4500 Series Tank Sump

In addition to being the only 45” tank sump in the marketplace, the 4500 is also PCI’s most popular and versatile tank sump. Our 4500 Series tank sumps are constructed of 100% fiberglass and offer long-term reliability without deforming or cracking. This provides one sump that works for all single STP applications. Exposure to fuel will never void our warranty.

Universal Base
A rigid 12-sided sump base that can be used on a 42” UST collar, manway, or bung adapter. Smooth flat panels are easy to drill and provide leak-tight sealing surface for penetration fittings. Can be factory cut.

Dual STP System
Accommodates two STP systems with ample room to work.

UL Listed 2447

  • PC4560U Fiberglass Tank Sump
  • PC4540U

Standard Features

TwistLok Access Cover Logo
Twist-Lok Lid

Twist-Lok Access Cover

PCI’s tank sumps come standard with the latest generation of our innovative ‘Twist-Lok’ Access Cover. Constructed from injection molded fiberglass, Twist-Lok lids provide a watertight seal with a quick and easy 12º  turn.

Duo Molded Technology

Duo-Molded Technology

Our fiberglass sumps utilizes Duo-Molded Technology. Using premium raw materials with a high glass content, we create two layers of fiberglass, offering superior strength and fuel resistance.


Our signature ‘Brite-White’ interior reflects light for better visibility and makes identifying leak points easier.

100% Fiberglass

100% high-quality, non-corrosive fiberglass provides long-term reliable containment from fuel exposure without voiding warranty, warping, cracking or becoming brittle.

Epoxy Bonding EP2A

Permanent Bond

We’ve engineered our products to be the most efficient to install without losing any of the water-tight quality. Our two-piece tank and transition sumps are permanently bonded in the field with a single EP2A epoxy pour.

Optional Features

Inspection Port

Inspection Port

Optional 4″ inspection port is available for all Twist-Lok lids. This allows for quick and easy inspection without removing entire cover. Part Number IP4000-1


Part No. Base Height (A) Adjustable Height (B) Overall Height (C)
PC4540U 17″ 0″ – 8″ 30″ – 38″
PC4550U 17″ 0″ – 18″ 30″ – 48″
PC4560U 17″ 0″ – 28″ 30″ – 58″
Options (Example: PC4550U-3B2)
-3B0 Solid Bottom, No Bonding Kit
-3B1 Solid Bottom, E148CM Epoxy Bonding Kit
-3B2 Solid Bottom, E142CM / E148CM Epoxy Kit
-3B3 Solid Bottom, GK-55 Fiberglass Kit
-3B4 Solid Bottom, GK-55 / GK-42 Fiberglass Kit
-3C0 42″ Collar Mount, No Bonding Kit**
-3C2 42″ Collar Mount, E142CM / E148CM Epoxy Kit**
-3C4 42″ Collar Mount, GK-55 / GK-42 Fiberglass Kit**

Optimum lid height is 4″ below manhole cover

*Dimensions are based on Solid Bottom sumps only
**Subtract 1″ if mounting to a 42″ tank collar

4500 Tank Sump Dimensions



UL® Listed 2447

California Code of Regulation Title 23, Division 3, Chapter 16, Section 2631 (AB 2481/ California VPH)

State of Floria Department of Environmental Protection Approved / Registered Storage Tank System: EQ-203

Installation Video