Model PE - Non-Metallic Casing Spacers

Model PE - Non-Metallic Casing Spacers

Description

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 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" (50.8mm) x 4" (101.6mm) 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 Casing Isolators are designed primarily for smaller diameter steel or polyethylene carrier pipes (ANSI O.D. pipe without a bell or mechanical joint). We do not recommend that they be used on any carrier pipe over 24" in diameter or for installations over 300 feet long without consulting with PSI. PE Isolators should not be used on concrete carrier pipe.

Typical Application for Model PE Casing Spacers



Typical Installation
Based on 20-feet (6.0-meters) carrier pipe segments in a casing of not more than 300-feet (91.5-meters) . Consult PSI for longer casings and for concrete pipe.

Recommended Maximum Spacing
All Model PE Isolator/Spacers should not exceed 5-feet (1.5-meters) to 8-feet (2.4-meters) center-to-center. An isolator/spacer should be placed within 2-feet (0.6-meters) on each side of a coupling or joint and within 1-foot (0.3-meters) of each end of the casing.

Benefits/Features of Model PE Casing Spacers

  • 5" (127mm) wide band for maximum hoop strength around carrier pipe.
  • Ribbed inner surface prevents slippage and guards against coating damage.
  • Molded from virgin polyethylene material.
  • Lightweight for ease of handling and installation.
  • Screwdriver is only tool needed for installation.
  • Model available with non-metallic hardware.  
  • High-temp model available (up to 12" [305mm]) for service termperatures to 280-degrees F. (138-degrees C.).  
  • Eliminates the Need for Blown Sand or Pea Gravel
 

Material Specifications for Model PE Casing Spacers

 

SPECIFICATION

ASTM TEST

VALUE

Material

  

Injection Molded Virgin Polyethylene

Tensile Strength

D638, D651

3,100 - 5,500 psi
(218 - 387 kg/cm²)

Compressive Strength

D693

3,200 psi
(225kg/cm²)

Water Absorption

D570

0.1%

Temperature

 

180° F. Max. (82° C.)

Impact Strength

D256

1.5 - 2.0 ft lb/in.
(0.8 - 1.07 newton-meter/cm)

Dielectric Strength

D149

450 Volts/Mil.

Color

 

Natural


Liner
None

Runners
3/4" (19mm) through 12" (305mm) = 2-piece with molded-in runners.
14" (356mm) and larger = Multiple segments with molded-in runners.

Hardware
Metallic - Bolts and Square Nuts = Plated Steel


NOTE:
Model PE Casing Isolators are designed primarily for smaller diameter steel or polyethylene carrier pipes (ANSI O.D. pipe without a bell or mechanical joint). We do not recommend that they be used on any carrier pipe over 24" in diameter or for installations over 300 feet long without consulting with PSI. PE Isolators should not be used on concrete carrier pipe.

 

How To Order Model PE Casing Spacers

  1. Quantity
  2. Model Number = (PE)
  3. Carrier Pipe O.D. (Type and coating thickness if applicable.)
  4. Casing Pipe I.D. (Type and coating thickness if applicable.)
  5. Casing O.D.
  6. Contact your local distributor or Pipeline Seal & Insulator, Inc.

Typical Specifications for Model PE Casing Spacers

Casing isolators/spacers shall be PSI Model PE molded from high density polyethylene plastic in two segments for applications on carrier pipe diameters of 12" and under. Model PE isolator/spacers will be provided in multiple segments for applications on carrier pipe diameters of over 12". Each spacer segment shall be a solid, non-welded molded piece designed for accommodating a specific size carrier pipe O.D.
Each casing spacer shall be manufactured at a facility that has a Registered ISO 9001:2000 Quality Management System. A copy of the current ISO 9001:2000 registration shall be provided with material submittal.
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" or Model "FW" casing end seal.

Link-Seal® End Seal Specification
(Carrier Pipe Must Be 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.