Female 4 1/2" Dry Hydrant Adapter

  • Female 4 1/2" Dry Hydrant Adapter
1 8
Price: $439.09
$0.00 $439.09
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Stock Level: 0

Product Status: Special Order

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Shipping Cost: Free Shipping

Shipping Transit Time: 2 to 5 Business Days

Eligible for Express Shipping: No

Stock Level Updated: Dec 22, 2024


Item Number: DHF456P
Weight: 15.0 lb
  • Dry Hydrant Type: Swivel 4 1/2 inch Female
  • Threads: NH / NST
  • Material: Aluminum and PVC
  • PVC Size: 6 inches
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Description

Female red dry hydrant adapter with aluminum NH/NST plug. Comes attached to a PVC slip-socket adapter for glue-on connection to straight 6 inch schedule 40 PVC pipe. Material is light-weight 6061-T6 aluminum alloy. All parts meet or exceed NFPA requirements. Our dry hydrant adapters fit all firefighting requirements as well as those for rural dry hydrant systems. Includes screen, plug, and chain.

Dry hydrant sizes are determined by your local fire department. Please contact your local fire department before purchasing.

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Specifications

4 1/2” Male Adapter
  • Inside diameter of a male adapter: 4 1/2 inches
  • Outside diameter of a male NH / NST adapter: 5 3/4 inches (5.76) - 4 Threads per inch
  • Outside diameter a male NPSH or NPT adapter: 5 inches (4.97) - 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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