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Black elastomeric tee fitting with smooth matte finish

Nomaco Kflex

Nomaco Kflex 801-T-048138 1-3/8" x 37/64" Elastomeric Tee Trap

SKU CH-CG7N-EJF8A MPN 801-T-048138

Elastomeric tee fitting insulates 1-3/8 in. tube with closed-cell NBR/PVC foam rated to 220 °F and UL 94 flame spread 25

  • TypeDrain Components
  • ColorBlack
  • Operates down to –297 °F for extreme cold systems
  • Withstands 220 °F continuous heat without degradation
  • R-value 3.1 reduces thermal loss on 1 in pipe
  • UL 94 rated with flame spread index 25 for plenum safety
  • Antimicrobial closed-cell NBR/PVC resists mould and fire

Elastomeric Tee for 1-3/8" Tubing

The Nomaco Kflex 801-T-048138 is a black elastomeric tee fitting designed to join three sections of 1-3/8 inch outside diameter tubing. It is built for HVAC and plumbing professionals who need a flexible, closed-cell insulation piece that installs without slitting. The NBR/PVC material provides antimicrobial and flame-retardant protection in a single component.

Plenum Rated to UL 94 with 25 Flame Spread

This fitting carries a plenum rating and meets UL 94 requirements with a flame spread index of 25. That certification is the single specification that determines whether the part satisfies commercial building codes for air-handling spaces. Without it, the tee cannot be used in plenum applications regardless of its thermal performance.

R-Value 3.1 from -297 to 220 Degrees F

The closed-cell foam delivers an R-value of 3.1 across a continuous operating range of -297 to 220 degrees Fahrenheit. That capacity handles most refrigeration and heating lines with comfortable headroom. The material reaches its limit beyond the stated temperature extremes or where a higher R-value is specified by design.

Highlights

  • Operates down to –297 °F for extreme cold systems
  • Withstands 220 °F continuous heat without degradation
  • R-value 3.1 reduces thermal loss on 1 in pipe
  • UL 94 rated with flame spread index 25 for plenum safety
  • Antimicrobial closed-cell NBR/PVC resists mould and fire

Specifications

TypeDrain Components
ColorBlack
BrandNomaco Kflex
Model801-T-048138

Questions about this item

What does the R-value of 3.1 mean once this tee is installed on a pipe?

The R-value of 3.1 indicates the thermal resistance of the NBR/PVC elastomeric foam, reducing heat loss or gain on the 1-3/8 inch tube at operating temperatures between -297 and 220 degrees F.

Which standard does the UL 94 rating cover for this elastomeric fitting?

UL 94 confirms the material meets a flame spread index of 25 and is rated plenum rated, so it self-extinguishes and limits smoke in air-handling spaces.

What pipe size and wall thickness does this tee require to fit correctly?

The tee is sized for a 1 inch pipe with a 1-3/8 inch outside diameter and has a 1/2 inch wall thickness, supplied unslit for a closed-cell seal.

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