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

Apollo

Apollo PXPAM3425JR 3/4 in. PEX Barb x MPT Adapter Jar 25-Pack

SKU CH-R6WF-B4NG1

A jar of 25 plastic PEX barb-to-male-thread adapters for potable water and hydronic systems, secured with separate crimp or clamp rings

  • 25-pack jar keeps fittings organised for large projects
  • Poly-alloy construction resists corrosion in aggressive water conditions
  • Simple push-to-connect design speeds up installation time
  • Compatible with crimp, clamp and sleeve fastening methods
  • Suitable for potable water and hydronic heating systems

3/4 in. PEX Barb x MPT Adapter Jar

The Apollo PXPAM3425JR supplies 25 plastic PEX barb to male pipe thread adapters in a single jar. They are designed for potable water piping systems and hydronic heating installations. The poly alloy construction resists water conditions that can degrade brass fittings over time. Each adapter accepts copper crimp rings, stainless steel pinch clamps or stainless steel crimp sleeves sold separately.

Replaces brass in aggressive water

Builders working in regions where water quality attacks brass can switch to these poly alloy adapters without changing the rest of the Apollo PEX system. The jump is worth it when brass failures have occurred or when local codes recommend non-metallic fittings for corrosion resistance. They integrate directly with existing Apollo manifolds, valves and tubing. No proprietary tools are required beyond standard PEX crimp or clamp equipment.

Sustained pressure and temperature cycles

Under continuous system pressure the poly alloy body maintains seal integrity without the dezincification risk that affects brass in certain water chemistries. Repeated thermal expansion in hydronic loops does not degrade the barb geometry or thread engagement. The material remains stable across the temperature range typical of residential hot water and heating circuits. Long-term performance depends on correct crimp or clamp installation per the fitting manufacturer’s guidelines.

Highlights

  • 25-pack jar keeps fittings organised for large projects
  • Poly-alloy construction resists corrosion in aggressive water conditions
  • Simple push-to-connect design speeds up installation time
  • Compatible with crimp, clamp and sleeve fastening methods
  • Suitable for potable water and hydronic heating systems

Specifications

BrandAPOLLO

Questions about this item

What size PEX tubing and male pipe thread does the 3/4 in. adapter in the 25-pack connect?

Each adapter joins 3/4 in. PEX tubing to a 3/4 in. male pipe thread for a straight transition.

Which crimp or clamp method is the step people most often skip when installing these poly alloy barb adapters?

After pushing the barb fully onto the tubing, you must secure it with a copper crimp ring, stainless steel pinch clamp, or stainless steel crimp sleeve — omitting this step causes leaks.

When should the poly alloy adapters in the jar be inspected or replaced in a potable water system?

Inspect for cracking or discoloration during any system drain-down; replace any fitting that shows stress fractures or chemical degradation from aggressive water conditions.

Also in this aisle

People compared these

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