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What is a union nut?

A union nut is a type of fastener used to connect two pipes or tubes together. It is commonly used in plumbing and hydraulic systems to create a secure and leak-proof connection. The union nut consists of two parts: a nut and a threaded sleeve. The nut is typically hexagonal in shape and is used to tighten the sleeve onto the pipes, creating a tight seal.

The primary function of a union nut is to allow for easy disassembly and reassembly of the connected pipes or tubes. This is particularly useful in situations where regular maintenance or repairs are required. By simply loosening the nut, the pipes can be separated without the need for cutting or welding, making the process much more efficient and cost-effective.

Union nuts are available in various materials, including brass, stainless steel, and plastic, to suit different applications and environments. They are also designed to accommodate different pipe sizes and thread types, ensuring compatibility with a wide range of systems.

When installing a union nut, it is important to ensure that the pipes are clean and free from any debris that could compromise the seal. Proper tightening of the nut is also crucial to prevent leaks and ensure a secure connection. Over-tightening can lead to damage, while under-tightening can result in leaks, so it is essential to follow the manufacturer's recommendations for the specific union nut being used.

In summary, a union nut is a versatile and essential component in plumbing and hydraulic systems, providing a reliable and convenient way to connect and disconnect pipes or tubes. Its ability to facilitate easy maintenance and repairs makes it a valuable asset in various industrial and residential applications. Whether it's for a simple household plumbing repair or a complex hydraulic system, the union nut plays a crucial role in ensuring the integrity and functionality of the connected pipes.

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Galvanized Grooved Pipe Fittings

Galvanized Grooved Pipe Fittings

Black Iron Pipe Fittings

Black Iron Pipe Fittings

Male and Female Threaded Long Radius Elbow Bend 90 Degree Fig.1

Male and Female Threaded Long Radius Elbow Bend 90 Degree Fig.1

Female Bend 90 Degree Fig.2

Female Bend 90 Degree Fig.2

Elbow Pipe Bend 45 Degree Male and Female Fig.40

Elbow Pipe Bend 45 Degree Male and Female Fig.40

Female GI Pipe Fittings 45 Degree Fig. 41

Female GI Pipe Fittings 45 Degree Fig. 41

OEM Malleable Iron Plumbing Fittings Fig. 85

OEM Malleable Iron Plumbing Fittings Fig. 85

FIG.90 Elbow 90°, Equal

FIG.90 Elbow 90°, Equal

Pipe Joints 90 Degree Elbow Reducing Fig.90R

Pipe Joints 90 Degree Elbow Reducing Fig.90R

180 Degree Return Bend Fig.90U

180 Degree Return Bend Fig.90U

Cast Iron Fittings 90 Degree Elbow Fig.92

Cast Iron Fittings 90 Degree Elbow Fig.92

Galvanised Threaded Pipe Fittings Reducer Elbow Fig. 92R

Galvanised Threaded Pipe Fittings Reducer Elbow Fig. 92R

BSP Union Elbows Flat Seat Fig.95

BSP Union Elbows Flat Seat Fig.95

GI Pipe Union Elbows Conical Seat Fig.96

GI Pipe Union Elbows Conical Seat Fig.96

NPT Female Union Elbows Flat Seat Fig.97

NPT Female Union Elbows Flat Seat Fig.97

Galvanized Union Elbows Conical Seat Male and Female Fig.98

Galvanized Union Elbows Conical Seat Male and Female Fig.98

Iron Pipe Fittings 45 Degree Elbow Fig.120

Iron Pipe Fittings 45 Degree Elbow Fig.120

FIG.130 Tee Equal

FIG.130 Tee Equal

Pipe Fittings Tee Reducer Fig.130R

Pipe Fittings Tee Reducer Fig.130R

Plumbing Fittings Tee Reducing Fig.131R

Plumbing Fittings Tee Reducing Fig.131R

Pipe Connector Lateral Y Branch Tee 45 Degree Fig.165

Pipe Connector Lateral Y Branch Tee 45 Degree Fig.165

4 Way Pipe Fitting Equal Cross Fig.180

4 Way Pipe Fitting Equal Cross Fig.180

Galvanized Cross Reducer Fig.180R

Galvanized Cross Reducer Fig.180R

FIG.220 Socket, Part Threaded

FIG.220 Socket, Part Threaded

Gas Pipe Fittings Socket Reducing Fig.240

Gas Pipe Fittings Socket Reducing Fig.240

Galvanized Pipe Bushing Fig.241

Galvanized Pipe Bushing Fig.241

Threaded Nipple Reducer Fig.245

Threaded Nipple Reducer Fig.245

Pipe Reducer Socket Male and Female Fig.246

Pipe Reducer Socket Male and Female Fig.246

NPT Fitting Socket Entire Threaded Fig.270

NPT Fitting Socket Entire Threaded Fig.270

Galvanized Nipple Equal Fig.280

Galvanized Nipple Equal Fig.280

Cast Iron Pipe Fittings Galvanized Plug Beaded Fig.290

Cast Iron Pipe Fittings Galvanized Plug Beaded Fig.290

Galvanized Plug Plain Fig.291

Galvanized Plug Plain Fig.291

Galvanized Pipe Fittings Hexagon Cap Fig.300

Galvanized Pipe Fittings Hexagon Cap Fig.300

Pipe End Caps Round Fig.301

Pipe End Caps Round Fig.301

GI Fittings Pipe Back Nut Fig.310

GI Fittings Pipe Back Nut Fig.310

Galvanized Pipe Flange Blind Flange Fig.321

Galvanized Pipe Flange Blind Flange Fig.321

Stub End Flange With Bolt Hole Fig.329

Stub End Flange With Bolt Hole Fig.329

Plumbing Pipe Fittings Flat Seat Union Fig.330

Plumbing Pipe Fittings Flat Seat Union Fig.330

Galvanized Extension Piece Union Fig.331

Galvanized Extension Piece Union Fig.331

BSP Pipe Fittings Union Taper Seat Fig.340

BSP Pipe Fittings Union Taper Seat Fig.340

Galvanized Fittings Union Taper Seat Fig. 341

Galvanized Fittings Union Taper Seat Fig. 341

Threaded Malleable Fittings Union Brass Taper Seat Fig. 342

Threaded Malleable Fittings Union Brass Taper Seat Fig. 342

Plumbing Union Fitting Male and Female Brass Taper Seat Fig. 343

Plumbing Union Fitting Male and Female Brass Taper Seat Fig. 343

Malleable Iron Pipe Fittings Fig. 372

Malleable Iron Pipe Fittings Fig. 372

Galvanised Pipe and Fittings Union Nut Fig. 374

Galvanised Pipe and Fittings Union Nut Fig. 374

GI Fittings Bracket Elbow Fig. 471

GI Fittings Bracket Elbow Fig. 471

GI Reducer Pipe Fitting Socket Fig. 529A

GI Reducer Pipe Fitting Socket Fig. 529A

Threaded Pipe Fittings Side Outlet Elbow Fig.1221

Threaded Pipe Fittings Side Outlet Elbow Fig.1221

Long Compression Coupling

Long Compression Coupling

Short Compression Coupling

Short Compression Coupling

BSP Black Malleable Iron 90 Degree Bend Fig. 2

BSP Black Malleable Iron 90 Degree Bend Fig. 2

Black Pipe Fittings Elbow Fig.90

Black Pipe Fittings Elbow Fig.90

45 Degree Black Iron Elbow Fitting Fig. 120

45 Degree Black Iron Elbow Fitting Fig. 120

Black Equal Tee Pipe Fittings Fig.130

Black Equal Tee Pipe Fittings Fig.130

Black Iron Pipe Fittings Equal Cross Fig.180

Black Iron Pipe Fittings Equal Cross Fig.180

Black Cross Reducer Fig.180R

Black Cross Reducer Fig.180R

Black Malleable Female Socket Fig.220

Black Malleable Female Socket Fig.220

Black Malleable Iron Threaded Fittings Hex Bushing Fig. 241

Black Malleable Iron Threaded Fittings Hex Bushing Fig. 241

NPT Threaded Nipple Reducer Fig.245

NPT Threaded Nipple Reducer Fig.245

BSP Black Hex Nipple Equal Fig.280

BSP Black Hex Nipple Equal Fig.280

Malleable Iron Plug Fig.290

Malleable Iron Plug Fig.290

Square Head Plug Plain Fig.291

Square Head Plug Plain Fig.291

Black Malleable Iron Hexagon Cap Fig.300

Black Malleable Iron Hexagon Cap Fig.300

Black Iron Cap Fittings Round Fig.301

Black Iron Cap Fittings Round Fig.301

Black Iron Fittings Flat Seat Union Fig.330

Black Iron Fittings Flat Seat Union Fig.330

Male Female Pipe Union Fitting Fig.331

Male Female Pipe Union Fitting Fig.331

Black Pipe Fittings Union Taper Seat Fig.340

Black Pipe Fittings Union Taper Seat Fig.340

Industrial Pipe Fittings Union Taper Seat Fig. 341

Industrial Pipe Fittings Union Taper Seat Fig. 341

Malleable Iron Fittings Black Union Brass Taper Seat Fig. 342

Malleable Iron Fittings Black Union Brass Taper Seat Fig. 342

Union Pipe Fitting Male and Female Brass Taper Seat Fig. 343

Union Pipe Fitting Male and Female Brass Taper Seat Fig. 343

Black Iron Pipe Fittings Wholesale Fig. 372

Black Iron Pipe Fittings Wholesale Fig. 372

Plumbing Joints Union Nut Fig. 374

Plumbing Joints Union Nut Fig. 374

Black Bracket Elbow Fig.471

Black Bracket Elbow Fig.471

Grooved Coupling Rigid Coupling XGQT01

Grooved Coupling Rigid Coupling XGQT01

Flexible Coupling XGQT02

Flexible Coupling XGQT02

Elbow XGQT03

45° Elbow XGQT04

45° Elbow XGQT04

22.5° Elbow XGQT05

22.5° Elbow XGQT05

11.25° Elbow XGQT06

11.25° Elbow XGQT06

Grooved Equal Tee XGQT07

Grooved Equal Tee XGQT07

Grooved Tee Reducing XGQT08

Grooved Tee Reducing XGQT08

Threaded Reducing Tee XGQT08S

Threaded Reducing Tee XGQT08S

Threaded Reducing Cross XGQT10S

Threaded Reducing Cross XGQT10S

Equal Grooved Cross XGQT09

Equal Grooved Cross XGQT09

Reducer Concentric XGQT11

Reducer Concentric XGQT11

Threaded Reducer Concentric XGQT11S

Threaded Reducer Concentric XGQT11S

Grooved Eccentric Reducer XGQT12

Grooved Eccentric Reducer XGQT12

Adaptor Flange XGQT13

Adaptor Flange XGQT13

Split Flange XGQT14

Split Flange XGQT14

Threaded Mechanical Cross XGQT15S

Threaded Mechanical Cross XGQT15S

Mechanical Cross XGQT15

Mechanical Cross XGQT15

Blind Cap XGQT16

Blind Cap XGQT16

Mechanical Tee XGQT17

Mechanical Tee XGQT17

Threaded Mechanical Tee XGQT17S

Threaded Mechanical Tee XGQT17S

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Keywords: Galvanized Pipe Fittings, Black Iron Pipe Fittings, Grooved Pipe Fittings, Pipe Fittings, Pipe Elbow, Pipe Union, Pipe Tee

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