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Black polypropylene straight adapter with 3 inch hose barb and NPT threads, hex head visible

Banjo

Banjo HB300 3 in Barb x NPT Adapter

SKU CH-S111-RFD7H MPN HB300

A 3-inch barb-to-NPT adapter in polypropylene for straight hose connections from -20 to 150 °F

  • Product typeDrain Components
  • Main materialHAWA
  • Product colorBlack
  • Polypropylene construction resists corrosion and chemicals
  • Black finish reduces UV degradation in outdoor use
  • Straight 3 in barb to 3 in NPT connects hose to threaded pipe
  • Hex head sized 3 29/32 in allows secure wrench tightening
  • Operates from -20 to 150 degrees F for seasonal reliability

3 in Barbed x NPT Adapter

The Banjo HB300 connects a three inch hose barb to a matching male NPT thread. It is built for installers who need a straight polypropylene coupling in drainage or fluid transfer lines.

Polypropylene Build and Hex Head

Moulded in black HAWA polypropylene the fitting withstands temperatures from 20 below to 150 degrees Fahrenheit. A 3 29/32 in hex head provides a solid grip for tightening without damaging the barb or thread.

Replaces Thread Only or Clamped Joints

This adapter replaces a plain threaded nipple or a separate clamp assembly where a leak free barbed connection is preferred. The jump is worth it when the system demands reusable polypropylene rather than metal or PVC alternatives.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 84% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameBanjo
Model nameHB300
Product typeDrain Components
Product colorBlack
Size & build
Main materialHAWA

Questions about this item

What thread standard does the 3 in NPT end use and what size hose does it accept?

The adapter has a 3 in male NPT thread on one end and a 3 in hose barb on the other for a 3 in inside-diameter hose.

What are the overall dimensions and hex size needed to tighten this fitting?

The hex head measures 3 29/32 in across flats and the body is straight rigid polypropylene in black.

How do you install the HB300 and what common mistake should be avoided?

Thread the NPT end into the female port using sealant, push the hose onto the barb until seated, then secure with a clamp; do not overtighten the plastic threads.

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