GPT Casing Spacers & End Seal Overview

Coated Steel

PSI polyvinyl chloride coated (PVC) steel casing isolators are often selected due to their strength and excellent corrosion resistance.

An extremely tough and durable heat fused plastic coating is offered on steel casing isolators 4" and larger, with 8" and 12" band widths. The cold formed steel casing isolator band, complete with runner studs installed, is vapor degreased, primed, heated and fusion coated with plastic, providing a minimum .010" (.254 mm) thick coating over the entire band and runner studs. A post cured cycle strengthens the bond and provides an even more uniform coating. Polyvinyl chloride is available as a standard. Other heat fused plastic coatings are also available for custom orders and applications.

The runners are attached with 3/8" diameter studs, which are fusion welded to the band before it is PVC coated. They are recessed far below the wearing surface of the runner. After the runner is anchored to the band, the stud counter-bore is filled to assure a water tight seal for the stud and the lock fastener.

Model Options

• Model C8G-2: Coated Steel casing isolator with an 8" (203 mm) wide steel band and 2" (50.8 mm) wide glass reinforced runners.

• Model C12G-2: Coated Steel casing isolator with a 12" (305 mm) wide steel band and 2" (50.8 mm) wide glass reinforced runners.

Stainless Steel

Tough, heavy duty 14 gauge (0.74" / 1.88 mm) 304 stainless steel isolators/spacers are available for use in highly corrosive environments. They offer maximum corrosion resistance while providing support for large diameter pipe, unusually heavy pipe or for long casing pulls. The flanges of the spacer are deep embossed and the corners are chamfered.

The runners are attached with 3/8" (9.5 mm) diameter studs, which are fusion welded to the band. The studs are recessed far below the wearing surface of the runner and, after the runner is anchored to the band, the stud counter-bore is filled to insure a water tight seal for the stud and the lock fastener.

Model Options

• Model S8G-2: Stainless Steel casing isolator with an 8" (203 mm) wide steel band and 2" (50.8 mm) wide glass reinforced runners.

• Model S12G-2: Stainless Steel casing isolator with a 12" (305 mm) wide steel band and 2" (50.8 mm) wide glass reinforced runners.

• C8 / S8 = 7' (2.1 m) to 10' (3.0 m)

• C12 / S12 = 8' (2.4 m) to 12' (3.7 m)

An isolator/spacer should be placed within 2' (0.6 m) on each side of a coupling or joint and within 1' (0.3 m) of each end of the casing.

Ranger Il, All Non-metallic

An all non-metallic spacer system designed to ease carrier pipe insertion, reduce inventory costs, make installation quick and easy to last for the life of the piping system. Features:

• All non-metallic. No nuts, bolts, washers or any other metal parts to corrode or degrade over time.
• Segmented pieces - small inventory may be used to accommodate a large variety of pipe styles, types and diameters. No extra trips from job site to warehouse for additional parts.
• Easy assembly. Simply slide the segments together and ratchet tight with the patented Slide-Lock connecting system.
• Wide variety of runner heights to allow numerous options for pipe positioning within the casing.
• Manufactured from UV resistant polypropylene.
• No special tools required for installation.
• Accommodates plastic, ductile iron and steel carrier pipe (not suitable for concrete pipe).

Model Options:
For carrier pipe diameters from 0.83" (21 mm) to 37.60" (955 mm) in diameter. 

Typical Installation
Based on 20' (6.1 m) carrier pipe segments in a casing of not more than 300' (91.5 m). Consult CCP for longer casings and for concrete pipe. Typical Specification Casing spacers shall be all non-metallic (polypropylene), molded in segments for field assembly without any special tools. Spacer segments shall be secured around carrier pipe by insertion of a cinching spline. The casing spacer polymer shall contain ultraviolet inhibitors and shall have a minimum compressive strength of 3,000 psi, an 800 Volts/mil dielectric strength and impact strength of 1.5 ft-Ibs/inch. Each casing spacer shall have full length, integrally molded skids extending beyond the bell or mechanical joint of the carrier pipe. Each casing spacer shall be manufactured at a facility that has a Registered ISO 9001:2000 Quality Management System. Copy of current ISO 9001:2000 Registration shall be provided with material submittal. Approved vendor: Corrosion Control Products Company. Recommended Maximum Spacing All Ranger II^® Isolators/Spacers should not exceed 8' (2.4 m) center to center.
An isolator/spacer should be placed within 2' (0.6 m) on each side of a coupling or joint and within 1' (0.3 m) of each end of the casing. For more details on spacing, contact CCP.

Model PE

High density (linear), injection molded virgin polyethylene casing isolators / spacers provide positive insulation, high abrasion resistance and low coefficient of friction for a wide variety of energy industry double containment carrier / casing pipe applications. They are extremely light in weight and easy to handle during installation.

A ribbed inner surface prevents slippage and guards against carrier pipe coating damage while the outer surface may include any one of several molded runners to accommodate 2" (50.8 mm) x 4" (101.6m m) or larger carrier / casing differentials.

One piece solid molded segments provide for maximum load bearing. Hardware includes cadmium plated steel studs, nuts and washers. A screwdriver is the only tool needed for installation.

Model PE Options:

• 3/4" (19 mm) through 12" (305 mm) = 2 segments, T\pop/bottom.

• 14" (356mm) through 48" (1,219mm) and larger = multiple segments.

Model HT

A unique formulation of polymers is used in the manufacture of the Hi-Temp isolators/spacers giving them the capability of being used for applications that may reach 280°F(138°C). A high-temperature plastic liner improves friction with the carrier pipe while protecting it from damage to either pipe or coating.

Typical Installation
Based on 20' (6.0 m) carrier pipe segments in a casing of not more than 300' (91.5 m). Consult CCP for longer casings and for concrete pipe.

Model HT Options

• 3/4" (19 mm) through 12" (305 mm) = 2 segments

• Top/bottom 14" (356 mm) and above = contact CCP for availability.

Recommended Maximum Spacing
All model PE and Hi-Temp Polymer Isolators / Spacers should not exceed 5' (1.5 m) to 8' (2.4 m) center-to-center. An isolator / spacer should be placed within 2' (0.6 m) on each side of a coupling or joint and within 1' (0.3 m) of each end of the casing.

End Seals
    

Individually designed to accommodate custom carrier / casing combinations. Made of 1/8" thick, specially compounded synthetic rubber for long life and easy installation.

Specifically designed for existing installations. Simply remove plastic backing from self-curing rubber and press exposed surfaces together. Available for all carrier/casing differentials.

Made of special synthetic rubber for long life and easy installation, the highly flexible "S"-shaped seal is available for ANSI steel pipe specifications. Band locating ribs are on the outside, with special sealing ribs on the inside under the band to pre-vent leakage.

This model has been developed exclusively for situations involving a need for fire retention. They are applicable to casing through dikes in tank farms, fire walls or wherever a casing may be in a fire prone area.