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Hexagonal 304 stainless steel reducing coupling with female NPT threads on both ends

Value Brand

Value Brand 2UA87 Reducing Coupling 1 in x 3/4 in FNPT 304 Stainless Steel

SKU CH-ZNR4-SRVH6

A 304 stainless steel reducing coupling joins 1 inch and 3/4 inch pipes with female NPT threads rated to 3000 psi at 100°F

  • Corrosion-resistant 304 stainless steel construction for long service life
  • Class 3000 rating handles up to 3000 psi at 100°F
  • Joins 1 in and 3/4 in pipes with female NPT threads
  • Meets ASTM A182, ANSI/ASME B1.20.1 and ASME B16.11 standards
  • Steam rated to 2500 psi at 350°F for high-temperature systems

304 Stainless Reducing Coupling

This 304 stainless steel reducing coupling joins 1 inch and 3/4 inch pipe sizes using female NPT threads on both ends. It meets ASTM A182 material requirements, ANSI/ASME B1.20.1 thread standards and ASME B16.11 dimensional compliance. The fitting carries a Class 3000 pressure rating for durable service in plumbing and industrial piping systems.

Suits corrosion-resistant piping needs

Builders joining dissimilar pipe diameters in water, oil or gas lines will find the 11 1/2 TPI and 14 TPI threads match standard NPT specifications. The 304 stainless construction resists rust and chemical attack better than carbon steel or brass alternatives. Installers requiring pre-applied sealant or a different alloy should select another fitting.

Class 3000 pressure headroom

Rated to 3000 psi at 100°F and 2500 psi saturated steam at 350°F, the coupling handles high-pressure hydraulic and steam circuits within those limits. Systems exceeding Class 3000 or requiring higher temperature steam service need a heavier-rated fitting. The compact design fits tight spaces where larger flanged reducers cannot be installed.

Highlights

  • Corrosion-resistant 304 stainless steel construction for long service life
  • Class 3000 rating handles up to 3000 psi at 100°F
  • Joins 1 in and 3/4 in pipes with female NPT threads
  • Meets ASTM A182, ANSI/ASME B1.20.1 and ASME B16.11 standards
  • Steam rated to 2500 psi at 350°F for high-temperature systems

Specifications

BrandZORO SELECT

Questions about this item

What thread sealant or tape do I need for the 11 TPI and 14 TPI female NPT threads on this reducing coupling?

Apply PTFE tape or a pipe-thread sealant rated for stainless steel and the system pressure; wrap the male threads clockwise before engaging the 1-inch (11 TPI) and 3/4-inch (14 TPI) sides.

Will this 304 stainless steel reducing coupling resist corrosion when connected to my existing galvanised or brass pipework?

304 stainless steel offers good general corrosion resistance, but direct contact with dissimilar metals such as galvanised steel or brass can create galvanic cells; use dielectric unions or isolate the joint if the fluid is conductive.

How can I verify the coupling is holding pressure after installation?

Pressurise the system to its working pressure — up to 3000 psi at 100 °F or 2500 psi steam at 350 °F — and inspect both female NPT joints for leaks; no weeping confirms a sound seal.

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