Three-quarter angle view of a stainless steel straight coupling (equal connector) isolated on a white background.
Direct view looking straight into one end of the coupling, showing the circular opening and internal threads.
Side view of the straight coupling, displaying its full length and symmetrical form on a white background.
Illustrative view of a straight coupling with a quarter section cut away to suggest the internal threaded chamber.
Two identical stainless steel straight couplings placed side-by-side on a white background.
Two short pipe sections inserted into either end of a coupling, demonstrating its assembly and function.

Stainless Steel Threaded Press-Fit Equal Coupling (Straight Connector) & Socket Weld Fittings

Category Tag

  • Precision Straight-Line Connection: Engineered for creating seamless, in-line joins between two pipe ends with perfect alignment and minimal flow restriction.

  • The Foundation of the System: As the fundamental connecting unit in our Threaded Press-Fit system, it embodies the core sealing technology in its simplest, most direct form.

  • Dual-Sealing Simplicity: Applies the patented anaerobic adhesive sealing principle to create a permanent, leak-proof bond in straightforward linear applications.

  • Certified for Long-Term Service: Manufactured as an integral component of the piping system independently certified for a 70-year service life.

  • Full Material & Standard Compliance: Constructed from 304/316L stainless steel, meeting Q/9297288, CECS 423, ASME B16.11, and gas safety standards.

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The Essential Linear Link for Uninterrupted Flow

The Stainless Steel Threaded Press-Fit Equal Coupling is the fundamental building block of a continuous piping system. Designed for reliability in its purest form, this straight connector ensures a perfect, permanent seal where two pipe ends meet in a straight line, forming the reliable backbone of our Threaded Press-Fit System Overview.

 

Engineered for Perfect Alignment and Strength

While seemingly simple, a straight coupling must handle axial forces and ensure perfect internal alignment to avoid turbulence. This coupling is precision-machined to:

  • Maintain Bore Alignment: Guarantee a smooth, continuous internal diameter for optimal flow characteristics and pressure retention.

  • Provide Robust Connection: The design offers sufficient engagement length and material strength to withstand pipeline tension and contraction forces, preventing joint separation.

 

Core Technology: Reliable Sealing in its Most Direct Application

This coupling directly showcases the elegance of our Threaded Press-Fit Technology. Its internal threads are engineered to evenly distribute the anaerobic adhesive. When pressed onto a pipe end, the adhesive cures within the sealed thread chamber, forming the same permanent, multi-barrier seal that defines the system’s 70-Year Service Life Certification—proving that ultimate reliability can be elegantly simple.

Cross-sectional diagram of a straight coupling, showing a pipe inserted from each side. The cutaway reveals the internal threads and the cured anaerobic adhesive forming a continuous, solid sealing barrier in the middle.
The Heart of the Seal: This cross-section shows how the adhesive forms a seamless, solid polymer bridge between two pipe ends, creating a single, leak-proof unit.

Specification Table

Model Nominal Diameter Dimensions(mm) Dimensions(inch)
Z15 DN15 16 0.63
Z20 DN20 20 0.787
Z25 DN25 25.4 1
Z32 DN32 32 1.26
Z40 DN40 40 1.57
Z50 DN50 50.8 2
Z60 DN60 63.5 2.5
Z65 DN65 76.1 3
Z80 DN80 88.9 3.5
Z100 DN100 101.6 4
Z125 DN125 133.3 5.25
Z150 DN150 159 6.26
Z200 DN200 219 8.62

 

Applications

  • Extending straight pipe runs in all types of plumbing and industrial systems.

  • Making repair sections or modifications within an existing pipeline.

  • Connecting pipe spools in prefabricated assemblies for faster on-site installation.

  • Serving as a fundamental component in potable water, gas (where compliant), HVAC, and process piping networks.

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