PSI Model PE Casing Spacers

PSI Model PE Casing spacers/isolators are manufactured from high density (linear), injection molded polyethylene to provide positive insulation, high abrasion resistance and low coefficient of friction.

PSI Model PE Non-Metallic Casing Spacers/Isolators

Model PE Description

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.

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.

Targeted Use

Energy

For carrier pipe diameters (Nominal Steel & IPS) ranging from 3/4″ (19.1mm) to 48″ (121.92cm).
For carrier pipe insertion lengths up to 1,000 feet.*
Spacing Recommendation: Max 8′ (243.8cm) between spacers, Max 2′ (61.0cm) from casing pipe end.
Recommended End Seals: Model C, S, W, R, and FW

Benefits and Features

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 temperatures to 280°F (138°C).
Eliminates the Need for Blown Sand or Pea Gravel

Typical Application for Model PE Casing Spacers

Typical Installation

Based on 20 ft. (6.0 meters) carrier pipe segments in a casing of not more than 300 ft. (91.5 meters). Consult Allied Corrosion for longer casings and for concrete pipe.

Recommended Maximum Spacing

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

Material Specifications for PSI Model PE Casing Spacers and Isolators

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 = Muliple segments with molded-in runners.

Hardware

Metallic – Bolts and Square Nuts are plated steel.

Non-Metallic – Bolts and Nuts are high temperature plastic.

Model PE Casing Spacer
Band Width and Runner Height

Model Size	Band Width	Runner Height
3/4 × 2	3.0″ (76.19mm)	5/16 (7.94mm)
1 × 3	3.0″ (76.19mm)	1/2″ (12.7mm)
1 1/4 × 3	3.0″ (76.19mm)	1/2″ (12.7mm)
1 1/2 × 3	3.0″ (76.19mm)	1/2″ (12.7mm)
2 × 4	4.0″ (101.6mm)	5/8″ (15.88mm)
2 1/2 × 5	4.0″ (101.6mm)	5/8″ (15.88mm)
3 × 6	4.0″ (101.6mm)	5/8″ (15.88mm)
4 × 6	4.0″ (101.6mm)	9/16″ (14.29mm)
4 × 8	4.0″ (101.6mm)	1″ (25.4mm)
6 × 8	4.0″ (101.6mm)	9/16″ (14.29mm)
6 × 10	4.0″ (101.6mm)	1″ (25.4mm)
6 × 10S*	4.0″ (101.6mm)	9/16″ (14.29mm)
8 × 10	4.0″ (101.6mm)	9/16″ (14.29mm)
8 × 12	5.0″ (127.0mm)	1″(25.4mm)
8 × 12S*	5.0″ (127.0mm)	7/8″ (22.23mm)
10 × 14	5.0″ (127.0mm)	7/8″ (22.23mm)
10 × 16	5.0″ (127.0mm)	7/8″ (22.23mm)
12 × 16	5.0″ (127.0mm)	7/8″ (22.23mm)
All Multiple Segments* (4″ Differentials)	6.25″ (158.75mm)	1″ (25.4mm)
All Multiple Segments* (6″ Differentials)	6.25″ (158.75mm)	1 1/2″ (38.1mm)
* S indicates Somastic Coated Pipe Model PE sized for nominal steel and IPS pipe.

Model PE – 2 Piece Casing Isolator/Spacer

Size (Nominal ANSI)		Specification Data		Approximate Shipping Data
Carrier	Minimum Casing	Effective Skid Height	Number Of Segments Per Unit	Number Of Units Per Case	Per Unit Weights In Pounds	Per Case Cu. Ft.
3/4″	2″	5/16″	2	10	.05	.09
1″	3″	1/2″	2	10	.15	.13
1-1/4″	3″	1/2″	2	10	.20	.14
1-1/2″	3″	1/2″	2	10	.20	.18
2″	4″	5/8″	2	10	.50	.34
2-1/2″	5″	5/8″	2	10	.57	.51
3″	6″	5/8″	2	10	.65	.47
4″	6″	9/16″	2	10	.77	.34
4″	8″	1″	2	10	1.00	.47
6″	8″	9/16″	2	10	1.10	.74
6″	10″	1″	2	10	1.65	.91
6″(S)	10″	9/16″	2	10	1.92	.91
8″	10″	9/16″	2	10	1.45	.56
8″	12″	1″	2	10	2.20	1.13
8″ (S)	12″	7/8″	2	10	2.29	1.13
10″	14″	7/8″	2	10	2.37	1.35
10″ (S)	16″	7/8″	2	10	2.55	1.35
12″	16″	7/8″	2	10	2.72	1.67
(S) means Somastic coated pipe

Model PE
Multi Segmented Casing Isolator/Spacer
For 4″ Carrier/Casing Differentials

Size (Nominal ANSI)		Specification Data			Approximate Shipping Data
Carrier	Minimum Casing	Effective Skid Height	Number Of Segments Per Unit		Number Of Units Per Case	Per Unit Weights In Pounds	Per Case Cu. Ft.
Carrier	Minimum Casing	Effective Skid Height	Full LS4	Half LS2	Number Of Units Per Case	Per Unit Weights In Pounds	Per Case Cu. Ft.
12″(S)	18″	1″	3	1	10	4.50	2.64
14″	18″	1″	3	1	10	4.50	2.64
16″	20″	1	4		10	5.00	2.98
18″	22″	1″	4	1	10	5.75	3.31
20″	24″	1″	5		10	6.25	3.65
22″	26″	1″	5	1	10	7.00	3.95
24″	28″	1″	6		10	7.50	4.33
26″	30″	1″	6	1	10	8.25	4.67
28″	32″	1″	7		10	8.75	5.01
30″	34″	1″	7	1	10	9.50	5.34
32″	36″	1″	8		10	10.00	5.63
34″	38″	1″	8	1	10	10.75	5.97
36″	40″	1″	9		10	11.25	6.30
38″	42″	1″	9	1	10	12.00	6.64
40″	44″	1″	10		10	12.50	6.98
42″	46″	1″	10	1	10	13.25	7.32
44″	48″	1″	11		10	13.75	7.66
46″	50″	1″	11	1	10	14.50	7.99
48″	52″	1″	12		10	15.00	8.33
(S) means Somastic coated pipe.

Model PE
Multi Segmented Casing Isolator/Spacer
For 6″ Carrier/Casing Differentials

Size (Nominal ANSI)		Specification Data			Approximate Shipping Data
Carrier>	Minimum Casing	Effective Skid Height	Number Of Segments Per Unit		Number Of Units Per Case	Per Unit Weights In Pounds	Per Case Cu. Ft.
Carrier>	Minimum Casing	Effective Skid Height	Full HS6	Half HS6A	Number Of Units Per Case	Per Unit Weights In Pounds	Per Case Cu. Ft.
14″	20″	1.5″	3	1	10	4.50	2.64
16″	22″	1.5″	4		10	5.00	2.98
18″	24″	1.5	4	1	10	5.75	3.31
20″	26″	1.5″	5		10	6.25	3.65
22″	28″	1.5″	5	1	10	7.00	3.95
24″	30″	1.5″	6		10	7.50	4.33
26″	32″	1.5″	6	1	10	8.25	4.67
28″	34″	1.5″	7		10	8.75	5.01
30″	36″	1.5″	7	1	10	9.50	5.34
32″	38″	1.5″	8		10	10.00	5.63
34″	40″	1.5″	8	1	10	10.75	5.97
36″	42″	1.5″	9		10	11.25	6.30
38″	44″	1.5″	9	1	10	12.00	6.64
40″	46″	1.5″	10		10	12.50	6.98
42″	48″	1.5″	10	1	10	13.25	7.32
44″	50″	1.5″	11		10	13.75	7.66
46″	52″	1.5″	11	1	10	14.50	7.99
48″	54″	1.5″	12		10	15.00	8.33
(S) means Somastic coated pipe

Typical Specifications for Model HT Casing Spacers

Casing Isolator Specification

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.

Approved manufacturer: 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” 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.

PDF Documents for Download

Casing Spacer and End Seals Engineering Manual and Buyers Guide

PSI Model PE Casing Spacers

Additional information

SKU PSI-PE Categories Pipeline Seal and Insulator Inc. (PSI), Casing Materials, Isolators and Hardware, Pipeline Tags isolating, psi, spacer

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SKU PSI-PE Categories Pipeline Seal and Insulator Inc. (PSI), Casing Materials, Isolators and Hardware, Pipeline Tags isolating, psi, spacer