Experience Counts!   Coated Casing Isolators (Model C) Description Typical Application Benefits/Features Specifications Warranty How to Order Typical Specification Resources Related Products Description Coated Casing Isolators are used to electrically separate carrier pipes from the casings through which they pass. PSI polyvinyl chloride coated (PVC) casing isolators are often selected due to their strength and excellent corrosion resistance. An extremely tough and durable heat fused PVC coating is offered on steel casing isolators 4" and larger, with 8" and 12" wide bands. 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" (0.254mm) 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. Typical Application Benefits/Features Low Labor Costs - May Be Installed By One Person Glass Reinforced Polymer Runners Offer Low Coefficient of Friction = 0.1 to 0.6 Glass Reinforced Polymer Runners Offer 18,000 PSI (1,265kg/cm²) Compressive Strength Riser Height May Be Specified For Specific Positioning of Carrier Pipe Within Casing Heavy Duty PVC Inner Liner Provides Protection For Pipe and/or Coating Offers excellent corrosion resistance May be used for long pulls and/or heavy pipe installations Designed to last for the life of the piping system PVC Liner Provides Back-up Isolation Deeply Embossed Flanges Offer Added Strength During Tightening of Flange Bolts Eliminates the Need for Blown Sand or Pea Gravel Available with 8" or 12" bands. Available with 2" wide runners. Material Specifications Band 14 Gauge (0.074"[1.88mm]) hot rolled and pickled mild steel. Flanges of the spacer are deep embossed and the corners are chamfered. Configurations 4" (101.6mm) through 36" (914mm) = 2-piece 36" (914mm) through 48" (1,219mm) = 3-piece 48" (1,219mm) and over = Consult Factory Finish Fusion Bonded PVC Coating Durometer - shore A2 (10 sec.) (ASTM D1706-61T) 80 Max. Operating Temp. (constant) 150°F. (65°C.) Aging Properties Excellent Electrical Properties (ASTM D149-61)(short time 0.010") 1,380 V/mil. Resistance: Sale Spray (ASTM B117) Acids Alkalies   Excellent Good Good Liner Material Polyvinyl Chloride Thickness 0.090" (2.29mm) min. Hardness Durometer "A" 85-90 Dielectric Strength   1/8" (3.18mm) Surge Test   Step-by-Step Test   60,000 V min. 58,000 V min. Water Absorption 1% max. Risers 10 Gauge (0.135mm) steel MIG welded to band. Runners 2" (51mm) wide glass reinforced polymer runners 4" (101.6mm) through 12" (305mm) = 2 top & 2 bottom 14" (356mm) through 36" (914mm) = 2 top & 4 bottom Runner Specifications Tensile Strength, (ASTM D638) 17,600 psi (1,237kg/cm²) Flexural Strength, (ASTM D790) 25,300 psi (1,779kg/cm²) Compression Strength, (ASTM D648) 18,000 psi (1,266kg/cm²) (10% Deformation) Deflection Temp. @ 264 psi, (ASTM D648) 405°F (205°C) Deformation Under Load: @ 122°F (50°C) 2000 lb. load - (ASTM D621) 1.2% Studs, Nuts and Washers Studs = 5/16" - 18 x 2-1/2" plated Hex Nuts = 5/16" Washers = 5/16" SAE 2330 Configurations 8" (203.2mm) Band = 6 studs, 12 nuts and washers 12" (305mm) Band = 8 studs, 16 nuts and washers Warranty All products are warranted against failure caused by manufacturing defects for a period of one year. Any product found to be so defective and returned within one year from date of shipment will be replaced without charge. The above warranty is made in lieu of, and we disclaim, any and all other warranties, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, and buyer agrees to accept the products without any such warranties. We hereby disclaim any obligation or liability for consequential damages, labor costs or any other claims or liabilities of any kind whatsoever. How To Order To order Coated Casing Isolators please indicate the following: Quantity Type Finish Band Width Runner Width Carrier Pipe O.D. (Type and coating thickness if applicable.) Casing Pipe I.D. (Type and coating thickness if applicable.) Carrier Pipe Joint O.D. (if applicable) Carrier Pipe Position within Casing Length of Crossing Contact your local distributor or Pipeline Seal & Insulator, Inc. Click here for more detailed ordering instructions. Distributor Locator Click here for a PDF RFQ Interactive Form/Worksheet Acrobat 8.0 required. A PDF form that may be filled out, resaved and sent as an attachment via e-mail or printed out and fax'ed back to PSI For version 8.0 of Adobe Acrobat visit www.adobe.com Contact PSI Typical Specification Factory made casing isolators/spacers of the following description shall be installed on any carrier pipe passing through a pipe casing. They are designed to protect the carrier pipe corrosion coating and electrically isolate the carrier pipe from the casing. Casing Isolators/spacers shall be PSI Model C8G-2 for carrier pipes up to 24-inch diameters and Model C12G-2 for larger pipe sizes as manufactured by Pipeline Seal and Insulator, Inc., Houston, TX. Casing isolators/spacers shall have a minimum 14 gauge steel band and where required, 10 gauge risers. The band, risers and connecting studs shall be welded and cleaned at the factory before the application of a fluidized bed fusion bonded PVC coating of between 10-16 mils thickness. The PVC coating shall provide good resistance to acids and alkalies and excellent resistance under ASTM B117 salt spray tests. (Epoxy coatings are not an acceptable alternative). The isolators/spacers shall have a flexible PVC inner liner of 0.09 inch thickness with a durometer “A” 85-90 hardness and a minimum 58,000 volt dielectric strength. The runners shall be high pressure molded glass reinforced polymer with a minimum compressive strength of 18,000 psi per ASTM D638. The runners shall be 2.0 inch in width and a minimum of 7.0 inches long for C8G-2 models and 11” for C12G-2 models (polyethylene runners are not an acceptable alternative). The runners shall be attached to the band or riser by 3/8” welded steel studs and lock nuts which shall be recessed far below the wearing surface on the runner. The recess shall be filled with a corrosion inhibiting filler. The band section shall be bolted together with cadmium plated studs, nuts and washers. Quality Assurance Each isolator/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. Considerations The above specification is considered sufficient for most pipe sizes and types up to 36-inches and casing lengths up to 300 feet. For larger size pipes or longer or unusual casings, please contact Pipeline Seal and Insulator, Inc. End Seal Specification After insertion of the carrier pipe in the casing, the ends of the casing shall be closed by installing a PSI Model "C", Model "S", Model "W" or Model "FW" casing end seal as manufactured by Pipeline Seal and Insulator, Inc., Houston, TX. Link-Seal® End Seal Specification (Carrier Pipe Must Centered Within Casing) After insertion of the carrier pipe in the casing, the ends of the casing shall be closed by installing the Link-Seal® end seals and a 1/8" thick synthetic rubber end seal equal to the PSI Model "C" end seal. Both as manufactured by Pipeline Seal and Insulator, Inc., Houston, TX. Disclaimer The foregoing performance data is intended as guideline material only and is based on assumptions of general and reasonable use. Performance suitability for any specific application should be determined by the user. Typical Specification in PDF Format Resources Casing Isolators/Spacers designed specifically for critical energy industry applications - worlwide. An 8 page booklet that includes all PSI casing isolators/spacers (both metallic and non-metallic) that are appropriate for use in the energy industry. PDF File Size = 1,014KB. Casing Isolators/Spacers designed specifically for water and sewer cased pipelines. An 8 page booklet that includes all PSI casing isolators/spacers (both metallic and non-metallic) that are appropriate for use in the water/sewer industry. PDF File Size = 532KB. Related Products End Seals Models "C" (Pull-on), "S" (Standard Pull-on), "W" (Wrap Around) and "FW" (Fire Resistant) Link-Seal® Modular Seals Link-Seal® is an excellent method for enclosing the end of a casing when the pipe is center within the casing. Custom Isolators Multiple carrier spacers are used for inserting different size pipes, conduits and wires into casings.