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
Small brass threaded pipe cap with hexagonal body

Value Brand

Value Brand 1/2" Brass Cap FNPT Class 125 200 psi

SKU CH-4QMB-RZQXJ

A 1/2" brass cap with FNPT threads, Class 125 rating and 200 psi pressure limit

  • Solid brass construction resists corrosion for long service life
  • Threaded FNPT design ensures secure leak-free pipe connections
  • Class 125 rating handles 200 psi maximum operating pressure
  • Withstands temperatures from -20 to 400 degrees F for versatile use
  • California Proposition 65 warning for cancer and reproductive harm chemicals

1/2" Brass Cap FNPT Class 125

This 1/2 inch brass cap provides a threaded closure for piping systems rated to Class 125. It suits plumbing installations that require a reliable seal at nominal pipe sizes. The fitting handles a maximum operating pressure of 200 psi across a temperature range from -20 to 400 degrees Fahrenheit. It contains no pre-applied thread sealant and no included seal.

Replaces damaged or missing threaded caps

Use this cap to replace a corroded, cracked or lost brass plug on a 1/2 inch FNPT connection. The upgrade is worth it when the existing fitting leaks or when system pressure testing demands a Class 125 rated component. It restores pressure integrity without changing pipe diameter or thread standard. California Proposition 65 warnings apply due to chemical content.

Simple thread-on installation

Installation requires only hand-tightening followed by a wrench turn on the 1/2 inch FNPT threads. No sealant is pre-applied so the installer must add compatible tape or compound. The most common issue is cross-threading or insufficient sealant leading to weepage at 200 psi. Ensure threads are clean and undamaged before assembly.

How it compares

Measured against everything we stock in Bath Accessories & Soap Dispensers, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 96% of the 1,499 comparable items (median $39.99).

Specifications

Product
Brand nameZORO SELECT
Product typeOther

Questions about this item

What pipe size does the 1/2" FNPT brass cap fit?

The cap threads onto a 1/2 inch nominal pipe size with FNPT threads.

How is the cap installed without the included thread sealant?

Apply PTFE tape or pipe dope to the male threads before tightening the cap to Class 125 specifications.

When should the brass cap be replaced given its pressure and temperature ratings?

Replace the cap if it sees pressure above 200 psi or temperatures beyond the -20 to 400 °F range.

More in Bath Accessories & Soap Dispensers

Similar items