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SCREW PLUG
IMMERSION HEATERS
EMH-061-120V shown
EMH Series
U 1⁄2, 3⁄4, and 11⁄4 NPT
Screw Plugs
U 316 SS Sheath
U 400 to 1000 W
U 120 and 240V, 1-Phase
U Single Thread
Pipe Construction
SPECIFICATIONS
Power: 120 and 240V, 1-phase
Watt Density:
5
⁄8" Diameter: 37 W/in2
3⁄4" Diameter: 38 W/in2
11⁄4" Diameter: 24 W/in
Termination:
5⁄8, 3⁄4" Diameter: 12" fiberglass leads
rated to 250°C (482°F), epoxy potting
rated to 130°C (266°F)
11⁄4" Diameter: 8-32 screw
and nut terminals
Sheath: 316 SS
Screw Plug and Threads: 316 SS
TOLERANCES
Wattage tolerances are held to
5 to 10% at rated voltage.
Length tolerances are ±2% with a
±1⁄16" minimum
2
smaller than actual size.
Refer to Dimensions Chart
Length Under Bushing Hex
1/4"
NOM
DIA.
A
Heated length
C
D
NPT
size
All models over
1
1
" diameter
⁄
4
come standard
with box.
EMH-110-240V
shown smaller
than actual size.
D
AF
3
2
1
45
CONSTRUCTION
1. Welded end
2. Mica
3. Magnesium oxide packing
4. Element wire situated close to
outside surface for maximum heat
transfer and minimum internal
temperature while preserving good
dielectric qualities
5. Series 316 SS sheath
6. Mounting bushing
7. Ceramic cap
8. Flexible, stranded, nickel-alloy
insulated leads or rust-resistant
post terminals
102
6
7
8
To Order
Dimensions (inch)
Model No. Description Watts* A C D AF
1
" dia, 1
⁄
4
5
" diameter,
⁄
8
5
" diameter,
⁄
8
3
" diameter,
⁄
4
3
" diameter,
⁄
4
1
" diameter, 1
⁄
4
1
" diameter, 1
⁄
4
1
NPT screw plug immersion heater.
⁄
4
EMH-060-120V
EMH-060-240V
EMH-061-120V
EMH-061-240V
EMH-110-120V 1
EMH-110-240V 1
Wattages are based on a unit operating immersed in water.
*
Comes complete with operator’s manual.
Ordering Examples: EMH-060-120V,
EMH-110-120V, 1
1
NPT 400 6
⁄
2
1
NPT 400 6
⁄
2
3
NPT 500 6
⁄
4
3
NPT 500 6
⁄
4
1
NPT 1000 11 1
⁄
4
1
NPT 1000 11 1
⁄
4
5
1
" dia,
⁄
8
NPT.
⁄
2
3
9
⁄
4
3
⁄
4
7
⁄
8
7
⁄
8
1
⁄
32
1
⁄
32
7
⁄
⁄
16
8
9
7
⁄
⁄
16
8
5
1
1
⁄
⁄
8
8
5
1
1
⁄
⁄
8
23
23
8
3
1
⁄
⁄
32
4
3
1
⁄
⁄
32
4
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