انسیلاتور فلزی

COATED STEEL
Polyvinyl chloride coated (PVC) casing isolators are often select ed due to their strength and excellent corrosion resistance.
An extremely durable heat fused plastic coating is offered on steel casing isolators 4" and larger, with 8" and 12" band widths. The cold formed steel casing isolator band, complete with runner studs installed, is vapor degreased, primed, heated and fusion coated with plastic, providing a minimum .010" (.254mm) thick coating over the entire band and runner studs. A post cured cycle strengthens the bond and provides an even more uniform coating.
Polyvinyl chloride is available as a standard. Other heat fused plastic coatings 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 PVC 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 to assure a water tight seal for the stud and the lock fastener.

PAINTED STEEL
Painted steel casing isolators are select ed when strength and economy are your most important concerns. A rust inhibiting paint is applied over 14 gauge (0.074”/1.88mm) hot rolled and pickled mild steel for casing isolators 4” (101.6mm) diameter and up, in either 8” (203mm) or 12” (305mm) bands. The flanges of the spacer are deep embossed and the corners are chamfered. The G-2 runners are attached with 3/8” (9.5mm) diameter studs, which are fusion welded to the band before it is painted. They are recessed far below the wearing surface of the runner and, after the runner is anchored to the band, the stud counter-bore is filled to insure a water tight seal for the stud and the lock fastener. G-1 runners are attached by projection welded method.

Runners
Runner material compositions for isolators/spacers are optimized to insure a smooth, low resistance ride even for the heaviest and longest pull applications. While providing resistance to the abrasive action, runners are optimized for maximum compressive strength and hardness. Glass reinforced polymer runners are standard in 1” (25.4mm) or 2” (50.8mm) widths for A (painted). C (coated) and S (stainless steel) models are available in 2” (50.8mm) only.
glass reinforced runners have 5 times the compressive strength of polyethylene runners. Our 2” wide runners are particularly designed for heavier pipes and longer pulls.

Effective Runner Heights and Lengths
Sizing carrier pipe O.D. and casing I.D. can be mis-leading at times due to a difference between nominal and effective dimensions. When sizing, make sure to consider effective runner height. Two
heights are available/used; custom positioning in the casing can be achieved with riser heights.

Heights - Nominal versus Effective
1” and 2” Wide Glass Reinforced Polymer Runners
Nominal 1.0” (25.4mm) - 1.5” (38.1mm)
Effective 1.07” (27.2mm) - 1.70” (43.2mm)

Lengths - Effective
1” Wide Glass Reinforced Polymer Runners
8.5” (215.9mm) - 12.5” (317.5mm)
2” Wide Glass Reinforced Polymer Runners
7.0” (177.8mm) - 11.0” (279.4mm)

Runners Sizes and Configurations
Stainless Steel & Coated - 2” (51mm) Wide Glass Reinforced
Polymer Runners
Painted - 1” (25.4mm) or 2” (51mm) Wide Glass Reinforced
Polymer Runners
4” (101.6mm) thru 12” (305mm) = 2 top & 2 bottom
14” (356mm) thru 36” (914mm) = 2 top & 4 bottom

Runner Specifications
Tensile Strength, (ASTM D638) 17,600 psi 1,237 kg/cm2
Flexural Strength, (ASTM D790) 25,300 psi 1,779 kg/cm2
Compression Strength, (ASTM D695) 18,000 psi 1,266 kg/cm2
(10% Deformation)
Deflection Temp. @ 264 psi - (ASTM D648) 405°F (205°C)
Deformation Under Load: @ 122°F (50°C)
2000 lb. load - (ASTM D621) 1.2%

Liner
Material Polyvinyl Chloride
Thickness 0.090” (2.29mm) minimum
Hardness Durometer “A” 85-90
Dielectric Strength
1/8” (3.18mm) Surge Test 60,000 V min.
Step-by-step Test 58,000 V min.
Water Absorption 1% max.

Risers

Coated & Painted Mild Steel
10 gauge (0.135mm) steel MIG welded to band.



Material Specifications
Metal Casing Isolators/Spacers Band Painted & Coated
14 Gauge (0.074” [1.88mm]) hot rolled and pickled mild steel. Flanges of
the spacer are deep embossed and the corners are chamfered.

Stainless Steel
14 Gauge (0.074” [1.88mm]) 304 stainless steel. Flanges of the spacer
are deep embossed and the corners are chamfered.

Configurations
4” (101.6mm) through 36” (914mm) = 2 Piece
36” (914mm) through 48” (1,219mm) = 3 Piece
48” (1,219mm) and over = Consult Factory

Coated Mild Steel: 10 to 16 mil. fusion bonded PVC
coating (others available)

Painted Mild Steel: Rust inhibiting paint
Fusion Bonded PVC Coating
Durometer - shore A2 (10 sec.) (ASTM D1706-61T) 80
Max. Operating Temp. (constant) 150° F. (65° C.)
Aging Properties Excellent
Electrical Properties (ASTM D149-61)
(short time .010”) 1,380 V/mil.
Resistance:
Salt Spray (ASTM B117) Excellent
Acids Good
Alkalies Good





Studs, Nuts and Washers
Studs = 5/16” - 18 x 2 1/2” 304 stainless steel or plated
Hex Nuts = 5/16”
Washers = 5/16” SAE 2330

Configurations
8” (203.2mm) Band = 6 studs, 12 nuts and washers
12” (305mm) Band = 8 studs, 16 nuts and washers


Factory made casing isolators/spacers of the following de script ion shall be installed on any carrier pipe passing through a pipe casing. They are designed to protect the carrier pipe corrosion coating and electrically isolate the carrier pipe from the casing.

isolators/spacers shall have a minimum 14 gauge steel band and where required, 10 gauge risers. The band, risers and connecting studs shall be welded and cleaned at the factory before the application of a fluidized bed fusion bonded PVC coating of between 10-16 mils thickness. The PVC coating shall provide good resistance to acids and alkalies and excellent resistance under ASTM B117 salt spray tests. (Epoxy coatings are not an acceptable alternative).
The isolators/spacers shall have a flexible PVC inner liner of 0.09 inch thickness with a durometer “A” 85-90 hardness and a minimum 58,000 volt dielectric strength. The runners shall be high pressure molded glass reinforced polymer with a minimum compressive strength of 18,000 psi per ASTM D638. The runners shall be 2.0 inch in width and a minimum of 7.0 inches.
The runners shall be attached to the band or riser by 3/8” welded steel studs and lock nuts which shall be recessed far below the wearing surface on the runner. The recess shall be filled with a corrosion inhibiting filler. The band section shall be bolted together with cadmium plated studs, nuts and washers.


Summary

Band – 14-Gauge, hot rolled, pickled & oiled Steel 
Riser – 10-Gauge, hot rolled, pickled & oiled Steel 

LINER - EDPM (Polyvinyl Chloride Alternate) 
Thickness - .090” (2.29mm) minimum 
Hardness - Durometer “A” 85-90 
Dielectric Strength - {1/8” (3.18 mm) thick} 50,000 VPM 
Water Absorption - 1% maximum
Overlaps edges

BOLTS, NUTS and WASHERS 
Up to nominal OD of 16” - Electro Plated – 1/4” – 20UNC x 2” long bolts 
1/4” hex nuts 
1/4” washers SAE 2330 
Above nominal OD of 16” - Electro Plated – 5/16” – 18UNC x 2” long bolts 
5/16” hex nuts 
5/16” washers SAE 2330 

RUNNERS 
1” wide or 2” wide glass filled polymer
Sizes Available: 
Length - 7” (17.8 cm) 
Effective heights for pipes with a nominal OD of 24” or less (As applicable) – 
1”, 1 ¼”, 1 ½”, 2”, 2 ½”, 3”, 3 ½”, 4”, 4 ½”, 5”, 5 ½”, 6” 
Effective heights for pipes with a nominal OD of 18” and larger (As applicable) – 
1 ½” 
Material Specifications: 
Rockwell Hardness (M) – (ASTM D 785) = 101 
Tensile Strength – (ASTM D 638) = 27,000 psi 
Flexural Strength – (ASTM D 790) = 40,000 psi 
Compression Strength – (ASTM D 695) = 33,000 psi 
Deflection Temperature @ 264 psi – (ASTM D 648) = 478oF (248oC) 


Deformation Under Load @ 72oF (22oC) (3500 lb. Load) – (ASTM D 648) = 1% 

FINISH 
Copolymer-based Thermoplastic Specifications 
Adhesion – (ASTM D 1002) = >3000 psi 
Durometer - Shore A2 (ASTM D 1706-61T) = 50-55
Maximum Operating Temperature (Constant) = 150oF (65oC) 

WELDING 
All risers shall be welded to the band by MIG welding.