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Watlow 2-1/2" NPT Screw Plug Heater Ordering
Code Prefixes - BLC, BLN, BLNA, BLR, BLS
To order, complete the form below by selecting the options desired in each category. Then click the "submit" button.
The part number and price will be displayed on the next page.
1. Select Base Screw Plug Heater

Code No. Style Volts kW Immersed
Length "B"		 Price
Application: Deionized Water, Demineralized Water
BLR77L1 2-1/2" NPT
60 W/In²
316SS Plug,
3-316SS
Passivated
Watrod
Elements		 120 1-ph 3.0 7-5/8" $1348.00
BLR77L3 240 3-ph 3.0 7-5/8" $1348.00
BLR77L5 480 3-ph 3.0 7-5/8" $1348.00
BLR710L1 120 1-ph 4.5 10-5/8" $1365.00
BLR710L3 240 3-ph 4.5 10-5/8" $1365.00
BLR710L5 480 3-ph 4.5 10-5/8" $1365.00
BLR714L3 240 3-ph 6.0 14-5/8" $1389.00
BLR714L5 480 3-ph 6.0 14-5/8" $1389.00
BLR717L3 240 3-ph 7.5 17-5/8" $1406.00
BLR717L5 480 3-ph 7.5 17-5/8" $1406.00
BLR720L3 240 3-ph 9.0 20-5/8" $1422.00
BLR720L5 480 3-ph 9.0 20-5/8" $1422.00
BLR726C3 240 3-ph 12.0 26-1/8" $1487.00
BLR726C5 480 3-ph 12.0 26-1/8" $1487.00
BLR731L3 240 3-ph 15.0 31-5/8" $1526.00
BLR731L5 480 3-ph 15.0 31-5/8" $1526.00
BLR737C3 240 3-ph 18.0 37-1/8" $1562.00
BLR737C5 480 3-ph 18.0 37-1/8" $1562.00
Application: Clean Water
BLC77L1 2-1/2" NPT
60 W/In²
Brass Plug,
3-Copper
Watrod
Elements		 120 1-ph 3.0 7-5/8" $288.00
BLC77L3 240 3-ph 3.0 7-5/8" $288.00
BLC77L13 480 3-ph 3.0 7-5/8" $288.00
BLC710L1 120 1-ph 4.5 10-5/8" $360.00
BLC710L3 240 3-ph 4.5 10-5/8" $360.00
BLC610K13 480 3-ph 4.5 10-5/8" $360.00
BLC714L3 240 3-ph 6.0 14-5/8" $425.00
BLC714L5 480 3-ph 6.0 14-5/8" $425.00
BLC717L3 240 3-ph 7.5 17-5/8" $472.00
BLC717L5 480 3-ph 7.5 17-5/8" $472.00
BLC720L3 240 3-ph 9.0 20-5/8" $550.00
BLC720L5 480 3-ph 9.0 20-5/8" $550.00
BLC726C3 240 3-ph 12.0 26-1/8" $650.00
BLC726C5 480 3-ph 12.0 26-1/8" $650.00
BLC731L3 240 3-ph 15.0 31-5/8" $760.00
BLC731L5 480 3-ph 15.0 31-5/8" $760.00
BLC737C3 240 3-ph 18.0 37-1/8" $866.00
BLC737C5 480 3-ph 18.0 37-1/8" $866.00
Application: Process Water
BLN79G1 2-1/2" NPT
48 W/In²
304SS Plug,
3-Incoloy
Watrod
Elements		 120 1-ph 3.0 9-3/8" $530.00
BLN79G3 240 3-ph 3.0 9-3/8" $530.00
BLN79G5 480 3-ph 3.0 9-3/8" $530.00
BLN712R1 120 1-ph 4.5 12-7/8" $609.00
BLN712R3 240 3-ph 4.5 12-7/8" $609.00
BLN712R5 480 3-ph 4.5 12-7/8" $609.00
BLN717G3 240 3-ph 6.0 17-3/8" $675.00
BLN717G5 480 3-ph 6.0 17-3/8" $675.00
BLN719R3 240 3-ph 7.5 19-7/8" $771.00
BLN719R5 480 3-ph 7.5 19-7/8" $771.00
BLN724R3 240 3-ph 9.0 24-7/8" $868.00
BLN724R5 480 3-ph 9.0 24-7/8" $868.00
BLN732G3 240 3-ph 12.0 32-3/8" $1051.00
BLN732G5 480 3-ph 12.0 32-3/8" $1051.00
BLN739R3 240 3-ph 15.0 39-7/8" $1239.00
BLN739R5 480 3-ph 15.0 39-7/8" $1239.00
BLN747G3 240 3-ph 18.0 47-3/8" $1407.00
BLN747G5 480 3-ph 18.0 47-3/8" $1407.00
Applications: Forced Air and Gases, Caustic Solutions, Degreasing Solutions
BLNA17G1 2-1/2" NPT
23 W/In²
304SS Plug,
3-Incoloy
Watrod
Elements		 120 1-ph 3.0 17-3/8" $675.00
BLNA17G3 240 3-ph 3.0 17-3/8" $675.00
BLNA17G5 480 3-ph 3.0 17-3/8" $675.00
BLNA24R1 120 1-ph 4.5 24-7/8" $868.00
BLNA24R3 240 3-ph 4.5 24-7/8" $868.00
BLNA24R5 480 3-ph 4.5 24-7/8" $868.00
BLNA32G3 240 3-ph 6.0 32-3/8" $1051.00
BLNA32G5 480 3-ph 6.0 32-3/8" $1051.00
BLNA39R3 240 3-ph 7.5 39-7/8" $1239.00
BLNA39R5 480 3-ph 7.5 39-7/8" $1239.00
BLNA47G3 240 3-ph 9.0 47-3/8" $1407.00
BLNA47G5 480 3-ph 9.0 47-3/8" $1407.00
BLNA63R3 240 3-ph 12.5 63-7/8" $1575.00
BLNA63R5 480 3-ph 12.5 63-7/8" $1575.00
BLNA76G3 240 3-ph 15.0 76-3/8" $1738.00
BLNA76G5 480 3-ph 15.0 76-3/8" $1738.00
Applications: Lightweight Oils, Degreasing Solutions, Heat Transfer Oils
BLS717E1 2-1/2" NPT
23 W/In²
Steel Plug,
3-Steel
Watrod
Elements		 120 1-ph 3.0 17-1/4" $414.00
BLS717E3 240 3-ph 3.0 17-1/4" $414.00
BLS717E5 480 3-ph 3.0 17-1/4" $414.00
BLS724N1 120 1-ph 4.5 24-3/4" $530.00
BLS724N3 240 3-ph 4.5 24-3/4" $530.00
BLS724N5 480 3-ph 4.5 24-3/4" $530.00
BLS732E3 240 3-ph 6.0 32-1/4" $647.00
BLS732E5 480 3-ph 6.0 32-1/4" $647.00
BLS739N3 240 3-ph 7.5 39-3/4" $765.00
BLS739N5 480 3-ph 7.5 39-3/4" $765.00
BLS747E3 240 3-ph 9.0 47-1/4" $859.00
BLS747E5 480 3-ph 9.0 47-1/4" $859.00
BLS763N3 240 3-ph 12.5 63-3/4" $1017.00
BLS763N5 480 3-ph 12.5 63-3/4" $1017.00
BLS776E3 240 3-ph 15.0 76-1/4" $1221.00
BLS776E5 480 3-ph 15.0 76-1/4" $1221.00
Applications: Medium Weight Oils, Heat Transfer Oils, Liquid Paraffin
BLN79G12 2-1/2" NPT
16 W/In²
304SS Plug,
3-Incoloy
Watrod
Elements		 240 3-ph 1.0 9-3/8" $530.00
BLN79G13 480 3-ph 1.0 9-3/8" $530.00
BLN712R12 240 3-ph 1.5 12-7/8" $609.00
BLN712R13 480 3-ph 1.5 12-7/8" $609.00
BLN717G12 240 3-ph 2.0 17-3/8" $675.00
BLN717G13 480 3-ph 2.0 17-3/8" $675.00
BLN719R12 240 3-ph 2.5 19-7/8" $771.00
BLN719R13 480 3-ph 2.5 19-7/8" $771.00
BLN724R12 240 3-ph 3.0 24-7/8" $868.00
BLN724R13 480 3-ph 3.0 24-7/8" $868.00
BLN732G12 240 3-ph 4.0 32-3/8" $1051.00
BLN732G13 480 3-ph 4.0 32-3/8" $1051.00
BLN739R12 240 3-ph 5.0 39-7/8" $1239.00
BLN739R13 480 3-ph 5.0 39-7/8" $1239.00
BLN747G12 240 3-ph 6.0 47-3/8" $1407.00
BLN747G13 480 3-ph 6.0 47-3/8" $1407.00
Applications: Bunker C and #6 Fuel Oils
BLS717E12 2-1/2" NPT
8 W/In²
Steel Plug,
3-Steel
Watrod
Elements		 240 3-ph 1.0 17-1/4" $414.00
BLS717E13 480 3-ph 1.0 17-1/4" $414.00
BLS724N12 240 3-ph 1.5 24-3/4" $530.00
BLS724N13 480 3-ph 1.5 24-3/4" $530.00
BLS732E12 240 3-ph 2.0 32-1/4" $647.00
BLS732E13 480 3-ph 2.0 32-1/4" $647.00
BLS739N12 240 3-ph 2.5 39-3/4" $765.00
BLS739N13 480 3-ph 2.5 39-3/4" $765.00
BLS747E12 240 3-ph 3.0 47-1/4" $859.00
BLS747E13 480 3-ph 3.0 47-1/4" $859.00
BLS763N12 240 3-ph 4.0 63-3/4" $1017.00
BLS763N13 480 3-ph 4.0 63-3/4" $1017.00
BLS776E12 240 3-ph 5.0 76-1/4" $1221.00
BLS776E13 480 3-ph 5.0 76-1/4" $1221.00

2. Select Terminal Enclosure Type (price shown is for enclosure only option)
 Price
S = General Purpose Enclosure (NEMA 1)
 N/A
W = Moisture Resistant Enclosure (NEMA 4)
 $172.00
E = Explosion Resistant Enclosure (NEMA 7)
 $172.00
C = Explosion/Moisture Resistant Enclosure (NEMA 7/4)
 $191.00

3. Process Thermocouple / Thermostat Option
 Price "S"
Enclosure		 Price "W"
Enclosure		 Price "E"
Enclosure		 Price "C"
Enclsoure
None
N/A N/A N/A N/A
J = Type J Process Thermcouple
 $187.00 $359.00 $359.00 $378.00
K = Type K Process Thermocouple
 $187.00 $359.00 $359.00 $378.00
1 = #1 SPST Tstat, 30-110°F
 $270.00 $400.00 $620.00 $660.00
2 = #2 SPST Tstat, 30-250°F
 $270.00 $400.00 $620.00 $660.00
3 = #3 SPST Tstat, 175-550°F
 $270.00 $400.00 $620.00 $660.00
4 = #4 DPST Tstat, 30-110°F
 $319.00 $531.00 $721.00 $766.00
5A = #5A DPST Tstat, 60-250°F
 $319.00 $531.00 $721.00 $766.00
7A = #7A DPST Tstat, 100-550°F
 $319.00 $531.00 $721.00 $76600
8 = #8 DPST Hi-Limit Tstat, 60-250°F
 $623.00 $834.00 $1026.00 $1085.00
9 = #9 DPST Hi-Limit Tstat, 100-550°F
 $623.00 $834.00 $1026.00 $1085.00
11 = #11 SPST Hi-Limit Tstat, 350°F
 $270.00 $400.00 $620.00 $66000
12A = #12A SPST Tstat, 60-160°F
 $270.00 $400.00 $620.00 $660.00

4. Over-Temperature Thermocouple Option
 Price "S"
Enclosure		 Price "W"
Enclosure		 Price "E"
Enclosure		 Price "C"
Enclsoure
None
N/A N/A N/A N/A
JH = Type J Over-Temp Thermcouple - Horizontal mounting
 $243.00 $243.00 $243.00 $243.00
JU = Type J Over-Temp Thermcouple - Vertical Up mounting
 $243.00 $243.00 $243.00 $243.00
JD = Type J Over-Temp Thermcouple - Vertical Down mounting
 $243.00 $243.00 $243.00 $243.00
KH = Type K Over-Temp Thermcouple - Horizontal mounting
 $243.00 $243.00 $243.00 $243.00
KU = Type K Over-Temp Thermcouple - Vertical Up mounting
 $243.00 $243.00 $243.00 $243.00
KD = Type K Over-Temp Thermcouple - Vertical Down mounting
 $243.00 $243.00 $243.00 $243.00


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