Replacement 2 1/2" NH/NST Brass Swivel Kit

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Regular price Price: $87.38
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Product Status: In Stock

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Shipping Transit Time: 2 to 5 Business Days

Eligible for Express Shipping: Yes

Stock Level Updated: Dec 25, 2024


Item Number: FDCKIT25
Weight: 1.45 lb
  • Watch video to left for instructions
  • Replacement 2 1/2 inch NH / NST Brass Swivel w/ set screw
  • 2 1/2 inch NH Gasket
  • Ball Bearings (50 needed per 2 1/2 inch fitting)
  • FDC Plastic Cap
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Description

Replacement kit for stolen or damaged 2 1/2 inch NH / NST brass FDC intake swivels. These fixtures are commonly found on the exterior of commercial buildings. They are usually labeled FDC (Fire Department Connection) and/or AUTO SPKR (Automatic Sprinkler).

These kits are used when the threaded plugs or debris covers go missing and the brass female swivel fittings the plugs thread into also "disappear". All that is left is a brass stub with a bearing groove (see video above). This kit includes 1 fitting and 1 cover. TWO KITS are often required if both swivels are missing; one for each inlet.

This kit is for one 2 1/2 inch NH/NST threaded fitting; the most common size and thread type in most parts of the country. The male plug that fits this fitting measures 3 1/16 inch (3.068) outside diameter but is called a 2 1/2 inch NH / NST Plug because the outside diameter of a 2 1/2 inch NH fire hose fitting measures 3 1/16 inch (3.068). It is always best to verify thread type with the local fire department as some are only slightly different than "standard". For example New York City, San Francisco and some other locations use a different thread type or size.

This kit does include a plastic FDC debris cover.

Installation Tips: Slip on the swivel and feed the 50 bearings in through the set screw hole in to the bearing raceway. Screw in the set screw. Take a punch and carefully give the set screw slot a pop to mar the slot and make the screw difficult to remove and deter future theft. Insert the rubber gasket into female fitting and seat in rear at the back of the threads. See video above for detailed instructions.

WARNING: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Do not use in connection with drinking water. Wash hands after handling.

Specifications

2 1/2" Male Adapter
  • Inside diameter of a male adapter: 2 1/2 inches
  • Outside diameter of a male NH / NST adapter: 3 1/16 inches (3.06) - 7.5 Threads per inch
  • Outside diameter a male NPSH or NPT adapter: 2 7/8 inches (2.84) - 8 Threads per inch

Help Me Connect

NH / NST: The most common thread type in use by fire departments today is NST or National Standard Thread. NST also goes by the initials NH or National Hose. It can even be referred to as NHT or National Hose Thread but NST or NH is more common these days. NH = NST.

  • The female side of a NH / NST coupling will only connect to a male NH / NST connection
  • The male side of a NH / NST coupling will only connect to a female NH / NST connection

NPSH: National Pipe Straight Hose (NPSH) or Iron Pipe Thread (IPT) has the same threads per inch (TPI) as National Pipe Tapered (NPT) but the thread does not taper. NPSH is a straight thread and seals by a gasket in the female coupling which allows for a swivel, just like NH / NST, which make both ideal for hose couplings.

  • The female side of a NPSH coupling will only connect to a male NPT pipe or a male NPSH connection
  • The male side of a NPSH coupling will only connect to a female NPSH connection
  • It will NOT thread into a female NPT pipe. For example, a male NPSH coupling will NOT thread into a female metal or pvc pipe.

NPT: National Pipe Tapered is common in plumbing and some industrial uses. Sometimes referred to as pipe thread because PVC pipe and schedule 40 pipe are typically threaded in NPT. As its name implies this is a tapered thread so that the outside diameter of the male (ODM) gets smaller towards the end of the fitting and the inside diameter of the female narrows with depth. As the two fittings are threaded together the opposite tapers force thread friction and makes the seal without the use of a gasket.

 

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