ASB Heating Elements Ltd. 1” NPT Screw Plug Immersion Heater User Manual
1” npt screw plug immersion heater, Standard (sp series), With thermostat (asp series)
2"
3
9
/
16
"
3
1
/
8
"
B
3
1
/
4
"
3
1
/
8
"
4
13
/
16
"
1” NPT Screw Plug
Immersion Heater
Standard (SP series)
General Purpose Enclosure
no thermostat
With thermostat (ASP series)
General Purpose Enclosure
with thermostat
1" NPT opening
4
1/2
"
3
1/2
"
dia.
3"
ap
pro
x.
2
5/16
"
Moisture Resistant or Hazardous Location - SP series
4
1/2
" a
pp
rox
.
2
11/16
"
5
1/4
"
4
1/4
"
dia.
1
1/4
" NPT opening
Moisture Resistant or Hazardous Location - ASP series
80 watts/in
2
Copper Sheath
Typically to heat:
1” brass screw plug
municipal water
1 element - up to 240 volts
(specifiy voltage when ordering)
watts immersed
fold back
catalogue number
net
length
length
Fig. 59
Fig. 60 weight
B dim.
standard
with thermostat (lb)
500
5
SPC-0500
ASPC-0500
2
750
6
7
/
8
SPC-0750
ASPC-0750
2
1000
6
7
/
8
SPC-1000
ASPC-1000
2
1250 10
SPC-1250
ASPC-1250
2
1500 10
SPC-1500
ASPC-1500
2
2000
7
1
/
2
6
1
/
16
SPC-2000
ASPC-2000
3
3000 10
9
/
16
8
7
/
8
SPC-3000
ASPC-3000
3
4500 15
1
/
8
13
15
/
16
SPC-4500
ASPC-4500
3
5000 16
5
/
8
15
7
/
8
SPC-5000
ASPC-5000
3
25 watts/in
2
Incoloy Sheath
Typically to heat:
1” steel screw plug
light oils
1 element - up to 240 volts mild caustic solution
(specifiy voltage when ordering)
mild alkaline solution
watts immersed
fold back
catalogue number
net
length
length
Fig. 59
Fig. 60 weight
B dim.
standard
with thermostat (lb)
500
8
7
/
8
3
SPA-0500
ASPA-0500
1
750
10
6
1
/
4
SPA-0750
ASPA-0750
2
1000 11
7
/
8
9
1
/
4
SPA-1000
ASPA-1000
2
1500 18
13
1
/
2
SPA-1500
ASPA-1500
2
2000 22
19
1
/
2
SPA-2000
ASPA-2000
3
12 watts/in
2
Incoloy Sheath
Typically to heat:
1” steel screw plug
hydraulic oils
1 element - up to 240 volts
heavy oils
(specifiy voltage when ordering)
mild caustic solution
mild alkaline solution
watts immersed
fold back
catalogue number
net
length
length
Fig. 59
Fig. 60
weight
B dim.
standard
with thermostat (lb)
300
8
7
/
8
5
SPAL-0300 ASPAL-0300
1
500
11
7
/
8
10
1
/
2
SPAL-0500 ASPAL-0500
2
750
18
14
1
/
2
SPAL-0750 ASPAL-0750
2
1000 22
19
SPAL-1000 ASPAL-1000
3
Moisture Resistant Enclosure (add suffix MR)
Hazardous Location (Explosion Resistant - add suffix ER)
Non-Thermostat version
Moisture Resistant Enclosure (add suffix MR)
Hazardous Location (Explosion Resistant - add suffix ER)
Thermostat included version
10 - 120°C (50 - 250°F)
240 vac, 25 amp, SPST
Figure 59
Figure 60
Figure 61
Figure 62
B1
Optional Temperature Ranges
-16 to +40°C (0-100°F)
70-280°C (160-540°F)