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Kemper 3000# Industrial Unions are manufactured from forged and normalized carbon steel to ASTM A105
and precision machined in dimensional compliance with MSS SP 83. Based on the original design standard from
the Association of American Railroads, Kemper produces the widest varity of 3000# forged steel union types available today.
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3000# NPT End AAR Unions ASTM A-105
(Steel to Steel)
Size (inches) |
Part Number |
Weight lbs. |
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| 1/4" |
704100 |
0.4 |
| 3/8" |
706100A |
0.72 |
| 1/2" |
708100A |
0.8 |
| 3/4" |
712100 |
1.3 |
| 1" |
716100 |
1.666 |
| 1¼" |
720100 |
2.5 |
| 1½" |
724100 |
3.228 |
| 2" |
732100 |
5 |
| 2½" |
740100 |
8.142 |
| 3" |
748100 |
12.8 |
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3000# NPT End AAR Unions ASTM A-105
(Bronze to Bronze)
Size (inches) |
Part Number |
Weight lbs. |
| |
| 1/4" |
704400 |
0.4 |
| 3/8" |
706400A |
0.7 |
| 1/2" |
708400A |
0.686 |
| 3/4" |
712400 |
1.17 |
| 1" |
716400 |
1.666 |
| 1¼" |
720400 |
2.6 |
| 1½" |
724400 |
3.23 |
| 2" |
732400 |
5 |
| 2½" |
- |
- |
| 3" |
- |
- |
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3000# Socket Weld AAR Unions ASTM A-105
(Bronze to Steel)
Size (inches) |
Part Number |
Weight lbs. |
| |
1/4" |
704300 |
0.4 |
3/8" |
706300A |
0.55 |
1/2" |
708300A |
0.686 |
3/4" |
712300 |
0.9 |
| 1" |
716300 |
2.1 |
1¼" |
720300 |
1.8 |
1½" |
724300 |
3.23 |
2" |
732300 |
5 |
2½" |
- |
- |
3" |
- |
- |
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3000# Socket Weld AAR Unions ASTM A-105
(Steel to Steel)
Size (inches) |
Part Number |
Weight lbs. |
| |
1/4" |
704110 |
0.4 |
3/8" |
706110A |
0.72 |
1/2" |
708110A |
0.8 |
3/4" |
712100 |
1.3 |
| 1" |
716100 |
1.666 |
1¼" |
720100 |
2.5 |
1½" |
724100 |
3.228 |
2" |
732100 |
5 |
2½" |
740100 |
8.142 |
3" |
748100 |
12.8 |
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3000# NPT End High Speed Unions ASTM A-105 (Steel to Steel)
Size (inches) |
Part Number |
Weight lbs. |
| |
1/4" |
- |
- |
3/8" |
906110A |
0.72 |
1/2" |
908110A |
0.8 |
3/4" |
912100 |
1.4 |
| 1" |
916100 |
1.666 |
1¼" |
920100 |
2.5 |
1½ |
924100 |
3.228 |
2" |
932100 |
5.2 |
2½" |
940100 |
8.142 |
3" |
948100 |
12.8 |
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3000# NPT End High Speed Unions ASTM A-105 (Flat-Face O-Ring)
Size (inches) |
Part Number |
Weight lbs. |
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1/4" |
904500 |
- |
3/8" |
906500A |
0.72 |
1/2" |
908500A |
0.8 |
3/4" |
912500 |
1.3 |
| 1" |
916500 |
2.1 |
1¼" |
920500 |
2.6 |
1½ |
924500 |
3.4 |
2" |
932500 |
5 |
2½" |
940500 |
8.142 |
3" |
948500 |
12.8 |
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3000# NPT End High Speed Insulated Unions ASTM A-105 (O'Ring to Insulated)
Size (inches) |
Part Number |
Weight lbs. |
| |
1/4" |
904600 |
0.338 |
3/8" |
- |
- |
1/2" |
908600A |
0.9 |
3/4" |
912600 |
1.3 |
| 1" |
916600 |
2.1 |
1¼" |
920600 |
2.6 |
1½" |
924600 |
3.228 |
2" |
932600 |
5 |
2½ |
940600 |
8.142 |
3" |
948600 |
12.8 |
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3000# Socket Weld High Speed Unions ASTM A-105 (Steel to Steel)
Size (inches) |
Part Number |
Weight lbs. |
| |
1/4" |
- |
- |
3/8" |
906110A |
0.72 |
1/2" |
908110A |
0.8 |
3/4" |
912110 |
1.2 |
| 1" |
916110 |
1.666 |
1¼" |
920110 |
2.5 |
1½" |
924110 |
3.228 |
2" |
932110 |
5 |
2½" |
940110 |
8.142 |
3" |
948110 |
12.4 |
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3000# Socket Weld High Speed Unions ASTM A-105 (Flat-Face O-Ring)
Size (inches) |
Part Number |
Weight lbs. |
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1/4" |
- |
- |
3/8" |
906510A |
0.72 |
1/2" |
908510A |
0.8 |
3/4" |
912510 |
1.25 |
| 1" |
916510 |
2 |
1¼" |
920510 |
2.5 |
1½" |
924510 |
3.228 |
2" |
932510 |
5 |
2½" |
940510 |
8.142 |
3" |
948510 |
12.4 |
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3000# Orifice Unions (Non-Tabbed Style) (Steel to Steel)
Size (inches) |
Part Number |
Weight lbs. |
| |
1/4" |
704104 |
0.4 |
3/8" |
- |
- |
1/2" |
708104A |
0.8 |
3/4" |
712104 |
1.3 |
| 1" |
716104 |
1.666 |
1¼" |
720104 |
2.5 |
1½" |
724104 |
3.228 |
2" |
732104 |
5.1 |
2½" |
- |
- |
3" |
- |
- |
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3000# NPT End Lug Nut Union ASTM A-105 (Steel to Steel)
Size (inches) |
Part Number |
Weight lbs. |
| |
1/4" |
- |
- |
3/8" |
806100A |
0.7 |
1/2" |
808100A |
1 |
3/4" |
812100 |
1.426 |
| 1" |
816100 |
1.8 |
1¼" |
820100 |
2.93 |
1½" |
824100 |
4 |
2" |
832100 |
6 |
2½" |
840100 |
10.25 |
3" |
848100 |
14 |
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3000# NPT End Lug Nut Union ASTM A-105 (Flat-Face O-Ring)
Size (inches) |
Part Number |
Weight lbs. |
| |
1/4" |
804500 |
- |
3/8" |
806500A |
0.7 |
1/2" |
808500A |
1 |
3/4" |
812500 |
1.4 |
| 1" |
816500 |
2.037 |
1¼" |
820500 |
2.9 |
1½" |
824500 |
4 |
2" |
832500 |
6.15 |
2½" |
840500 |
10.25 |
3" |
848500 |
14 |
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3000# NPT End Lug Nut Insulated Union ASTM A-105 (O-Ring to Insulated)
Size (inches) |
Part Number |
Weight lbs. |
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1/4" |
804600 |
- |
3/8" |
- |
- |
1/2" |
808600A |
1 |
3/4" |
812600 |
1.4 |
| 1" |
816600 |
2 |
1¼" |
820600 |
2.9 |
1½" |
824600 |
4 |
2" |
832600 |
6.003 |
2½" |
840600 |
10.25 |
3" |
848600 |
13.9 |
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3000# Socket Weld Lug Nut Union ASTM A-105 (Steel to Steel)
Size (inches) |
Part Number |
Weight lbs. |
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1/4" |
- |
- |
3/8" |
806110A |
0.7 |
1/2" |
808110A |
1 |
3/4" |
812110 |
1.4 |
| 1" |
816110 |
1.8 |
1¼" |
820110 |
2.93 |
1½" |
824110 |
4 |
2" |
832110 |
6.2 |
2½" |
840110 |
10.25 |
3" |
848110 |
13.5 |
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3000# Socket Weld Lug Nut O-Ring Union ASTM A-105 (Flat-Face O-Ring)
Size (inches) |
Part Number |
Weight lbs. |
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1/4" |
- |
- |
3/8" |
806510A |
0.6 |
1/2" |
808510A |
1 |
3/4" |
812510 |
1.4 |
| 1" |
816510 |
1.8 |
1¼" |
820510 |
2.93 |
1½" |
824510 |
4 |
2" |
832510 |
6.2 |
2½" |
840510 |
10.25 |
3" |
848510 |
13.5 |
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Kemper 3000# Industrial Stainless Steel Unions
are manufactured from austenitic materials in compliance with ASTM A182 and precision
machined in dimensional compliance with MSS SP 55. Please
use the Customer Survey or Request Quote form to request pricing and delivery information from
the manufacturing plant.
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