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SCREW PLUG CIRCULATION HEATERS

← Circulation Heaters

Flanged Circulation Heaters →

Screw Plug Circulation Heaters feature Incoloy® 840 sheath for the widest coverage of applications and temperatures, NEMA 4 moisture tight enclosure, sediment drain, and NPT inlet/outlet.

1" NPT SCREW PLUG CIRCULATION HEATERS

1″ Brass NPT 60-86 wsi
1″ Steel NPT 20 & 23 wsi
Volts
1-Ph.
Watts
A
B
Wt.
(lbs.)
Watts
A
B
Wt.
(lbs.)
120
240
1500
18
12 3⁄8
14
500
19 1⁄8
13 1⁄2
14
120
240
2000
18
12 3⁄8
14
750
19 1⁄8
13 1⁄2
14
120
240
2500
22
16 3⁄8
16
1000
22 3⁄8
16 3⁄4
17
120
240
3000
22
16 3⁄8
16
1500
29 3⁄8
23 3⁄4
20
2" & 2 1/2" NPT Screw plug circulation heaters
Plug Size
D
E
F
G
H
2″ NPT
6 3⁄4“
6″
5″
3⁄4” NPT
4 1⁄2“
2 1⁄2” NPT
7 1⁄2“
7 1⁄4“
5 1⁄4“
1″ NPT
 5 1⁄2“

2″ Brass NPT – 48 wsi
2″ Steel NPT – 23 wsi
Volts
1-Ph.
KW
B
C
Wt.
(lbs.)
KW
A
B
C
Wt.
(lbs.)
120/240
240/480
3
24 1/4
15
–
20
1.5
23 1/4
15
–
20
120/240
240/480
4
31 1/4
23
–
27
2
31 1/4
23
–
27
120/240
240/480
5
31 1/4
23
–
27
2.5
31 1/4
23
–
27
120/240
240/480
6
31 1/4
23
–
27
3
31 1/4
23
–
27
120/240
240/480
8
38 3/4
30 1/2
26
36
4
38 3/4
30 1/2
26
36
120/240
240/480
10
46 1/4
38
26
43
5
46 1/4
38
26
43
120/240
240/480
12
54 1/4
46
39
50
6
54 1/4
46
39
50
21/2” Brass NPT – 48 wsi
21/2” Steel NPT – 23 wsi
Volts
3-Ph.
KW
A
B
C
Wt.
(lbs.)
KW
A
B
C
Wt.
(lbs.)
240
480
6
31
22 1/2
16 1/2
65
3
31
22 1/2
16 1/2
70
240
480
7.5
31
22 1/2
16 1/2
65
3.75
31
22 1/2
16 1/2
70
240
480
9
31
22 1/2
16 1/2
65
4.5
31
22 1/2
16 1/2
70
240
480
12
41
32 1/2
26 1/2
76
6
41
32 1/2
26 1/2
80
240
480
15
55
45
39
93
7.5
55
45
39
96
240
480
18
55
45
39
95
9
55
45
39
98
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Calculators

Power Flow Rate Temp Calculator

Calculate the electrical power, flow rate or temperature requirement.
airflow in standard cubic feet per minute
temperature rise in degrees F from the inlet to the exhaust
Watts = SCFM x ΔT/2.5

Temperature Conversion Calculator

Calculate the electrical power, flow rate or temperature requirement.
°F = ((( °C * 9) / 5 ) + 32)
°C = ((( °F - 32) * 5 ) / 9)

Three-Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * (V * √2)
V = (W / LC) / √2
LC = W / (V * √2)

Single Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * V
V = LC * W
LC = W / V

Ohms Law Calculator

Fill in two values to find the other two.

O = V / A

O = V² / W

O = W / A²

V = A * O = A * (V/A)

V = √(W * O)

V = W / A

A = V / O

A = W/ V

A = √(W / O)

W = A * V

W = V² / O

W = A² * O

Heat Transfer Through Convection Calculator

ρ = density (lb/ft3)

V = volume flow rate (ft3/hour)

Cp = specific heat (Btu/lb°F)

Ta-Tb = temperature differential (°F)

Q = ρ x V x Cp x (Ta-Tb)


Fill in four values

ρ = density (lb/ft3)
V = volume flow rate (ft3/hour)
Cp = specific heat (Btu/lb°F)
Ta-Tb = TD (°F)
Q = ρ x V x Cp x (Ta-Tb)

ACFM to SCFM

ACFM = airflow in actual cubic feet per minute

P = gage pressure (psi)

T = gas temperature °R = 460 + °F

SCFM = airflow in standard cubic feet per minute


Find Standard Cubic Feet per Minute based on data from your Actual Cubic Feet per Minute Rotameter

airflow in actual cubic feet per minute
gage pressure (psi)
gas temperature °R = 460 + °F
airflow in standard cubic feet per minute

Standard Flow Rate (SCFM) Calculator

Calculate the SCFM.
Actual cubic feet per minute
Actual pounds per square inch at Gauge
Actual temperature in °F. °R = 460 + °F
CFM * (PSI actual / 14.7psi)*(528°R / T actual)

Pressure Conversion

Fill in one value to calculate the other.
PSI = Bar * 14.504
Bar = PSI / 14.504

Mass Flow to volume Metric Flow

Fill in one value to calculate the other two
kg/h = Kilogram Per Hour (lb/min multiply by 27.216)
Lbs/min = Pounds per minute (kg/h divide by 27.216)
SCFM = Standard cubic feet per minute

Power Flow Rate Temp Calculator

Calculate the electrical power, flow rate or temperature requirement.
airflow in standard cubic feet per minute
temperature rise in degrees F from the inlet to the exhaust
Watts = SCFM x ΔT/2.5

Temperature Conversion Calculator

Calculate the electrical power, flow rate or temperature requirement.
°C = ((( °F - 32) * 5 ) / 9)
°F = ((( °C * 9) / 5 ) + 32)

Three-Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * (V * √2)
V = (W / LC) / √2
LC = W / (V * √2)

Single Phase Unit Calculator

Fill in two values to find the 3rd.
W = LC * V
V = LC * W
LC = W / V

Ohms Law Calculator

Fill in two values to find the other two.

O = V / A

O = V² / W

O = W / A²

V = A * O = A * (V/A)

V = √(W * O)

V = W / A

A = V / O

A = W/ V

A = √(W / O)

W = A * V

W = V² / O

W = A² * O

Heat Transfer Through Convection Calculator

ρ = density (lb/ft3)

V = volume flow rate (ft3/hour)

Cp = specific heat (Btu/lb°F)

Ta-Tb = temperature differential (°F)

Q = ρ x V x Cp x (Ta-Tb)


Fill in four values

ρ = density (lb/ft3)
V = volume flow rate (ft3/hour)
Cp = specific heat (Btu/lb°F)
Ta-Tb = TD (°F)
Q = ρ x V x Cp x (Ta-Tb)

ACFM to SCFM

ACFM = airflow in actual cubic feet per minute

P = gage pressure (psi)

T = gas temperature °R = 460 + °F

SCFM = airflow in standard cubic feet per minute


Find Standard Cubic Feet per Minute based on data from your Actual Cubic Feet per Minute Rotameter

airflow in actual cubic feet per minute
gage pressure (psi)
gas temperature °R = 460 + °F
airflow in standard cubic feet per minute

Standard Flow Rate (SCFM) Calculator

Calculate the SCFM.
Actual cubic feet per minute
Actual pounds per square inch at Gauge
Actual temperature in °F. °R = 460 + °F
CFM * (PSI actual / 14.7psi)*(528°R / T actual)

Pressure Conversion

Fill in one value to calculate the other.
PSI = Bar * 14.504
Bar = PSI / 14.504

Mass Flow to volume Metric Flow

Fill in one value to calculate the other two
Kg/h = Kilogram Per Hour (lb/min multiply by 27.216)
Lbs/min = Pounds per minute (kg/h divide by 27.216)
SCFM = Standard cubic feet per minute