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Red Chemtrol Schedule 80 pipe nipple, half-inch MNPT threads both ends, four-inch length

Chemtrol

Chemtrol 6529 Schedule 80 pipe nipple 1/2" MNPT x 4" TBE

SKU CH-3EAR-C2VF7

A Schedule 80 Kynar pipe nipple with 1/2" MNPT ends, rated to 360 psi and 280 °F for acids, bases and solvents

  • Chemtrol Kynar PVDF resists acids, bases and solvents
  • Schedule 80 wall rated for 360 psi working pressure
  • Operates from -20 °F to 280 °F for broad temperature range
  • 1/2 inch MNPT threads on both ends for direct connection
  • Four inch overall length suits tight piping runs

Chemtrol 6529 Schedule 80 Nipple

This Chemtrol 6529 pipe nipple is a Schedule 80 fitting made from polyvinylidene fluoride, sold under the Kynar trade name. It suits industrial piping systems that carry acids, bases or solvents. Installers and maintenance crews use it to join two female NPT ports in corrosive fluid lines.

Thermal and pressure rating details

The nipple handles a maximum operating pressure of 360 psi and a maximum operating temperature of 280 degrees F. Its minimum operating temperature is -20 degrees F. The red polyvinylidene body resists chemical attack without adding moving parts, so it runs silently and draws no power.

Build integration and compatibility

The fitting has 1/2 inch male NPT threads on both ends and an overall length of 4 inches. It connects directly to compatible Schedule 80 female threads, requiring no gaskets or special tools beyond standard pipe sealant. It frees up space by eliminating the need for a separate coupling and short pipe section.

Highlights

  • Chemtrol Kynar PVDF resists acids, bases and solvents
  • Schedule 80 wall rated for 360 psi working pressure
  • Operates from -20 °F to 280 °F for broad temperature range
  • 1/2 inch MNPT threads on both ends for direct connection
  • Four inch overall length suits tight piping runs

Specifications

BrandNIBCO

Questions about this item

How do I install the 1/2" MNPT threads on this Schedule 80 nipple without damaging the Kynar material?

Apply PTFE tape or compatible thread sealant to the male NPT threads, hand-tighten, then finish with one to two turns using a strap wrench to avoid over-torquing the polyvinylidene fluoride body.

What maintenance or replacement will this Chemtrol nipple need after exposure to acids and solvents?

Inspect threads and walls periodically for stress cracking or chemical attack; replace the nipple if discoloration, surface crazing, or weeping at the joints appears.

Which limit appears first during continuous service at the 280 °F maximum operating temperature?

The 360 psi pressure rating decreases as temperature rises, so the combined thermal and pressure load typically becomes the governing constraint before the minimum temperature of -20 °F is relevant.

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