IMPORTANT INFORMATION FOLLOW ALL …

1 Co-Flex Double Wall Pipe Installation Instructions IMPORTANT INFORMATION FOLLOW ALL INSTRUCTIONS INTRODUCTION: Co-Flex piping is an environmentally compatible, double wall, flexible piping system designed to be installed in Rockguard; our approved chase conduit. Continuous piping runs connecting tanks and dispensers utilize sumps to contain and protect pipe terminations. This installation guide is to be used by trained and certified installers. Please contact Western Fiberglass for certification INFORMATION . Co-Flex warranty is valid only if installation and testing procedures described within this manual are followed by certified installation personnel. CONTACT US FOR MORE INFORMATION !1555 Copperhill Parkway / Santa Rosa, CA 95403Ph: (800) 688-3375 or (707) 2006 BY WESTERN FIBERGLASS, RIGHTS RESERVED. USE BY WRITTEN PERMISSION 1 of 12Co-Flex piping is currently available in 3", 2", 1 1/2 , 1", 3/4", 1/2" Pipe Diameter (ID)

2 Swivel Fittings System Coax Fitting System- 1 1/2" & 2" Only 3/4" Co-Flex SPC-0075 SMA-7575 SFA-7575 STB-0075 GTT-3836 Use w/Double Wall Only 1" Co-Flex SPC-0100 SMA-1010 SFA-1010 STB-0100 GTT-3836 Use w/Double Wall Only 1 1/2" Co-Flex SPC-0150 SMA-1520 SMA-1515 SCC-1515 STF-1515 CPC-1501 CPA-1520 CTF-1515 CEF-1515 Use w/Single Wall Only SEF-1515 SCC-1520 STB-0150 GCT-3810 GTT-3836 CRA-1515 CCC-1515 CPC-1502 Use w/Double Wall Only DAF-2150 2" Co-Flex SPC-0200 SMA-2020 SMA-2015 SCC-2020 STF-2020 CPC-2001 CPA-2020 CTF-2020 CEF-2020 Use w/Single Wall Only STF-2215 SEF-2020 SRE-2015 SRT-2151 SRT-2152 CRA-2020 CRA-2015 CPC-2002 Use w/Double Wall Only STB-0200 GCT-3811 GTT-3836 3" Co-Flex SPC-0300 SMA-3030 SCC-3030 STF-3030 SRT-3320 Use w/Single Wall Only SRT-3230 STB-0300 GCT-3812 GTT-3836 Use w/Double Wall Only Co-Flex flexible piping system installation and testing procedures are unique.

3 Traditional rigid metal or fiberglass piping procedures do not apply. Please read this manual completely prior to installation. Obey all local regulations and requirements. Western Fiberglass, Inc. is pleased to assist you in your site planning. Forward a copy of your site plan to our office for a prompt, computer generated piping layout and materials print out. SPECIFICATIONS:Compatibility: The Co-Flex piping system shall be UL-971 Listed to be compatible with all current UL tested motor vehicle fuels and blends: 100% ASTM Reference Fuel No. 2 100 % ASTM Reference Fuel C 85% Reference Fuel C 15% MTBE 70% Reference Fuel C 30% Ethanol 85% Reference Fuel C 15% Methanol Piping Applications: Co-Flex double wall piping is intended for underground use only. Co-Flex may be used for the following applications: CONTACT US FOR MORE INFORMATION !1555 Copperhill Parkway / Santa Rosa, CA 95403Ph: (800) 688-3375 or (707) 2006 BY WESTERN FIBERGLASS, RIGHTS RESERVED.

4 USE BY WRITTEN PERMISSION 2 of 12 Pressure System Supply Piping Suction System Supply Piping Tank Vent Piping Stage II Vapor Recovery Piping Remote Fill Lines Terminations: All piping terminations are to be within contained, accessible, sump areas to facilitate testing and inspection after installation. Operating Pressures & Vacuums: Operating pressure should not exceed 75 psi or a vacuum of 29 Mercury. Operating Temperatures: Operating temperatures should not exceed 150 degrees F or 66 degrees C. Bend Radius: The listed bend radius should be followed to prevent cracking, kinking or breaking. Any kinked sections should not be used. Pipe Diameter (ID) Minimum Bend Radius 3" 72" 2" 36" 1 1/2" 24" 1" 18" 3/4" 18" On site air temperature does affect the flexibility during installation, the piping is more pliable when warm.

5 Testing: Primary piping for 3 , 2 , 1 , 1 and shall be capable of maintaining 50 psi for a minimum of one (1) hour. Secondary interstitial space for 3 , 2 , 1 , 1 , shall be capable of maintaining 10 psi for a minimum of one (1) hour. These tests may be performed after installation is complete, but before backfill. Allowed monitoring methods are by Pressure, Vaccum or Interstitial Liquid Level Monitoring (ILLM). Please note: the interstitial space of Co-Flex Piping has a capacity of approx. one (1) fluid ounce per linear foot. Care needs to be taken when pressurizing the secondary, add pressure slowly and do not exceed 10 psi during pressurization process. Always use safe procedures when pressure testing piping systems. Western Fiberglass, Inc. assumes no liability or responsibility for testing procedures. CONTACT US FOR MORE INFORMATION !1555 Copperhill Parkway / Santa Rosa, CA 95403Ph: (800) 688-3375 or (707) 2006 BY WESTERN FIBERGLASS, RIGHTS RESERVED.

6 USE BY WRITTEN PERMISSION 3 of 12 Assembly: Co-Flex Co-Flex double wall piping may only be installed within Rockguard(PI4531) using Western Fiberglass tools and fittings. Failure to do so may result in product failure and/or a void in system warranty. Burial Requirements: Co-Flex requires proper burial procedures to ensure product durability. Please be sure to FOLLOW all trenching, backfill materials and burial depth requirements. PLEASE NOTE: Co-Flex double wall piping is intended for installation in normal soil applications. Storage & Transit: Co-Flex double wall pipe and fittings are not intended for storage or transport in direct sunlight or excessive temperatures. Mishandling during transport may cause product damage or result in leaks. Please be sure to inspect all materials prior to installation. Any product determined to have been damaged may not be used. Please see product technical data for additional INFORMATION .

7 PIPING ROUTE DESIGN:Flexible piping system routes and excavation requirements are quite different than for traditional ridged pipe. Direction changes are made with sweeps rather than 90 s or 45 s. In most installations, pipe trenching requirements are reduced. Series system type piping runs are continuous, with the piping originating from one sump and passing through additional sumps until termination. CONTACT US FOR MORE INFORMATION !1555 Copperhill Parkway / Santa Rosa, CA 95403Ph: (800) 688-3375 or (707) 2006 BY WESTERN FIBERGLASS, RIGHTS RESERVED. USE BY WRITTEN PERMISSION 4 of 12 Series routing is most desirable for pressure systems. The piping system runs from the tank sump to each successive dispenser. All piping terminations are to be within enclosed sump areas, not direct buried. Single and/or dual pipe lines can be installed to accommodate any total number of product dispensers. Note: 1 1/2 Co-Flex piping is typically suitable for continuous operation of up to six (6) product dispenser nozzles.

8 Suction system routing requires direct runs where each dispenser is connected to the tank sump via it s own pipe line. Co-Flex flexible piping must be installed in our approved chase conduit -4 Rockguard (PI4531). After installation of conduit, the flexible pipe is pulled through the conduit by threading a cap with an I bolt to the pipe termination and attaching a rope or cord. PIPING TRENCHES:Trenches should be at least twice the width of all piping and/or conduits to be installed within. One pipe diameter spacing between each pipe run is required. Piping systems requiring fall should have a minimum of 1% or 1/8 per linear foot from pipe run termination point back to the tank sump(s). The recommended backfill and trench bed material is rounded pea gravel 1/8 to 3/4 in diameter. Crushed stone, 1/8 to 3/4 , and \ or river sand may be used if washed and it is free flowing. A 6 bed of recommended backfill material, free from any debris, is placed in the piping trench prior to installation.

9 CONTACT US FOR MORE INFORMATION !1555 Copperhill Parkway / Santa Rosa, CA 95403Ph: (800) 688-3375 or (707) 2006 BY WESTERN FIBERGLASS, RIGHTS RESERVED. USE BY WRITTEN PERMISSION 5 of 12 Co-Flex piping installed under reinforced concrete surfaces of a minimum of 4 (100mm) thickness require a minimum cover of 6 (150 mm) of the recommended backfill material. Asphalt, 2 (50mm) minimum thickness, requires 6 (150mm) minimum cover of the recommended backfill material. Unpaved surfaces require a minimum of 14 (350mm) cover of recommended backfill material. After pressure testing is complete, care must be taken to insure even distribution and packing of the backfill material around the piping during the back fill process. Hand shovel material around and over piping to insure correct spacing is maintained. Backfill slowly. Additional care should be taken when initially filling the piping system to insure that all air is removed from the product piping prior to starting any pumps to prevent damage.

10 Be certain that the operating pressure of the pumping system does not exceed the maximum operating pressure of the Co-Flex piping of 75 psi. Periodic testing of both the primary and secondary sections of the Co-Flex system may be performed at any time after installation. Please see installation instructions for DMA, dispenser mounting assemblies, and Western Fiberglass, Inc. tank sumps for details on piping penetrations. CONTACT US FOR MORE INFORMATION !1555 Copperhill Parkway / Santa Rosa, CA 95403Ph: (800) 688-3375 or (707) 2006 BY WESTERN FIBERGLASS, RIGHTS RESERVED. USE BY WRITTEN PERMISSION 6 of 12 MEASURING PIPE RUNS:Co-Flex piping is available in 250 , 500 or 1000 lengths. It may be ordered by the foot if required. The greatest care is taken after manufacture to package and ship your piping to insure against damage. Do not drag Co-Flex along the ground, step or place heavy objects on top of the pipe. Cold weather will affect the flexibility.