Shop Pipe Union Coupling

Sponsored
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$762.00
DSTI Rotary Union, 2-Passage, 1/4"-18 NPT Connections, Carbon Steel (GP-220)
DSTI Store
$762.00
DSTI Rotary Union, 2-Passage, 1/4"-18 NPT Connections, Carbon Steel (GP-220)
DSTI Store
$315.00
Killark Uny8 3" Steel Male Conduit Union
New Feedonomics Feed - ARC 8/12/2025
$315.00
Killark Uny8 3" Steel Male Conduit Union
New Feedonomics Feed - ARC 8/12/2025
$43.53
2" Stainless Steel 304 150 Threaded Union 2 Inch Class 150 Pipe Fitting FNPT
Amazon.com
11
$43.53
2" Stainless Steel 304 150 Threaded Union 2 Inch Class 150 Pipe Fitting FNPT
Amazon.com
11
$25.99
PVC Union Coupling Pipe Fitting, Slip Union Schedule 40, Adapter(Socket X Socket), Built-In EPDM O-Ring, White (1 Pack)
Amazon.com
215
$25.99
PVC Union Coupling Pipe Fitting, Slip Union Schedule 40, Adapter(Socket X Socket), Built-In EPDM O-Ring, White (1 Pack)
Amazon.com
215
$22.82
Union: Brass, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 6AYY5
Grainger
1
$22.82
Union: Brass, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 6AYY5
Grainger
1
$62.64
Union: 304 Stainless Steel, 1 1/2 in X 1 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 400U111N112
Grainger
$62.64
Union: 304 Stainless Steel, 1 1/2 in X 1 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 400U111N112
Grainger
$4.95
3/8" Union Connector Polypropylene
Environmental Service Products
Free shipping
$4.95
3/8" Union Connector Polypropylene
Environmental Service Products
Free shipping
$17.99
TAISHER 2PCS 304 Stainless Steel Union3/4" NPT Female Cast Pipe Fitting
Amazon.com
18
$17.99
TAISHER 2PCS 304 Stainless Steel Union3/4" NPT Female Cast Pipe Fitting
Amazon.com
18
$75.95
Spears Schedule 40 PVC Pipe Fitting Union - Buna 3" Slip X Slip Case Of 2 457-030
Core & Main
42
$75.95
Spears Schedule 40 PVC Pipe Fitting Union - Buna 3" Slip X Slip Case Of 2 457-030
Core & Main
42
$66.73
Union: Malleable Iron, 2 1/2 in X 2 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 2WU83
Grainger
$66.73
Union: Malleable Iron, 2 1/2 in X 2 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 2WU83
Grainger
$61.96
DEKS Underground Pipe Coupling 6 Inch To 4 Inch Clay To Cast Iron Or PVC/Plastic - Single Item
Home Improvement Supply
$61.96
DEKS Underground Pipe Coupling 6 Inch To 4 Inch Clay To Cast Iron Or PVC/Plastic - Single Item
Home Improvement Supply
$4.95
Fernco 2" Flexible PVC Pipe Coupling For Cast Iron Or Plastic 1056-22
Core & Main
11
$4.95
Fernco 2" Flexible PVC Pipe Coupling For Cast Iron Or Plastic 1056-22
Core & Main
11
$37.79
3/4 in. NPT Threaded Union (Brass Seat) - 300 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$37.79
3/4 in. NPT Threaded Union (Brass Seat) - 300 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$34.95
Fernco 4" Strong Back Pipe Coupling For Cast Iron Or Plastic 1056-44RC
Core & Main
12
$34.95
Fernco 4" Strong Back Pipe Coupling For Cast Iron Or Plastic 1056-44RC
Core & Main
12
$36.94
1/4 in. NPT Threaded - Union - DOMESTIC - 150 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$36.94
1/4 in. NPT Threaded - Union - DOMESTIC - 150 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$33.49
Lasco Union 1-1/2" FIPT 458-015
PoolZoom.com
$33.49
Lasco Union 1-1/2" FIPT 458-015
PoolZoom.com
$20.95
1/4" Swagelok Compatible Compression Union Stainless Steel
Environmental Service Products
Free shipping
$20.95
1/4" Swagelok Compatible Compression Union Stainless Steel
Environmental Service Products
Free shipping
$26.16
2 in. NPT Threaded Union (Brass Seat) - 150 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$26.16
2 in. NPT Threaded Union (Brass Seat) - 150 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$592.92
816133 REXNORD - Machine Parts & Pipe And Coupling Supplies
Radwell.com
$592.92
816133 REXNORD - Machine Parts & Pipe And Coupling Supplies
Radwell.com
$26.90
Dura 2-Inch PVC Union, Slip X Slip, Each 457-020
PoolZoom.com
7
$26.90
Dura 2-Inch PVC Union, Slip X Slip, Each 457-020
PoolZoom.com
7
$0.99
1 in. PVC Pipe Union W/ EPDM O-Ring Seals Schedule-40 Pipe/Repair Fitting Slip/Socket ASTM D2466/F1970 1"
247Garden
$0.99
1 in. PVC Pipe Union W/ EPDM O-Ring Seals Schedule-40 Pipe/Repair Fitting Slip/Socket ASTM D2466/F1970 1"
247Garden
$6.95
CMP 21048-000-000 2"S PVC Union
Pool Warehouse
1
$6.95
CMP 21048-000-000 2"S PVC Union
Pool Warehouse
1
$0.99
1 in. PVC Union Female-Threaded W/ EPDM O-Ring Seals Schedule-40 Pipe Fitting ASTM D2466/F1970 1" Fnptxfnpt
247Garden
$0.99
1 in. PVC Union Female-Threaded W/ EPDM O-Ring Seals Schedule-40 Pipe Fitting ASTM D2466/F1970 1" Fnptxfnpt
247Garden
$12.23
PVC Union Fitting Female Socket 32mm X Female Rp 1' EPDM
Tameson.com
$12.23
PVC Union Fitting Female Socket 32mm X Female Rp 1' EPDM
Tameson.com
$3.99
-4 AN To -4 AN Straight Union Coupler Fitting, Blue Anodized Aluminum | Summit Racing SUM-220432
Summit Racing
1
$3.99
-4 AN To -4 AN Straight Union Coupler Fitting, Blue Anodized Aluminum | Summit Racing SUM-220432
Summit Racing
1
$866.99
ANVIL Union Union, 4" Pipe, FNPT, Malleable Iron, Class 300, 0312822828
Zoro.com
$866.99
ANVIL Union Union, 4" Pipe, FNPT, Malleable Iron, Class 300, 0312822828
Zoro.com
$36.95
Smith Cooper 3000 Forged Stainless Steel 1/2 in. Union Fitting - Threaded - Fig. S4036U - 4307002260
John M. Ellsworth Co., Inc.
$36.95
Smith Cooper 3000 Forged Stainless Steel 1/2 in. Union Fitting - Threaded - Fig. S4036U - 4307002260
John M. Ellsworth Co., Inc.
$78.50
Ever-Tite 33040BAAL, Coupler/Adapter Female Coupler X Male Adapter
MegaDepot
$78.50
Ever-Tite 33040BAAL, Coupler/Adapter Female Coupler X Male Adapter
MegaDepot
$81.15
Smith Cooper Brass 125 Lead-Free Unions - Threaded - 36U 1020L
John M. Ellsworth Co., Inc.
$81.15
Smith Cooper Brass 125 Lead-Free Unions - Threaded - 36U 1020L
John M. Ellsworth Co., Inc.
$13.70
PVC Union Fitting Female Socket 32mm X Female Rp 1' FKM
Tameson.com
$13.70
PVC Union Fitting Female Socket 32mm X Female Rp 1' FKM
Tameson.com
$31.18
2-1/2" Schedule 40 PVC Union-FPT (Lasco/Spears) 458-025
PVC Fittings Online
$31.18
2-1/2" Schedule 40 PVC Union-FPT (Lasco/Spears) 458-025
PVC Fittings Online
$13.69
CMP 1-1/2" Pump Union Sktxmip - CPVC 21063-150-000
PoolZoom.com
$13.69
CMP 1-1/2" Pump Union Sktxmip - CPVC 21063-150-000
PoolZoom.com
$289.57
0763021 REXNORD - Machine Parts & Pipe And Coupling Supplies
Radwell.com
$289.57
0763021 REXNORD - Machine Parts & Pipe And Coupling Supplies
Radwell.com
$38.29
ANVIL Union Union, 2" Pipe, FNPT, Malleable Iron, Class 150, 0312822182
Zoro.com
1
$38.29
ANVIL Union Union, 2" Pipe, FNPT, Malleable Iron, Class 150, 0312822182
Zoro.com
1
$98.40
PVC Union Fitting Female Socket 110mm X Female Rp 4' EPDM
Tameson.com
$98.40
PVC Union Fitting Female Socket 110mm X Female Rp 4' EPDM
Tameson.com
$32.59
Power Products 1/4" Brass Union | Brass Union 1/4 | BP104-4
FleetPride
$32.59
Power Products 1/4" Brass Union | Brass Union 1/4 | BP104-4
FleetPride
4 Pack 1-1/2" PVC Union Coupling Pipe Fitting (Socket x Socket), 1-1/2 inch PVC Slip Union Adapter Coupling Schedule 40, EPDM O-Ring, White SCH 40
0:30
4 Pack 1-1/2" PVC Union Coupling Pipe Fitting (Socket x Socket), 1-1/…
1 viewsFeb 21, 2024
amazon
Pipe connection by Coupling's method explained. SW // THD
1:21
Pipe connection by Coupling's method explained. SW // THD
4.7K viewsAug 2, 2023
YouTubeParallelism // Mechtect
How to connect PE COUPLER fittings | Basic plumbing
2:28
How to connect PE COUPLER fittings | Basic plumbing
199.6K viewsMar 1, 2021
YouTubeThe Millennial Carpenter
What is the Difference Between Coupling and Union Used in piping?
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What is the Difference Between Coupling and Union Used in piping?
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YouTubeHardHat Engineer
How to join G.I. Pipes using coupling
1:37
How to join G.I. Pipes using coupling
99.1K viewsMar 4, 2018
YouTubeMhatre plumbing
Installing Union Fittings
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Installing Union Fittings
28.1K viewsMar 1, 2022
YouTubeNIBCO INC.
How To Join Plastic PVC Pipe - Plumbing Tips
1:26
How To Join Plastic PVC Pipe - Plumbing Tips
182.3K viewsJun 24, 2011
YouTubeplumberparts
7:21
What are pipe unions & bushings
49K viewsMar 2, 2020
YouTubeIV University
3:59
What is pipe union? Pipe union joint l
1.9K viewsOct 18, 2021
YouTubeTechMechanica
0:56
Universal Transition Coupling (UTC) Installation Video
17.9K viewsApr 6, 2011
YouTubePhilmac
3:32
How To Use Union Repair Fittings
235.1K viewsJun 12, 2018
YouTubeSprinkler Warehouse
11:52
How to Join Plastic and Copper Pipes | Plumbing Guide for Beginn…
732.4K viewsMay 28, 2022
YouTubeThe DIY Guy
9:56
Piping Engineering : How an Union joint should be installed on pipeline
24.8K viewsMar 3, 2019
YouTubeGOURI SANKAR SAMANTA
0:28
Pipe couplings vs Pipe union
1.4K viewsNov 1, 2024
YouTubeSanvo Hebei
3:27
6 different coupling types explained by Coupling Tips
140.3K viewsMay 13, 2015
YouTubeDesign World
10:42
How to use slip couplings to tee into a rigid copper pipe
236K viewsFeb 11, 2018
YouTubeUltimate Handyman
4:29
How To Use Unions For Irrigation Systems (sprinkler repair)
12.1K viewsApr 12, 2022
YouTubePro Irrigation Training
2:31
Lokring 5-Step Pipe Connection Installation Video
84.3K viewsFeb 20, 2014
YouTubeLokring Technology, LLC.
1:03
PVC Union Joint - How It Works?
26.7K viewsApr 17, 2020
YouTubeGene Code
0:12
Complete Guide to Pipe Fittings: Elbow, Tee, Coupling, Plug, Cap, …
37.6K viewsOct 5, 2024
TikTokshi880818
1:49
Pipe Fittings - Union, Coupling, Swage. Part 3/3
74.2K viewsJan 11, 2017
YouTubeHardHat Engineer
6:21
How to Connect PEX to Copper Pipe: The Plumbers Secret- Episo…
1.1M viewsMar 8, 2017
YouTubeTileCoach
1:20
How to Insulate a Pipe Union with a PVC Union Cover
12.1K viewsAug 8, 2016
YouTubeBuyInsulation
10:01
How To Change out a union
210K viewsJan 24, 2011
YouTubeCharles Marshall
5:32
FlexPVC® Explains the difference between Couples and Unions
17.9K viewsNov 16, 2014
YouTubeFlexpvc - Use discount code YOUTUBE for 8% …
9:09
Learn PVC Pipe Basics from an expert!
39.1K viewsJan 29, 2020
YouTubeNational Hardware Supply
2:30
Victaulic Style 31 Coupling Installation Instructions
151.3K viewsJul 26, 2016
YouTubeVictaulic
1:35
Copper Pipe Connections
111.1K viewsMar 24, 2014
YouTubeSupplyHouse
13:07
HOW TO REPAIR LEAK | P.E. PIPE | G.I. UNION COUPLING | P.E. COU…
89.7K viewsApr 14, 2021
YouTubeTradesman Ph
5:46
How to tighten a Union
53.1K viewsMay 29, 2018
YouTubeJay Em
See more videos
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Shop Pipe Union Coupling

Sponsored
About our ads
$762.00
DSTI Rotary Union, 2-Passage, 1/4"-18 NPT Connections, Carbon Steel (GP-220)
DSTI Store
$762.00
DSTI Rotary Union, 2-Passage, 1/4"-18 NPT Connections, Carbon Steel (GP-220)
DSTI Store
$315.00
Killark Uny8 3" Steel Male Conduit Union
New Feedonomics Feed - ARC 8/12/2025
$315.00
Killark Uny8 3" Steel Male Conduit Union
New Feedonomics Feed - ARC 8/12/2025
$43.53
2" Stainless Steel 304 150 Threaded Union 2 Inch Class 150 Pipe Fitting FNPT
Amazon.com
11
$43.53
2" Stainless Steel 304 150 Threaded Union 2 Inch Class 150 Pipe Fitting FNPT
Amazon.com
11
$25.99
PVC Union Coupling Pipe Fitting, Slip Union Schedule 40, Adapter(Socket X Socket), Built-In EPDM O-Ring, White (1 Pack)
Amazon.com
215
$25.99
PVC Union Coupling Pipe Fitting, Slip Union Schedule 40, Adapter(Socket X Socket), Built-In EPDM O-Ring, White (1 Pack)
Amazon.com
215
$22.82
Union: Brass, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 6AYY5
Grainger
1
$22.82
Union: Brass, 1/2 in X 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 6AYY5
Grainger
1
$62.64
Union: 304 Stainless Steel, 1 1/2 in X 1 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 400U111N112
Grainger
$62.64
Union: 304 Stainless Steel, 1 1/2 in X 1 1/2 in Fitting Pipe Size, Female NPT X Female NPT Model: 400U111N112
Grainger
$4.95
3/8" Union Connector Polypropylene
Environmental Service Products
Free shipping
$4.95
3/8" Union Connector Polypropylene
Environmental Service Products
Free shipping
$17.99
TAISHER 2PCS 304 Stainless Steel Union3/4" NPT Female Cast Pipe Fitting
Amazon.com
18
$17.99
TAISHER 2PCS 304 Stainless Steel Union3/4" NPT Female Cast Pipe Fitting
Amazon.com
18
$75.95
Spears Schedule 40 PVC Pipe Fitting Union - Buna 3" Slip X Slip Case Of 2 457-030
Core & Main
42
$75.95
Spears Schedule 40 PVC Pipe Fitting Union - Buna 3" Slip X Slip Case Of 2 457-030
Core & Main
42
$66.73
Union: Malleable Iron, 2 1/2 in X 2 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 2WU83
Grainger
$66.73
Union: Malleable Iron, 2 1/2 in X 2 1/2 in Fitting Pipe Size, Female NPT X Female NPT, Class 150 Model: 2WU83
Grainger
$61.96
DEKS Underground Pipe Coupling 6 Inch To 4 Inch Clay To Cast Iron Or PVC/Plastic - Single Item
Home Improvement Supply
$61.96
DEKS Underground Pipe Coupling 6 Inch To 4 Inch Clay To Cast Iron Or PVC/Plastic - Single Item
Home Improvement Supply
$4.95
Fernco 2" Flexible PVC Pipe Coupling For Cast Iron Or Plastic 1056-22
Core & Main
11
$4.95
Fernco 2" Flexible PVC Pipe Coupling For Cast Iron Or Plastic 1056-22
Core & Main
11
$37.79
3/4 in. NPT Threaded Union (Brass Seat) - 300 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$37.79
3/4 in. NPT Threaded Union (Brass Seat) - 300 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$34.95
Fernco 4" Strong Back Pipe Coupling For Cast Iron Or Plastic 1056-44RC
Core & Main
12
$34.95
Fernco 4" Strong Back Pipe Coupling For Cast Iron Or Plastic 1056-44RC
Core & Main
12
$36.94
1/4 in. NPT Threaded - Union - DOMESTIC - 150 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$36.94
1/4 in. NPT Threaded - Union - DOMESTIC - 150 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$33.49
Lasco Union 1-1/2" FIPT 458-015
PoolZoom.com
$33.49
Lasco Union 1-1/2" FIPT 458-015
PoolZoom.com
$20.95
1/4" Swagelok Compatible Compression Union Stainless Steel
Environmental Service Products
Free shipping
$20.95
1/4" Swagelok Compatible Compression Union Stainless Steel
Environmental Service Products
Free shipping
$26.16
2 in. NPT Threaded Union (Brass Seat) - 150 Black Malleable Iron Pipe Fitting - UL/FM
BFO
$26.16
2 in. NPT Threaded Union (Brass Seat) - 150 Black Malleable Iron Pipe Fitting - UL/FM
BFO