Shop threaded pipe coupling

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$44.05
Coupling: Malleable Iron, 4 in X 4 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 2WU61
Grainger
$44.05
Coupling: Malleable Iron, 4 in X 4 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 2WU61
Grainger
$6.43
Coupling: Malleable Iron, 1 1/2 in X 1 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 5P556
Grainger
$6.43
Coupling: Malleable Iron, 1 1/2 in X 1 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 5P556
Grainger
$10.89
Coupling: Malleable Iron, 3/4 in X 3/4 in Fitting Pipe Size, Female NPT X Female NPT, Class 300 Model: 1LBY6
Grainger
$10.89
Coupling: Malleable Iron, 3/4 in X 3/4 in Fitting Pipe Size, Female NPT X Female NPT, Class 300 Model: 1LBY6
Grainger
$15.10
Coupling: Forged Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 3000 Model: 1MNA5
Grainger
$15.10
Coupling: Forged Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 3000 Model: 1MNA5
Grainger
$16.88
Coupling: 304 Stainless Steel, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 2UA51
Grainger
$16.88
Coupling: 304 Stainless Steel, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 2UA51
Grainger
$17.30
Value Collection Black Coupling: 3/4", Threaded - Malleable Iron, Class 150
MSC Direct
$17.30
Value Collection Black Coupling: 3/4", Threaded - Malleable Iron, Class 150
MSC Direct
$64.78
Value Collection Black Coupling: 2", Threaded - Malleable Iron, Class 150
MSC Direct
$64.78
Value Collection Black Coupling: 2", Threaded - Malleable Iron, Class 150
MSC Direct
$37.03
Coupling: 304 Stainless Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 3000 Model: 4307000064
Grainger
$37.03
Coupling: 304 Stainless Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 3000 Model: 4307000064
Grainger
$70.48
Merchant Coupling: Steel, 4 in X 4 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 4HVG9
Grainger
$70.48
Merchant Coupling: Steel, 4 in X 4 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 4HVG9
Grainger
$20.66
1-1/2 in. NPT Threaded - Full Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$20.66
1-1/2 in. NPT Threaded - Full Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$47.93
1-1/4 in. NPT Threaded - Black API 5L XH Recessed Style Merchant Coupling Pipe Fitting
BFO
$47.93
1-1/4 in. NPT Threaded - Black API 5L XH Recessed Style Merchant Coupling Pipe Fitting
BFO
$24.67
Reducing Coupling: Malleable Iron, 1 1/4 in X 3/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKT7
Grainger
$24.67
Reducing Coupling: Malleable Iron, 1 1/4 in X 3/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKT7
Grainger
$40.28
1-1/2 in. NPT Threaded - Full Coupling - 1000 Barstock 316 Stainless Steel Pipe Fitting
BFO
$40.28
1-1/2 in. NPT Threaded - Full Coupling - 1000 Barstock 316 Stainless Steel Pipe Fitting
BFO
$25.48
2-1/2 in. NPT Threaded - Banded Full Coupling - 150 A197 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$25.48
2-1/2 in. NPT Threaded - Banded Full Coupling - 150 A197 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$33.60
Coupling: 304 Stainless Steel, 2 in X 2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 40FC111N020
Grainger
$33.60
Coupling: 304 Stainless Steel, 2 in X 2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 40FC111N020
Grainger
$111.16
3 in. X 1-1/4 in. NPT Threaded - Reducing Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$111.16
3 in. X 1-1/4 in. NPT Threaded - Reducing Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$10.83
Reducing Coupling: Forged Steel, 3/4 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 1MNH2
Grainger
$10.83
Reducing Coupling: Forged Steel, 3/4 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 1MNH2
Grainger
$8.09
Reducing Coupling: Malleable Iron, 1/2 in X 1/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKR9
Grainger
$8.09
Reducing Coupling: Malleable Iron, 1/2 in X 1/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKR9
Grainger
$8.59
2" Schedule 40 PVC Coupling Threaded, 430-020
PVC Pipe Supplies
$8.59
2" Schedule 40 PVC Coupling Threaded, 430-020
PVC Pipe Supplies
$28.84
JME 2 in. Aluminum Straight Pipe Coupling - Threaded - 44705K371
John M. Ellsworth Co., Inc.
$28.84
JME 2 in. Aluminum Straight Pipe Coupling - Threaded - 44705K371
John M. Ellsworth Co., Inc.
$40.40
Value Collection Black Coupling: 2", Threaded - Malleable Iron, Class 150 | 2-Pack | 2-Pack
MSC Direct
$40.40
Value Collection Black Coupling: 2", Threaded - Malleable Iron, Class 150 | 2-Pack | 2-Pack
MSC Direct
$4.33
Coupling: Malleable Iron, 1 in X 1 In, NPT X NPT, Class 150 Model: 5P921
Grainger
$4.33
Coupling: Malleable Iron, 1 in X 1 In, NPT X NPT, Class 150 Model: 5P921
Grainger
$20.85
Smith Cooper Cast 150 Stainless Steel 1 1/2 in. Full Coupling Fitting - Threaded - Fig. S3116CP - 4381034270
John M. Ellsworth Co., Inc.
$20.85
Smith Cooper Cast 150 Stainless Steel 1 1/2 in. Full Coupling Fitting - Threaded - Fig. S3116CP - 4381034270
John M. Ellsworth Co., Inc.
$14.22
Coupling: 316 Stainless Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 60FC111N010
Grainger
$14.22
Coupling: 316 Stainless Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 60FC111N010
Grainger
$11.59
Megairon 2" X 2" NPT Male Threaded Hex Nipple,Stainless Steel 304 Quick Coupler Pipe Fitting
Amazon.com
149
$11.59
Megairon 2" X 2" NPT Male Threaded Hex Nipple,Stainless Steel 304 Quick Coupler Pipe Fitting
Amazon.com
$398.69
JME Threaded Merchant Steel Full Couplings - BSC-8
John M. Ellsworth Co., Inc.
$398.69
JME Threaded Merchant Steel Full Couplings - BSC-8
John M. Ellsworth Co., Inc.
$19.99
Coupling: 316 Stainless Steel, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 2TY83
Grainger
$19.99
Coupling: 316 Stainless Steel, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 2TY83
Grainger
$26.07
1-1/4 in. NPT Threaded - Recessed Drop Coupling - 150 Cast 304 Stainless Steel Pipe Fitting
BFO
$26.07
1-1/4 in. NPT Threaded - Recessed Drop Coupling - 150 Cast 304 Stainless Steel Pipe Fitting
BFO
$3.99
1" Schedule 80 PVC Coupling Threaded, 830-010
PVC Pipe Supplies
$3.99
1" Schedule 80 PVC Coupling Threaded, 830-010
PVC Pipe Supplies
$100.77
3-1/2 in. NPT Threaded (Taper Tapped) - Full Coupling - 150 Galvanized Merchant Steel Pipe Fitting
BFO
$100.77
3-1/2 in. NPT Threaded (Taper Tapped) - Full Coupling - 150 Galvanized Merchant Steel Pipe Fitting
BFO
$6.63
Merchant Coupling: Steel, 1 in X 1 in Fitting Pipe Size, NPT X Female NPT, Class 150 Model: 71105
Grainger
$6.63
Merchant Coupling: Steel, 1 in X 1 in Fitting Pipe Size, NPT X Female NPT, Class 150 Model: 71105
Grainger
$20.83
Half Coupling: Forged Steel, 2 in X 2 in Fitting Pipe Size, Female NPT, Class 3000 Model: 1MNC2
Grainger
$20.83
Half Coupling: Forged Steel, 2 in X 2 in Fitting Pipe Size, Female NPT, Class 3000 Model: 1MNC2
Grainger
$159.83
5 in. NPT Threaded (Taper Tapped) - Full Coupling - Schedule 40 Black Merchant Steel Pipe Fitting
BFO
1
$159.83
5 in. NPT Threaded (Taper Tapped) - Full Coupling - Schedule 40 Black Merchant Steel Pipe Fitting
BFO
$25.33
1-1/4 in. NPT Threaded - Banded Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$25.33
1-1/4 in. NPT Threaded - Banded Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$33.43
2-1/2 in. NPT Threaded - Banded Full Coupling - 150 A197 Galvanized Malleable Iron Pipe Fitting - UL/FM
BFO
$33.43
2-1/2 in. NPT Threaded - Banded Full Coupling - 150 A197 Galvanized Malleable Iron Pipe Fitting - UL/FM
BFO
$71.87
4 in. NPT Threaded - Half Coupling - 150 Cast 304 Stainless Steel Pipe Fitting
BFO
$71.87
4 in. NPT Threaded - Half Coupling - 150 Cast 304 Stainless Steel Pipe Fitting
BFO
How to Make Threaded Pipe Connections
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Many pipe threads including black, galvanized, and PVC are tapered, meaning that the thread is smaller on the end and gradually gets bigger as it goes up the pipe. As fittings travel up the thread, the connection becomes tighter, but not liquid-tight. Thread sealants are used to get a liquid-tight connection. Teflon tape or liquid thread ...
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Shop threaded pipe coupling

Sponsored
About our ads
$24.67
Reducing Coupling: Malleable Iron, 1 1/4 in X 3/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKT7
Grainger
$24.67
Reducing Coupling: Malleable Iron, 1 1/4 in X 3/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKT7
Grainger
$33.60
Coupling: 304 Stainless Steel, 2 in X 2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 40FC111N020
Grainger
$33.60
Coupling: 304 Stainless Steel, 2 in X 2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 40FC111N020
Grainger
$10.83
Reducing Coupling: Forged Steel, 3/4 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 1MNH2
Grainger
$10.83
Reducing Coupling: Forged Steel, 3/4 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 1MNH2
Grainger
$8.09
Reducing Coupling: Malleable Iron, 1/2 in X 1/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKR9
Grainger
$8.09
Reducing Coupling: Malleable Iron, 1/2 in X 1/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKR9
Grainger
$4.33
Coupling: Malleable Iron, 1 in X 1 In, NPT X NPT, Class 150 Model: 5P921
Grainger
$4.33
Coupling: Malleable Iron, 1 in X 1 In, NPT X NPT, Class 150 Model: 5P921
Grainger
$40.28
1-1/2 in. NPT Threaded - Full Coupling - 1000 Barstock 316 Stainless Steel Pipe Fitting
BFO
$40.28
1-1/2 in. NPT Threaded - Full Coupling - 1000 Barstock 316 Stainless Steel Pipe Fitting
BFO
$25.48
2-1/2 in. NPT Threaded - Banded Full Coupling - 150 A197 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$25.48
2-1/2 in. NPT Threaded - Banded Full Coupling - 150 A197 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$111.16
3 in. X 1-1/4 in. NPT Threaded - Reducing Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$111.16
3 in. X 1-1/4 in. NPT Threaded - Reducing Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$8.59
2" Schedule 40 PVC Coupling Threaded, 430-020
PVC Pipe Supplies
$8.59
2" Schedule 40 PVC Coupling Threaded, 430-020
PVC Pipe Supplies
$26.07
1-1/4 in. NPT Threaded - Recessed Drop Coupling - 150 Cast 304 Stainless Steel Pipe Fitting
BFO
$26.07
1-1/4 in. NPT Threaded - Recessed Drop Coupling - 150 Cast 304 Stainless Steel Pipe Fitting
BFO
$100.77
3-1/2 in. NPT Threaded (Taper Tapped) - Full Coupling - 150 Galvanized Merchant Steel Pipe Fitting
BFO
$100.77
3-1/2 in. NPT Threaded (Taper Tapped) - Full Coupling - 150 Galvanized Merchant Steel Pipe Fitting
BFO
$28.84
JME 2 in. Aluminum Straight Pipe Coupling - Threaded - 44705K371
John M. Ellsworth Co., Inc.
$28.84
JME 2 in. Aluminum Straight Pipe Coupling - Threaded - 44705K371
John M. Ellsworth Co., Inc.
$40.40
Value Collection Black Coupling: 2", Threaded - Malleable Iron, Class 150 | 2-Pack | 2-Pack
MSC Direct
$40.40
Value Collection Black Coupling: 2", Threaded - Malleable Iron, Class 150 | 2-Pack | 2-Pack
MSC Direct
$20.85
Smith Cooper Cast 150 Stainless Steel 1 1/2 in. Full Coupling Fitting - Threaded - Fig. S3116CP - 4381034270
John M. Ellsworth Co., Inc.
$20.85
Smith Cooper Cast 150 Stainless Steel 1 1/2 in. Full Coupling Fitting - Threaded - Fig. S3116CP - 4381034270
John M. Ellsworth Co., Inc.
$14.22
Coupling: 316 Stainless Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 60FC111N010
Grainger
$14.22
Coupling: 316 Stainless Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 60FC111N010
Grainger
$11.59
Megairon 2" X 2" NPT Male Threaded Hex Nipple,Stainless Steel 304 Quick Coupler Pipe Fitting
Amazon.com
149
$11.59
Megairon 2" X 2" NPT Male Threaded Hex Nipple,Stainless Steel 304 Quick Coupler Pipe Fitting
Amazon.com
$398.69
JME Threaded Merchant Steel Full Couplings - BSC-8
John M. Ellsworth Co., Inc.
$398.69
JME Threaded Merchant Steel Full Couplings - BSC-8
John M. Ellsworth Co., Inc.
$19.99
Coupling: 316 Stainless Steel, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 2TY83
Grainger
$19.99
Coupling: 316 Stainless Steel, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 2TY83
Grainger

Shop threaded pipe coupling

Sponsored
About our ads
$44.05
Coupling: Malleable Iron, 4 in X 4 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 2WU61
Grainger
$44.05
Coupling: Malleable Iron, 4 in X 4 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 2WU61
Grainger
$6.43
Coupling: Malleable Iron, 1 1/2 in X 1 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 5P556
Grainger
$6.43
Coupling: Malleable Iron, 1 1/2 in X 1 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 5P556
Grainger
$10.89
Coupling: Malleable Iron, 3/4 in X 3/4 in Fitting Pipe Size, Female NPT X Female NPT, Class 300 Model: 1LBY6
Grainger
$10.89
Coupling: Malleable Iron, 3/4 in X 3/4 in Fitting Pipe Size, Female NPT X Female NPT, Class 300 Model: 1LBY6
Grainger
$15.10
Coupling: Forged Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 3000 Model: 1MNA5
Grainger
$15.10
Coupling: Forged Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 3000 Model: 1MNA5
Grainger
$16.88
Coupling: 304 Stainless Steel, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 2UA51
Grainger
$16.88
Coupling: 304 Stainless Steel, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 2UA51
Grainger
$17.30
Value Collection Black Coupling: 3/4", Threaded - Malleable Iron, Class 150
MSC Direct
$17.30
Value Collection Black Coupling: 3/4", Threaded - Malleable Iron, Class 150
MSC Direct
$64.78
Value Collection Black Coupling: 2", Threaded - Malleable Iron, Class 150
MSC Direct
$64.78
Value Collection Black Coupling: 2", Threaded - Malleable Iron, Class 150
MSC Direct
$37.03
Coupling: 304 Stainless Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 3000 Model: 4307000064
Grainger
$37.03
Coupling: 304 Stainless Steel, 1 in X 1 in Fitting Pipe Size, Female NPT X Female NPT, Class 3000 Model: 4307000064
Grainger
$70.48
Merchant Coupling: Steel, 4 in X 4 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 4HVG9
Grainger
$70.48
Merchant Coupling: Steel, 4 in X 4 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 4HVG9
Grainger
$20.66
1-1/2 in. NPT Threaded - Full Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$20.66
1-1/2 in. NPT Threaded - Full Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$47.93
1-1/4 in. NPT Threaded - Black API 5L XH Recessed Style Merchant Coupling Pipe Fitting
BFO
$47.93
1-1/4 in. NPT Threaded - Black API 5L XH Recessed Style Merchant Coupling Pipe Fitting
BFO
$24.67
Reducing Coupling: Malleable Iron, 1 1/4 in X 3/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKT7
Grainger
$24.67
Reducing Coupling: Malleable Iron, 1 1/4 in X 3/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKT7
Grainger
$40.28
1-1/2 in. NPT Threaded - Full Coupling - 1000 Barstock 316 Stainless Steel Pipe Fitting
BFO
$40.28
1-1/2 in. NPT Threaded - Full Coupling - 1000 Barstock 316 Stainless Steel Pipe Fitting
BFO
$25.48
2-1/2 in. NPT Threaded - Banded Full Coupling - 150 A197 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$25.48
2-1/2 in. NPT Threaded - Banded Full Coupling - 150 A197 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$33.60
Coupling: 304 Stainless Steel, 2 in X 2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 40FC111N020
Grainger
$33.60
Coupling: 304 Stainless Steel, 2 in X 2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 40FC111N020
Grainger
$111.16
3 in. X 1-1/4 in. NPT Threaded - Reducing Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$111.16
3 in. X 1-1/4 in. NPT Threaded - Reducing Coupling - 150 Cast 316 Stainless Steel Pipe Fitting
BFO
$10.83
Reducing Coupling: Forged Steel, 3/4 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 1MNH2
Grainger
$10.83
Reducing Coupling: Forged Steel, 3/4 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 1MNH2
Grainger
$8.09
Reducing Coupling: Malleable Iron, 1/2 in X 1/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKR9
Grainger
$8.09
Reducing Coupling: Malleable Iron, 1/2 in X 1/4 in Fitting Pipe Size, Female NPT X Female NPT Model: 1XKR9
Grainger