Aluminum 1 1/2" Red Fire Nozzle (NPSH)

Item Number: A15PRD
  • Aluminum 1 1/2" Red Fire Nozzle (NPSH)
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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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Additional Details

Aluminum 1 1/2 inch combination nozzle has the option of a straight stream or fog pattern. NPSH and NPT are more common in industrial applications.

How We Conducted Our Nozzle Testing

We used a Honda self-priming water pump with a two inch inlet and a two inch outlet that produces 135 gallons per minute (GPM). The nozzle was attached to a fifty foot 1 1/2 inch fire hose. The pump pressure was approximately 60 PSI. Gallons per minute was calculated by measuring the number of gallons a nozzle could fill a large container within one minute. The result is the GPM.

Specifications

  • Material: Aluminum
  • Size: 1 1/2 inches
  • Threads: NPSH
  • This nozzle will only connect to a 1 1/2 inch NPSH hose
  • Approximate Gallons Per Minute: 48 gpm
  • Approximate Distance: 60 feet
  • Positions: Fog, straight stream and off
1 1/2" Hose
  • Inside diameter of a male adapter: 1 1/2 inches
  • Outside diameter of a male NH / NST adapter: 2 inches (1.99) - 9 Threads per inch
  • Outside diameter a male NPSH or NPT adapter: 1 7/8 inches (1.87) - 11.5 Threads per inch

1 3/4" Hose Couplings

  • 1 3/4 inch hoses come with 1 1/2 inch couplings

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