Coated Casing Spacers - Isolators (Model C)

Coated Casing Spacers - Isolators (Model C)

Description

An extremely tough and durable heat fused fluid bed thermo set cross-linked polymer coating is offered on steel casing spacers/isolators 4" and larger, with 8" and 12" band widths. The cold formed steel casing spacer/isolator band (risers where applicable) and studs for runner mounting are grit blasted, heated and fusion coated with a cross-linked epoxy polymer formulation, providing a minimum 0.010 (0.254mm) thick coating over the entire metallic surface. A post cured cycle strengthens the bond and provides an even more uniform coating. Other heat fused formulations are also available for custom orders and applications. The runners are attached with 3/8" diameter studs, which are fusion welded to the band before it is powder coated. They are recessed far below the wearing surface of the runner. After the runner is anchored to the band, the stud counter-bore is filled with specially formulated caulk to assure a water tight seal for the stud and the locking fastener.

Targeted Use - Energy, Water and Filled Casings

  • For carrier pipe diameters ranging from 4" (101.6mm) to 120" (304.8cm.
  • For carrier pipe insertion lengths up to 5,000 feet* (1,524M).
  • Spacing Recommendations: Max 8' (243.8cm) between spacers, Max 2' (61.0cm) from casing pipe end, Max 2' (61.0cm) on each side of bell or mechanical joint.
  • Recommended End Seals: Model C, S, W, R and FW.

*Pipe insertion lengths may vary depending on type of casing pipe, condition of casing pipe or other factors that may cause excessive abrasion to runner materials.

Typical Application for Coated Casing Spacers

Benefits/Features of Coated Casing Spacers

  • Low Labor Costs - May Be Installed By One Person
  • Glass Reinforced Nylon or Polyester Runners Offer Low Coefficient of Friction = 0.1 to 0.6
  • Glass Reinforced Nylon or Polyester Runners Offer 18,000 PSI (1,265kg/cm2) Compressive Strength
  • Riser Height May Be Specified For Specific Positioning of Carrier Pipe Within Casing
  • Heavy Duty PVC Inner Liner Provides Protection For Pipe and/or Coating
  • Offers excellent corrosion resistance
  • May be used for long pulls and/or heavy pipe installations
  • Designed to last for the life of the piping system
  • PVC Liner Provides Back-up Isolation
  • Deeply Embossed Flanges Offer Added Strength During Tightening of Flange Bolts
  • Eliminates the Need for Blown Sand or Pea Gravel
  • Available with 8" or 12" bands
  • 10 or 7 gauge risers may be ordered

Casing Spacer Field Terminology

Material Specifications - PSI Cross-Linked Epoxy Coated Metallic Casing Spacers/Isolators

Band

14 Gauge (0.074"[1.88mm]) hot rolled and pickled mild steel
12 Gauge (0.105" [2.66mm]) hot rolled and pickled mild steel. Flanges of the spacer are deep embossed and the corners are chamfered

Configurations - Band

4" (101.6mm) through 36" (914mm) = 2-piece
36" (914mm) through 48" (1,219mm) = 3-piece
48" (1,219mm) and over = Consult Factory

Finish - 10 to 16 mil. fusion bonded PVC coating

Durometer - shore D (10 sec.) (ASTM D2240-74) 86
Max. Operating Temp. (constant) 225°F. (107°C.)
Aging Properties Excellent
Electrical Properties (ASTM
D149-97)(short time 0.010"		  1,500 V/mil

Resistance:
Salt Spray (ASTM B117)
Acids
Alkalies

 Excellent
Good
Good

Liner - Polyvinyl Chloride Liner (Standard)

Thickness 0.090" (2.29mm) minimum
Hardness Durometer "A" 85-90
Dielectric Strength
1/8" (3.18mm) Surge Test
Step-by-Step Test		 60,000 V min.
58,000 V min.
Water Absorption 1% max
Temperature -40 to 170°F. (-40 to 76°C.)

Liner - T.P.E. Liner (Temperature Extremes) Model C12 Only

Thickness 0.118" (3.0mm)
Hardness Shore "A" 73
Dielectric Strength
1/8" (3.18mm) Surge Test
Step-by-Step Test		 60,000 V min.
58,000 V min.
Water Absorption 1% max
Temperature -50 to 270°F. (-45 to 132°C.)

Risers

10 Gauge (0.135" [3.43mm]) steel MIG welded to band. (standard)
7 Gauge (0.179" [4.55mm]) steel MIG welded to band. (Contact PSI)

Hardware (Threaded Studs, Nuts and Washers)

Threaded Studs = 5/16" - 18 x 2-1/2"
304 staianless steel or plated Hex Nuts = 5/16"
Washers = 5/16" SAE 2330

Configurations (Threaded Studs, Nuts and Washers)

8" (203.2mm) Band = 6 studs, 12 nuts and washers
12" (305mm) Band = 8 studs, 16 nuts and washers
Washers = 5/16" SAE 2330