3/4 inch Carbon Steel 400G Gas Press Coupling with Stop Press x Press

3/4" Carbon Steel Press Coupling with Stop – Engineered for Secure and Efficient Press Connections

This 3/4" press coupling with stop from Apollo PowerPress is designed for use in carbon steel piping systems requiring secure, flame-free mechanical connections. Manufactured from zinc-plated carbon steel and equipped with a pre-installed EPDM sealing element, this coupling delivers consistent, leak-free performance in approved non-potable systems.

The integrated stop feature ensures precise pipe alignment during assembly, minimizing installation errors and improving press reliability. This coupling is compatible with standard press tools featuring approved profiles (such as the V-profile) and is intended for use in hydronic heating, chilled water, compressed air, and inert gas systems.

Product Highlights

• Material: ASTM A284 Grade D carbon steel with zinc-plated finish
• Sealing Element: Factory-installed EPDM O-ring, suitable for water and inert gas applications
• Size: 3/4 inch nominal
• Connection Type: Press x Press with internal stop
• Pressure Rating: Up to 200 psi for water systems; up to 125 psi for air/gas (dependent on system design)
• Temperature Range: 0°F to 250°F (with EPDM seal)

Application Scope

Engineered for commercial and industrial systems, this coupling is approved for use in:

• Closed-loop hydronic heating and chilled water systems
• Compressed air and inert gas lines
• Low-pressure steam and vacuum systems where approved

Installation Notes

This fitting is designed for use with schedule 5 to schedule 40 carbon steel pipe. All cut pipe ends should be clean, deburred, and marked for insertion depth. Use only approved press tools with compatible jaws (per manufacturer specifications). Ensure seals are properly seated before pressing. The stop feature assists in achieving proper pipe alignment, reducing installation variance and mechanical stress on joints.

Compliance & Standards

• NSF/ANSI 372 – Lead-free compliance (where applicable)
• ASSE 1055 – Mechanical press connection fittings
• UL listed and FM approved for select system types

Important Considerations

This coupling is not intended for use in potable water applications unless otherwise specified with an appropriate sealing element. EPDM is incompatible with petroleum-based media. For fuel gas systems, use nitrile (HNBR) seals and verify product certification for the intended media.

The Apollo PowerPress 3/4" Carbon Steel Press Coupling with Stop offers a reliable, mechanical joining solution that helps contractors meet tight timelines while ensuring joint integrity. Its robust construction and precise design make it a dependable choice for demanding mechanical and process piping systems.