TPP Series Fiberglass Penetration Fittings
PCI TPP Series Testable Primary Pass-Thru Fittings create watertight seals where piping passes through containment sump walls. Designed for new construction, they keep primary and secondary piping connections inside the sump for inspection and service.
Built from 100% fiberglass and compatible with double wall containment systems, the TPP Series combines dual integrated test ports with compatibility for RTIIA and LCX piping.
Double Wall Compatible
TPP Series fittings are compatible with double wall containment systems.
Dual Integrated Test Ports
Two built-in test ports provide access for secondary piping testing without a separate test boot, reducing components, installation time, and space requirements.
Connections Inside the Sump
The pass-through design allows primary and secondary piping connections to remain inside the sump, eliminating external pipe joints and keeping connections accessible for inspection and maintenance.
Universal Piping Compatibility
Each TPP model accommodates either RTIIA or LCX piping in its specified size, providing flexibility when selecting fittings for the project.
Angled Pipe Entry
TPP fittings accommodate angled pipe entries up to 10 degrees, giving installers flexibility when aligning piping with sump penetrations.
100% Fiberglass Construction
Corrosion-resistant fiberglass provides strength and a durable alternative to rubber or plastic penetration boots, supporting dependable containment during long-term fuel exposure, including ethanol.
EP2A Epoxy Bonding
PCI’s EP2A two-part epoxy bonds TPP fittings to fiberglass and steel. Its thickened consistency provides gap-filling capability and sag resistance for a secure, permanent connection.
Available Models
Flat-wall configurations include:
- PF-TPP-2F-U2: For 2-inch LCX or 3 × 2-inch RTIIA piping.
- PF-TPP-2F-U3: For 3-inch LCX or 4 × 3-inch RTIIA piping.
UL® 2447 Listed
TPP Series fittings are UL® 2447 Listed for use in applicable containment installations.
Specifications and Installation Resources
Download the product brochure and installation instructions for fitting dimensions, piping compatibility, testing procedures, and bonding requirements.

Standard Features

Long-Term Solution
100% fiberglass construction provides superior strength and ensures the fitting will withstand long-term exposure to all fuels, including ethanol.

Allows for Misalignment
Works with angled pipe entries up to 10° for job site adaptability allowing room for misalignment.

Cost-Effective
PCI’s penetration fittings are the most affordable fiberglass fittings on the market, with a similar cost to rubber or plastic fittings.
Bonding Options

EP2A – Epoxy Bonding
EP2A is two-part epoxy available to bond fiberglass penetration fittings to fiberglass and steel. Due to its thickened consistency, It has great gap filling properties and excellent sag resistance, making it a simple and dependable bonding solution.
Downloads
Regulatory
UL® Listed 2447
California Code of Regulation Title 23, Division 3, Chapter 16, Section 2631 (AB 2481/ California VPH)
State of Florida Department of Environmental Protection Approved / Registered Storage Tank System: EQ-203









