Type #30, #60, #90 Spacers
Localized Corrosion pitting (crevice corrosion) is a common problem on exposed steel pipes. Generally the most severe areas of corrosion occur precisely where the pipe contacts its support. This contact point is a natural collection site for moisture. Moisture plus poor drainage creates an ideal corrosive environment. Left unchecked, corrosive pitting will eventually require replacement of the affected pipe. Replacement is always many more times the cost of preventative or corrective maintenance.
FRP TYPE #30, #60 and #90 SPACERS used with Epoxy Seam Sealer are a cost effective, long term solution to above grade crevice corrosion. The Seam Sealer is used to bond and seal the inside surface of the FRP Spacer to the corresponding pipe surface. Once in place the FRP Spacer provides protection on just that small inaccessible section of pipe that needs it most. It is extremely important to use fiberglass reinforced plastic because its high compressive strength enable it to tolerate the point loading that would cause a non-reinforced plastic material to cold flow and fail.
The FRP Spacers can also be used with Moldable Sealant and Petrolatum Tape when conditions prevent the use of Epoxy Seam Sealer.
Type #120 Spacers
An extremely strong, 120 degree, non-conductive fiberglass reinforced plastic insulation spacer.
- Used by utilities to prevent and/or correct electrical shorts caused when buried steel mains contact each other or are in close proximity.
- The 120 degree peripheral circumference minimizes any possible shielding effect on the pipes’ cathodic protection systems.
- For most applications FRP Spacers offer superior physical properties over other plastics and rubber such as PVC and polyethylene.
- The superior compressive strength of FRP over other non-conductive materials is necessary due to the point loading nature of contact shorts.
- FRP spacers will not cold flow, will not become brittle in cold temperatures and will not soften or distort from heat.
When bonding FRP Spacers to pipe do not use one part construction / industrial adhesives, sealants, or caulks because they do not have appropriate physical properties for this type of application.
Example: Moisture cured urethane construction adhesive
Please contact us if you have questions.