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A hexagonal 316 stainless steel coupling with female NPT threads on both ends

Value Brand

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

SKU CH-W7NA-5HCSJ

Joins two 3/4-inch pipes with 316 stainless steel NPT threads rated to 3000 psi at 100°F

  • 316 stainless steel resists corrosion in harsh environments
  • Female NPT threads at 14 TPI ensure leak-tight pipe joints
  • Class 3000 rating handles 3000 psi at 100 °F
  • Meets ASTM A182 material and ASME B16.11 dimensional standards
  • Rated for 2500 psi steam service at 350 °F

Application & Purpose

The Value Brand 3/4-inch FNPT coupling joins two pipes in a straight line for plumbing, process, and high-pressure systems. It suits installers who need corrosion resistance and strength in a continuous flow path. Buyers requiring a different nominal size or a male-threaded connection cannot use this fitting.

Critical Specification

Both ends have female NPT threads cut to 14 threads per inch and meet ANSI/ASME B1.20.1. The 316 stainless steel body conforms to ASTM A182 and the fitting is rated for 3000 psi at 100 degrees Fahrenheit. Steam service is rated at 2500 psi at 350 degrees Fahrenheit per ASME B16.11.

Installation Context

The coupling threads directly onto male NPT pipe ends without adapters, so the surrounding pipework must match the 3/4-inch nominal size and thread standard. Its 316 stainless construction frees the system from concerns about rust in aggressive fluids. California Proposition 65 warnings apply to chemicals present in the product.

How it compares

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

Price $16.99
Typical for this category: the median of 2,955 items is $17.99.

Specifications

Product
Brand nameZORO SELECT

Questions about this item

What does the 3000 psi rating mean when this coupling is installed in a pipe system?

The Class 3000 rating means the coupling withstands up to 3000 psi at 100 °F and up to 2500 psi steam pressure at 350 °F, per ASME B16.11.

How do the NPT threads with 14 threads per inch affect what pipes can connect?

Both ends use 3/4-inch female NPT threads at 14 threads per inch to ANSI/ASME B1.20.1, so they accept matching male NPT pipe or nipples.

What clearance and alignment does this straight coupling need to fit between two pipes?

It joins two pipes in a straight line with female NPT threads on both ends; allow enough space to thread each pipe fully into the coupling.

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