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Non-Swaged Cartridge Heater Fittings

Flanges

Non-swag heater with flange
  • Standard flange material is stainless steel.
  • Flanges can be welded on the lead end of the heater.
  • Flanges can be used to hold a heater in place to prevent backing out during operation.
  • Flanges also assist in heater removal. 
  • Flanges can be round or irregularly shaped and are 1/16" thick. 
  • Custom round or rectangular flanges available.
  • Contact Backer Marathon for standard and non-standard flange configurations at sales@backermarathon.com.

Standard Flange Dimensions

Flange Outside Diameter 1" 1-1/2" 2"
Can be used on 5/16, 3/8, 1/2 5/16, 3/8, 1/2, 5/8, 3/4  1/2, 5/8, 3/4, 1
Hole Spacing 3/4 1-1/18 1-1/2
Hole Size .14 .16 .20

Single Ended NPT Fittings

Non-Swag Single-Ended Group

Single End NPT Fitting Specification Chart

Heater Diameter 3/8" 1/2" 5/8" 3/4" 1"
NPT Thread Size 1/4 3/8 1/2 3/4 1
Brass "A" .70 .74 .80 .92 1.30
Brass "B" .56 .69 .87 1.06 1.44
Stainless Steel "A" .76 .77 .84 .96 1.27
Stainless Steel "B" .56 .67 .87 1.06 1.37

Double Ended NPT Fittings

Non-Swag Double-Ended Group

Double Ended NPT Fitting Specification Chart

Heater Diameter 3/8" 1/2" 5/8" 3/4" 1"
NPT Thread Size 1/4 3/8 1/2 3/4 1
Brass "A" 1.13 1.25 1.53 1.72 2.35
Brass "B" .56 .69 .87 1.06 1.37
Stainless Steel "A" 1.13 1.25 1.53 1.72 CALL
Stainless Steel "B" .56 .68 .87 1.06 CALL

Mechanical Stops

Non-Swag Heater with Tab Stops

Mechanical Stops are ideal for preventing heaters from sliding too far into the hole. Backer Marathon offers the following mechanical stops:

  • Weld Beads
  • Tab Stops 
  • Locating Rings

Custom Fittings

Non-Swag Heater with Stainless Steel NPT Straight Threads
  • Straight Threads
  • Brass Cubes
  • Stainless Steel Cubes
  • Others to Your Specifications
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