Material and rating— 150 pound Carbon steel (sizes available: 3”, 4”, 5”, 6”) 

ELEMENTS 

SHEATH MATERIAL

Copper for water heating and Liquids not corrosive to copper (to 350 F) Stainless Steel for environments corrosive to copper (1200 F) 

Incoloy for immersion in materials corrosive to copper and stainless steel and high heat environments (to 1600 F) 

Sizes available: .440, .315 

HOUSING

NEMA 1— without thermostat options 

TEMPERATURE CONTROL
Thermocouple may be spot welded to element sheath 

CIRCUITS

Single-phase: one or two elements 
Three-phase: three, six or nine elements 
Number of elements possible by Flange size: 
     3”– 1, 2 or 3 
     4”– 2, 3, 4 or 6 
     5”– 2, 3, 4, 6, 8 or 9 
     6”– 2, 3, 4, 6, 8 or 9