STS Thermal SystemsSTS Thermal Systems
STS Thermal Systems

1 inch NPT Screw Plug Immersion

Material
E
F
H
Brass
3⁄16
1 ⅜
Steel & Stainless
1 ½
1 15⁄16

20-23 Watts/Sq. Inch
Immersed 
Length "B" 
Watts
Volts
Single
Phase
BRASS PLUG
Oils & Alkali 
Solutions
STAINLESS PLUG
Air & 
Corrosive
Net
Wt.
(lbs.)
6 ½
250
120
240
EM1-250-1
EM1-250-2
AM1-250-1
AM1-250-2
1.5
9 ½
375
120
240
EM1-375-1
EM1-375-2
AM1-375-1
AM1-375-2
1.5
12 ½
500
120
240
EM1-500-1
EM1-500-2
AM1-500-1
AM1-500-2
1.75
13 ½
750
120
240
EM1-750-1
EM1-750-2
AM1-750-1
AM1-750-2
1.75
16 ¾
1000
120
240
EM1-1000-1
EM1-1000-2
AM1-1000-1
AM1-1000-2
1.75
23 ¾
1500
120
240
EM1-1500-1
EM1-1500-2
AM1-1500-1
AM1-1500-2
2

60-86 Watts/Sq. Inch
Immersed 
Length "B" 
Watts
Volts
Single
Phase
BRASS PLUG
Water
Solutions
STAINLESS PLUG
Mild
Corrosive
Net
Wt.
(lbs.)
6 ⅜
 
 
500
120
240
CH1-500-1
CH1-500-2
AH1-500-1
AH1-500-2
1.5
750
120
240
CH1-750-1
CH1-750-2
AH1-750-1
AH1-750-2
1.5
1000
120
240
CH1-1000-1
CH1-1000-2
AH1-1000-1
AH1-1000-2
1.5
8 ½
1250
120
240
CH1-1250-1
CH1-1250-2
AH1-1250-1
AH1-1250-2
1.5
9 ¼
1500
120
240
CH1-1500-1
CH1-1500-2
AH1-1500-1
AH1-1500-2
1.5
12 ¼
2000
120
240
CH1-2000-1
CH1-2000-2
AH1-2000-1
AH1-2000-2
1.75
13 ⅞
2500
120
240
CH1-2500-1
CH1-2500-2
AH1-2500-1
AH1-2500-2
1.75
15 ⅝
3000
120
240
CH1-3000-1
CH1-3000-2
AH1-3000-1
AH1-3000-2
1.75
16 ¾
4000
120
240
CH1-4000-1
CH1-4000-2
AH1-4000-1
AH1-4000-2
2

1 Inch Screw Plug
704-399-4248