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3/4 inch FNPT 316 stainless steel threaded union, three-piece construction, Class 3000

Value Brand

Value Brand 3/4 in FNPT 316 Stainless Steel Threaded Union Class 3000

SKU CH-GMR7-X2Z00

316 stainless steel threaded union for quick pipe connection and disassembly at up to 2900 psi

  • Corrosion-resistant 316 stainless steel extends service life
  • Three-piece mechanical design enables quick assembly and disassembly
  • Rated 2900 psi at 100°F for high-pressure systems
  • 2500 psi steam rating at 350°F handles high-temperature piping
  • FNPT threaded connection ensures secure pipe joints

3/4 in FNPT Stainless Union

The ZORO SELECT 2UA40 is a 316 stainless steel threaded union built for quick connection and disconnection of two pipe ends. Its three-piece mechanical design with body, nut, and gasket allows straightforward assembly and disassembly in industrial, sanitary, or high-temperature piping systems. The fitting carries a Class 3000 rating and is supplied new.

Pressure-rated three-piece fitting

Rated for 2900 psi at 100°F and 2500 psi steam at 350°F, the union suits high-pressure service within those limits. The FNPT threads mate with matching male pipe threads, so the surrounding pipework must provide compatible NPT connections. The 316 stainless construction resists corrosion, freeing the installer from frequent replacement in aggressive media.

For maintenance-friendly piping

This union suits crews who need repeatable make-and-break access on 3/4 inch NPT lines without cutting pipe. It is not for installations that require welded or flanged joints, nor for systems exceeding the stated pressure and temperature ratings. Buyers needing different thread forms, larger diameters, or alternative alloys should look elsewhere.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $45.99
Pricier than about 80% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

What is the maximum operating pressure at 100°F before the 316 stainless steel union reaches its limit?

The union is rated for 2900 psi at 100°F, which is the maximum operating pressure within specified limits.

How much heat can the 316 stainless steel union handle when carrying steam all day?

It is rated for a maximum steam pressure of 2500 psi at 350°F, so sustained high-temperature steam service stays within that limit.

Which thread standard must the mating pipes already have for this FNPT union to seal?

The union uses FNPT threads, so both pipe ends must be male NPT to make a secure threaded connection.

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