Casing Insulator & End Seals

 

POLYETHYLENE SPACERS AND INSULATORS - (MODEL CI)

With excellent dielectric resistance and low moisture absorption for minimal electric current loss and no impairment of cathodic protection, polyethylene spacers and insulators are an economical choice for use on all plastic pipe, metal pipe up to 60" in diameter and smaller ductile pipe. Polyethylene casing spacers and insulators are manufactured by injection molding using polyethylene, which provides high impact strength and a low coefficient of friction. Two halves are used to construct the 1" through 12" spacers while 14" and above are multi-segmented. Runner height for polyethylene spacers can be increased to provide clearance for bell and spigot connections. Ideal for most sizes of schedule 40 and schedule 80 PVC, C 900, SDR 21 & 26, Ultra-Rib and more, they are only recommended for use on 12” and smaller ductile iron pipe. Polyethylene casing insulators are recommended for every 5 feet of pipeline. Molded into the inner surface of the casing insulators are grooves which prevent slippage of any carrier pipe coating. Lightweight, economical and easy to install, APS Polyethylene Casing Insulators require only a screwdriver for installation. Do not exceed 35 in-lbs of torque. Sizes are available from 1" through 60" with a standard runner height of 1". Casing Insulators from 1" through 12" are constructed of two halves, 2 PI and 4 PI sections make up 14" and above.

       

STEEL BAND CASING SPACERS & INSULATORS ( MODEL SI)

Carbon steel spacers are available with a thermoplastic powder coating for extra corrosion protection. APS believes that fusion bonded coatings provide the most complete and effective corrosion protection available. While casing spacers are available in a number of sizes, APS is also capable of manufacturing spacers for specific customer requirements. The APS engineering staff has experience with: • Placing multiple carriers within one casing • Positioning thermally insulated pipe without damage to insulation • Centering small carriers within large casings • Positioning gravity sewer to on-grade requirements • Casing spacers for all types and sizes of pipe above 4" Steel Band Casing Insulators are ideal for use with heavy pipe and long casing sections and are recommended for every 6 to 8 feet of pipeline, depending on pipe type. They should be utilized inside casing 2 to 3 times larger than the carrier pipe and are available in two widths: Model SI8 (8" wide) for carrier pipes 4" to 36"; and Model SI12 (12" wide) for carrier pipes above 36" to 120” and larger. The band is constructed of 14 gauge steel coated with 10-15 mils of thermoplastic powder coating, with a standard 90 mil. thick PVC liner.

     

STAINLESS STEEL BAND SPACERS & INSULATORS (MODEL SSI) 

Heavy duty two-piece stainless steel bands serve practically every piping application and should be utilized inside casing that is 2 or 3 sizes larger than the carrier pipe. APS stainless steel band casing spacers are available in two models: the SSI8 model, which is 8” in width and recommended for carrier pipe 4” to 36”; and the SSI12 model, which is 12” in width and is recommended for pipe above 36” to 120” and larger. Stainless steel band spacers are recommended for every 6 to 8 feet of pipeline, depending on pipe type. For larger diameter pipelines and bell and spigot applications, APS spacers are available with runners/ risers to provide an extra margin of safety. The bands are constructed of 14 gauge stainless steel with a standard 0.090” PVC or EPDM liner. Stainless steel spacers are available in grade 304.