The 4800 Series fiberglass tank sump is the largest piping sump in the industry. Designed to accommodate dual STP systems for all types of installations including collar mount, bung mount and manways.

Universal Base
Collar mount, solid bottom and universal bottom bases are available for all three types of installations – collar mount, bung mount and manways. Can be factory cut.

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

58” Diameter Riser
Widest riser in the industry provides ample room for installation and service work.

UL Listed 2447

  • PC4872U
  • PC4840U

Standard Features

100% Fiberglass

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

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.

TwistLok Access Cover Logo

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.


Part No. Base Height (A) Adjustable Height (B) Overall Height (C)
PC4840U 19″ 0″ – 8″ 32″ – 40″
PC4852U 32″ 0″ – 8″ 44″ – 52″
PC4860U 19″ 0″ – 28″ 32″ – 60″
PC4872U 32″ 0″ – 28″ 44″ – 72″
Options (Example: PC4852U-3B1)
-3B0 Solid Bottom, No Bonding Kit
-3B1 Solid Bottom, E148CM Epoxy Kit
-3B2 Solid Bottom, (x2) E148CM Epoxy Kit
-3C0 42″ Collar Mount, No Bonding Kit**
-3C2 42″ Collar Mount, (x2) E148CM Epoxy Kit**
-3D0 48″ Collar Mount, No Bonding Kit***
-3D2 48″ Collar Mount, (x2) E148CM Epoxy 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
***Subtract 2.5” if mounting to a 48” tank collar



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