We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Brass pipe nipple with threaded ends, 18 inches long

Smith-Cooper

Smith-Cooper 4385013020 1-1/2" MNPT x 18" TBE Brass Pipe Nipple Sch 40 trap

SKU CH-MAT5-4XAD8

A brass pipe nipple with male NPT threads on one end and a threaded-both-ends finish, 18 inches long and Schedule 40 rated

  • ColorTransparent
  • 1-1/2" MNPT threads ensure secure pipe connections
  • 18-inch length provides extended reach for installations
  • Schedule 40 brass construction resists corrosion and pressure
  • Transparent colour allows visual flow inspection
  • Smith-Cooper brand delivers reliable plumbing performance

Brass nipple for plumbing connections

The Smith-Cooper 4385013020 is a 1-1/2 inch male NPT by 18 inch TBE brass pipe nipple built to Schedule 40 dimensions. It serves installers and maintenance teams joining threaded fittings in water, air or gas lines where brass corrosion resistance is required. The transparent finish shows the alloy surface without coating.

Threaded ends integrate with standard fittings

Each end carries 1-1/2 inch male NPT threads so the piece screws directly into couplings, elbows or valves without adapters. The 18 inch length spans fixed offsets between components, reducing the need for multiple shorter nipples and extra joints. Schedule 40 wall thickness handles typical residential and light commercial pressures.

Replaces shorter or corroded nipples

Use this nipple when an existing brass or steel nipple has failed, leaked or proves too short after a re-pipe. The jump is worth it when the 18 inch reach eliminates a coupling pair or when brass material matches the system specification. It does not suit installations needing female threads, compression ends or a different nominal diameter.

Highlights

  • 1-1/2" MNPT threads ensure secure pipe connections
  • 18-inch length provides extended reach for installations
  • Schedule 40 brass construction resists corrosion and pressure
  • Transparent colour allows visual flow inspection
  • Smith-Cooper brand delivers reliable plumbing performance

Specifications

ColorTransparent
BrandSMITH-COOPER

Questions about this item

How long is the 1-1/2" MNPT brass nipple before I hit the thread limit?

The nipple measures 18 inches from end to end, giving you that full length before the male threads engage.

Does the Schedule 40 brass nipple run hot or make noise when water flows all day?

Brass conducts heat but the nipple itself has no moving parts, so it stays silent and only warms to the water temperature.

What size female fitting do I need on site to connect this 1-1/2" MNPT nipple?

You need a 1-1/2 inch female NPT threaded opening — either a coupling, elbow, tee or valve — to accept the male threads.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.