance. This protective coating helps fittings withstand the high temperatures of a fire for extended periods.

Jianzhi malleable iron pipe fittings

Threaded Pipe Fittings

Threaded fittings allow pipes to be screwed together using tapered threads. Advantages:

  • Inexpensive
  • Quick and easy to install
  • Provide a tight, secure seal
  • Can be reconfigured or adjusted more easily

For fire sprinkler systems, use threaded fittings with pressure ratings from 200 PSI to 600 PSI and temperature ratings up to 250°F. Look for fittings made with black steel, galvanized steel or malleable iron construction.

Choose the proper fitting type, size and material for your specific fire sprinkler system design and installation requirements. Comply with national fire codes as well as your local municipality’s fire code regarding sprinkler system components and installation standards. Work with licensed fire sprinkler contractors to ensure your fire suppression system meets all safety regulations before use.

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