kwik-ZIPINERT CENTRALIZER AND SPACER SYSTEMS
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For the Drilling and Civil Construction Industries |
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Revolutionary kwik-ZIP® Inert Centralizer and Spacer System
- Ideal for use with all types of casing, pipe, and screening, including PVC, steel, fiberglass, and gravel-packed screen installations.
- New GT Series - Ideal for small diameter drop pipe and Geo engineering applications, including rock bolts, soil nails, logging, sondes, etc.
- Rapid on-site assembly with lightweight, kwik-ZIP® segments.
- Fully adjustable Centralizer diameter -- just add more segments!
- No pins, bolts, or welding.
- Easy and economical to transport in stackable flat segments.
- Satisfies Major Industry Standards such as:
- NGWA (USA) Manual of Water Well Construction Standards, 2nd Edition
- ANSI/AWWA a100-97: Water Wells
- ASTM D 5092: Ground Water Monitor Well Design
- Australian Minimum Bore Construction Requirements (including requirements for Inert Centralizers)
- Corrosion Resistant.
- Will not damage Casing.
- Different Bow heights available for varied annulus sizes.
- Suitable for formation temperatures up to 176° F (HT Series).
Estimation Table for the Number of Segments Required for Various Casing Diameters
Size Table and Setting Guide
0.70" to 2.56" diameter GT Series (includes GT 20-1, GT 30-1, GT 40-1) |
 GT Series Centralizer |
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Applications: Small diameter rock bolts, soil nails, drop pipe, etc., from 0.70" to 2.56" diameter |
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OD of Bar, Pipe
or Screen, etc. |
Units Required per
Centralizer |
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0.70" to 1.14" |
2 |
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1.14" to 1.81" |
3 |
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1.81"to- 2.56" |
4 |
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Over 2.56" |
Use 155 HT Series |
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2.28" to 7.09" diameter 155 HT Series (includes 155 HT-D, 155 HT-E) |
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Applications: Grouted casing, gravel-packed screen, drop pipe, anchors, etc., with diameters greater than 2.28" |
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OD of Bar, Pipe
or Screen, etc. |
Units Required per
Centralizer |
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2.28" to 3.54" |
2 |
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3.54" to 5.12" |
3 |
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5.12" to 7.09" |
4 |
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Over 7.09" |
Use 380 HT Series |
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6.30" and greater diameter
380 HT Series (includes 380 HT-D, 380 HT-E, 380 HT-F) |
380 HT Series Centralizer |
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Applications: Grouted casing, gravel-packed screen, drop pipe, cased crossing, etc., with diameters greater than 6.30" |
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OD of Bar, Pipe
or Screen, etc. |
Units Required per
Centralizer |
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6.30" to 9.05" |
2 |
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9.45" to 13.39" |
3 |
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13.39" to 18.11" |
4 |
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18.11" to 22.83" |
5 |
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22.83" to 27.56" |
6 |
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27.56" to 31.50" |
7 |
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Over 31.50" |
Refer to Installation Guide |
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kwik-ZIP® Casing Centralizer Product Selection Criteria
A kwik-Zip centralizer model is available for all pipe, bar, or screen diameters above 0.70" OD. A setting Tool is available for the 155 and 380 Series models to assist with correct installation. No tool is required for the GT Series. Select the appropriate kwik-ZIP® Casing Centralizer Segment Model for your application from the following table:
Model and Bow Height (inches) |
Service Temperature (degree F) |
Recommended for Casing Diameter (nominal diameter range - inches) |
GT 20-1 (0.79") |
176° F |
0.70" to 2.56" |
GT 30-1 (1.18") |
176° F |
0.70" to 2.56" |
GT 40-1 (1.57") |
176° F |
0.70" to 2.56" |
155 HT-D (1.18") |
176° F |
2.28" to 7.09" |
155 HT-E (2") |
176° F |
2.28" to 7.09" |
380 HT-D (1.18") |
176° F |
6.30" and larger |
380 HT-E (2") |
176° F |
6.30" and larger |
380 HT-F (4") |
176° F |
6.30" and larger |
