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Double Containment Piping - Asahi/America

Asahi/America has been providing double containment piping systems to meet EPA standards for over 25 years. As the innovator and patent holder of many double containment specialty devices, Asahi/America is best equipped to help engineers and designers fabricate and install double containment piping systems.

Their systems are engineered to protect our eco-system from the dangers of exposed aggressive chemicals. Additionally, the Environmental Protection Agency (EPA) has directed the underground transport of hazardous materials be protected from release into the environment in its Standard 40 CFR, Part 280 & 281. In order to be in compliance, systems must:

  • Have at least Manual Leak Detection for Drainage Systems
  • Have Automated Leak Detection for Pressurized Systems
  • Be Double Contained
  • Have Outer Containment able to retain Media Transport for a minimum of 30 days

Asahi/America has been the industry leader in engineered thermoplastic double contained piping systems for decades. Their systems have been successfully installed with confidence across a broad range of industries. Ranging in sizes from 1x2 to 16x20 and above, choosing Asahi/America provides maximum flexibility in system engineering and design. For the varying requirements of double containment, Asahi/America provides a variety of piping system options.

Key Properties
  • Eco-Friendly

  • Ideal for Hazardous Chemical Transport

  • Dual-Layered Protection

  • Prefabrication Optional

  • Annular Space for Leak Detection

Standard Pipe and Fittings Sizes

Pipe & Fittings: 1/2"x2" - 16"x20"

Products

Poly-Flo® - Advanced PE & PP-R

Asahi/America's newly reengineered Poly-Flo® PP-R and Advanced PE co-extruded double containment piping system offers unique construction saving time and labor on each project. Low cost and easy installation makes Poly-Flo® the ideal system for drainage systems, pressurized transfer lines and industrial applications needing up to 4" carrier pipe.

Available in 1x1-1/2, 2x3 and 4x6 size ranges, Poly-Flo® is design for installations with tights pace constraints, water treatment facilities using multiple chemicals, outside applications, due to UV resistance and systems where thermal expansion & contraction are present . In addition to pipe, the system includes full pressure fittings, drainage fittings, machined fittings and specialty dogbones for all standard size ranges.

Poly-Flo® is available in black PE and euro grey PP-R and operates at 150psi at 68 F. The newly designed system features similar ID, OD and Annular space to the old system while providing cost savings vs fabricated system, uniform construction and higher safety features. The co-extrusion allows Poly-Flo to act like a single wall piping system by offer fewer concerns during expansion and connection and eliminates separation during directional drilling. The SDR design allows for full pressure rating while requiring no special welding clamps during joining. Polyflo can be easily joined using standard welding equipment and does not require special inserts.

Poly-Flo® - Advanced PE & PP-R
Duo-Pro® PP, PVDF, E-CTFE

The premier double containment piping system offered on the market today, Duo-Pro has been successfully installed in Fortune 500 in semiconductor, pharmaceutical and chemical processing industries.

Duo-Pro® offers maximum versatility to meet the unique requirements of each individual application. The mix and match feature allows system designers to specify pipe material and ratings based on media and pressure changes throughout an entire system. Duo-Pro® systems are shipped fully fabricated and ready for installation from component pieces or can be shipped factory prefabricated spools, welded by trained professionals.

Duo-Pro® PP, PVDF, E-CTFE
Chem Prolok® Advanced PE

Chem Prolok® is a custom fabricated containment piping system that is ideal for sodium hypochlorite applications. Fabricated from our Chem Proline® crack resistant polyethylene. It is a cost effective piping solution for sodium hypochlorite, sulfuric, and hydrochloric applications.

Chem Prolok® Advanced PE
Fluid-Lok® HDPE

Fluid-Lok® is an engineered HDPE double wall piping system offering the widest variety of sizes and pressure ratings available on the market. Fluid-Lok® provides a cost effective piping solution with a sound engineering design, created to provide reliable environmental protection.

Fluid-Lok® HDPE
Pro-Lock® - PVC,CPVC

Pro-Lock® systems combine engineering design with cost effective materials. The result is reliable double contained piping systems for a variety of applications. Pro-Lock exceeds the requirements of EPA Standard 40 CFR, Part 280 & 281 for underground transport of hazardous chemicals

 Pro-Lock® - PVC,CPVC
Leak Detection

Designed to meet EPA mandated requirements for automated leak detection for underground pressure systems of hazardous chemicals. Each system is equipped with a multi-faceted monitoring panel, offering state of the art capabilities.

Leak Detection
Closure Coupling

Alternative method of installing Duo-Pro® double contained piping systems. The coupling slips over the outside diameter of the pipe, allowing the carrier to be welded and pressure tested before sealing the containment.

Closure Coupling