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Short brass pipe nipple with threaded ends

Value Brand

Value Brand 3/4" MNPT x 3" TBE Red Brass Pipe Nipple Sch 40

SKU CH-WNRD-B2E28

Red brass nipple connects 3/4 inch MNPT threads for air, gas, oil, water or steam up to 240 psi at 450 degrees F

  • Handles 240 psi at 450 °F for demanding steam lines
  • Withstands 953 psi at 300 °F for high-pressure steam service
  • Operates from -20 °F to 400 °F across diverse media
  • Seamless red brass construction meets ASTM B43 grade
  • Compatible with Class 150 fittings for air, gas, oil, water, steam

3/4" Red Brass Nipple for Schedule 40 Systems

This 3-inch nipple connects 3/4-inch NPT male threads in air, natural gas, oil, potable water and steam lines. Seamless red brass construction meets ASTM B43 grade and Class 150 fitting compatibility for reliable service in residential and light commercial plumbing. The fitting operates from -20 to 400 degrees F across the stated media.

Pressure and Temperature Performance Under

Rated at 240 psi maximum operating pressure at 450 degrees F and 953 psi steam pressure at 300 degrees F, the nipple maintains integrity during sustained high-temperature steam or fluid flow. Seamless metal pipe construction eliminates weld seams that could weaken under prolonged thermal cycling and pressure variation in constant-duty installations.

Class 150 Fitting Limits and Material Constraints

The Class 150 compatibility defines the pressure-temperature envelope for this 3/4-inch nominal pipe size, limiting use to the stated 240 psi at 450 degrees F ceiling. California Proposition 65 warnings apply because the red brass alloy contains chemicals identified by the state as causing cancer and reproductive harm, a factor for potable water specifiers.

Highlights

  • Handles 240 psi at 450 °F for demanding steam lines
  • Withstands 953 psi at 300 °F for high-pressure steam service
  • Operates from -20 °F to 400 °F across diverse media
  • Seamless red brass construction meets ASTM B43 grade
  • Compatible with Class 150 fittings for air, gas, oil, water, steam

Specifications

BrandZORO SELECT

Questions about this item

Does the 3/4 in MNPT brass nipple add noticeable heat or vibration when steam runs through it at 300 Degrees F?

The red brass nipple is a passive fitting with no moving parts, so it adds no vibration and only conducts the steam temperature already present in the system.

What thread sealant or mating fitting is required for the 3/4 in MNPT ends to seal properly?

Standard NPT thread sealant tape or pipe dope and a matching 3/4 in FNPT fitting are needed to create a leak-tight joint.

Will the 3 in overall length and 1 3/64 in outside diameter fit alongside existing Schedule 40 brass pipe in a repair?

Yes, the nipple matches Schedule 40 dimensions and 3/4 in nominal size, so it threads directly into standard Schedule 40 brass piping.

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