PSI Model AZ Casing Spacers

Model AZ non-metallic casing spacers are designed for use with water and sewer pipes 3.85″ to 13.75″ in diameter. They are an economical alternative to banded woods skids and stainless steel bands for inserting pipes into casings.

Description

PSI Model AZ Non-Metallic Casing Spacers – Isolators

Model AZ

AZ non-metallic casing spacers are designed for use with water and sewer pipes 3.85″ to 13.75″ in diameter. They are an economical alternative to banded woods skids and stainless steel bands for inserting pipes into casings. AZ spacers also eliminate the need for sand or grout filling of the annular space in the casing. All are adaptable to a wide variety of carrier pipe O.D.’s found on PVC Pressure/Sewer Pipe, DI-Ductile Iron, C-900, P.E., and IPS-Steel Pipes.

Benefits and Features

  • Variable O.D.’s of casing spacer to fit multiple sized space
  • Manufactured from UV resistant polypropylene
  • Runner heights may be interchanged or field cut to adjust for grade
  • Corrosion protection – only metal components are steel bolts/nuts
  • One piece molded construction for maximum load bearing
  • Allen Head Bolts for improved spacer tightening

Casing Spacer Model AZ

Targeted Use

Water

  • For carrier pipe diameters ranging from 3.85″ (9.78mm) to 13.75″ (34.9mm).
  • For carrier pipe insertion lengths up to 300 feet.*
  • Spacing Recommendation: All Model AZ 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.
  • Recommended End Seals: Model C, S, W, and R

Typical Application for Model AZ Casing Spacers

psi casing spacer typical application

Material Specifications for
PSI Model AZ Casing Spacers and Isolators

 

SPECIFICATION ASTM TEST VALUE
Material Injection molded virgin polypropylene
Tensile
Strength
D790 8,100 to 9,000 psi
Compressive
Strength
D695 3,000 psi (211 kg/cm2)
Water
Absorption
D570 0.1%
Temperature -40°F to 180°F (-40°C to 82°C)
Impact
Strength
D256 1.5 ft.lb./in. (0.8 joules/cm)
Dielectric
Strength
D149 800 V/mil. min.
Load Carrying
Capacity*
770 lbs. (340kg)
Color Black
* The maximum load bearing capacity per spacer is based on 1 1/2″ (36mm) skid height in a cylindrical casing.
  • Liner – none
  • Runners – Sizes and Configurations
    4″ (101.6mm) through 12″ (305.0mm) = 3 to 5 segments/spacer. (See Chart below)
  • Hardware
    Metallic – Allen Head Bolts and Square Nuts are plated steel

Casing Spacer Model AZ

Warranty

Manufacturer’s warranty statement will be supplied upon request to Allied Corrosion Industries, Inc.

How to Order Model AZ Casing Spacers

To order Model AZ Non-Metallic Isolators please indicate the following:

  1. Quantity
  2. Model AZ
  3. Carrier Pipe O.D.
    (Type and coating thickness if applicable)
  4. Casing Pipe I.D.
    (Type and coating thickness if applicable)
  5. Bell or Joint O.D.
  6. Position Within Casing
  7. Contact your local distributor or Pipeline Seal & Insulator, Inc.

Casing Spacer Model AZ

Model AZ Casing Spacer
Runner Height and Configurations

 

Nominal Pipe
Diameter
O.D. Range Segments
per Spacer
AZ1
Model
Number
Runner
Height
in.
Position
in Casing
4.0″ 3.86″ to 5.12″ (98-130mm) 3 – AZ1 AZ1-16 5/8″ (16mm) Casing Spacer Model AZ
AZ1-25 1.0″ (25mm)
6.0″ 5.12″ to 6.77″ (130-172mm) 4 – AZ1 AZ1-36 1 1/2″ (36mm)
AZ1-55 2 1/4″ (25mm)
6.0″ 6.81″ to 7.95″ (173-202mm) 5 – AZ1 AZ1-75 3.0″ (75mm)
AZ1-90 3 1/2″ (90mm)
AZ1-110 4 1/2″ (110mm)

 

Nominal Pipe
Diameter
O.D. Range Segments
per Spacer
AZ1
Model
Number
Runner
Height
in.
Position
in Casing
8.0′ 7.99″ to 9.05″ (203-230mm) 3 – AZ2 AZ2-16 5/8″ (16mm) Casing Spacer Model AZ
AZ2-25 1.0″ (25mm)
8.0″ – 10.0″ 9.21″ to 10.75″ (234-273mm) 3 – AZ2 & 1-AZ1 AZ2-36 1 1/2″ (36mm)
AZ2-55 2 1/4″ (25mm)
10″ 10.75″ to 11.85″ (273-301mm) 4 – AZ2 AZ2-75 3.0″ (75mm)
AZ2-90 3 1/2″ (90mm)
12″ 11.89″ to 13.78″ (302-350mm) 4 – AZ2 & 1-AZ1 AZ2-110 3.0″ (75mm)

Typical Specifications for Model AZ Casing Spacers

Designed for 3.85″ through 13.75″ O.D. carrier pipes. Casing spacers shall be AZ segmented type molded in high density UV resistant polypropylene. Each spacer segment shall be a, “non-welded” molded piece designed for accommodating variable pipe O.D.’s by attachment of the required number of segments. Minimum spacer width shall be 5.2″ (132mm).

Runner height shall be sized correctly to provide adequate pipe support without the bell or joint contacting the casing during installation.

Approved ISO 9001:2000

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

Engineering Manual Cover

Casing Spacer and End SealsEngineering Manual and Buyers Guide