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Small cylindrical stainless steel union with threaded female ends

Value Brand

Value Brand 3/8 in FNPT 304 Stainless Steel Union Class 150

SKU CH-CBFS-4HVE2

Three-piece stainless steel union joins two 3/8 in FNPT pipes without rotation for easy maintenance, rated 300 psi and 150 psi steam

  • Corrosion-resistant 304 stainless steel construction
  • Three-piece union design enables pipe maintenance without rotation
  • Threaded 3/8 in FNPT connections on both ends
  • Rated 300 psi max pressure and 150 psi steam service
  • Meets ASTM-A-351, ANSI B1.20.1 and MSS-SP-114 standards

Three-Piece Stainless Union

The ZORO SELECT 400U111N038 is a Class 150 union fitting made from 304 stainless steel. Its three-piece construction joins two pipe ends without requiring pipe rotation. The fitting meets ASTM-A-351, ANSI B1.20.1 and MSS-SP-114 standards.

Installers Needing Quick Disassembly

This union suits maintenance points on air, natural gas, oil, potable water, non-potable water and steam lines where occasional separation is required. It is not intended for permanent welded joints or for systems exceeding the rated pressure limits.

Dual 3/8 in FNPT Threads

Both ends carry 3/8 inch female NPT threads with 18 threads per inch. The overall length is 34 mm. Maximum service pressure is 300 psi and steam pressure is limited to 150 psi.

Highlights

  • Corrosion-resistant 304 stainless steel construction
  • Three-piece union design enables pipe maintenance without rotation
  • Threaded 3/8 in FNPT connections on both ends
  • Rated 300 psi max pressure and 150 psi steam service
  • Meets ASTM-A-351, ANSI B1.20.1 and MSS-SP-114 standards

Specifications

BrandZORO SELECT

Questions about this item

How do I install the 3/8 in FNPT union and what step is often missed?

Thread each 3/8 in FNPT end onto the matching pipe using 18 threads per inch; the step often missed is tightening the centre nut after both ends are engaged so the three-piece body draws the seal tight.

What maintenance or replacement will the 304 stainless steel union need later?

The gasket or mating seat inside the three-piece assembly will wear first; replace it when leakage appears at the joint during air, water, oil, natural gas or steam service.

What pressure limit shows up first under sustained steam use?

The 150 psi steam rating is the first limit reached; the fitting is rated 300 psi for other media but only 150 psi for continuous steam per Class 150 and ASTM-A-351.

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