
Brass Compression Straight Coupling
A professional-grade plumbing fitting designed to provide a secure and reliable connection between copper pipes in domestic and commercial water systems. Manufactured from high-quality brass and supplied with a pre-loaded olive in the compression nut, this compression fitting ensures quick installation without the need for soldering.

Brass Compression Straight Coupling
A professional-grade plumbing fitting designed to provide a secure and reliable connection between copper pipes in domestic and commercial water systems. Manufactured from high-quality brass and supplied with a pre-loaded olive in the compression nut, this compression fitting ensures quick installation without the need for soldering.
Quick Trade Summary: Brass Compression Straight Coupling
MEP Stock supplies heavy-duty brass compression straight couplings for joining two lengths of BS EN 1057 copper pipe without blowtorches or soldering. Conforming to BS EN 1254-2, each fitting features a forged DZR brass body, twin compression nuts, and precision olives for reliable, demountable, 16-bar mechanical jointing.
Flame-Free In-Line Copper Pipe Jointing & Repair
Joining straight copper pipework in domestic and light commercial environments is simple, clean, and reliable with our brass compression couplings. Featuring an internal pipe stop and precision-machined brass threads, they provide a metal-to-metal seal ideal for retrofits and emergency plumbing repairs.
Engineering Specifications & Material Standards
| Parameter | Specification Standard |
|---|---|
| Body Material | Dezincification Resistant (DZR) Brass CW617N (BS EN 1254-2) |
| Pipe Compatibility | BS EN 1057 (R250 Half-Hard / R290 Hard Table X) |
| Joint Type | Dual Compression Mechanical Joint (Metal-to-Metal Seal) |
| Operating Pressure | Max 16 bar (PN16) |
| Operating Temperature | -20°C to +110°C (-4°F to 230°F) |
| Included Hardware | Brass Body, Two Compression Nuts, and Two Copper/Brass Olives |
Step-by-Step Installation Protocol
- Square Cut: Cut both copper pipe ends cleanly at 90° with a pipe cutter.
- Deburr Thoroughly: Deburr inner and outer edges on both pipes.
- Mount Nuts & Olives: Slide one compression nut and olive onto each pipe end.
- Bottom Out in Socket: Push pipe ends into the coupling body until seated against the central stop.
- Tighten with Spanners: Hold coupling center flats with grips and tighten each nut 3/4 to 1 full turn with an adjustable spanner.
Frequently Asked Questions: Brass Compression Straight Coupling
Can I use this compression coupler on wet pipes?
Yes, compression fittings can be assembled and tightened on wet or dripping pipes. making them ideal for emergency repairs where water valves cannot be completely isolated.
Is this coupling WRAS approved for drinking water?
Yes, manufactured from WRAS-approved brass suitable for domestic wholesome water. ng water and central heating systems.
What is the pressure rating of this coupling?
Rated for operating pressures up to 16 bar (PN16). at ambient water temperatures.
Can this coupling be used on plastic pipe?
Yes, when used with the appropriate manufacturer pipe stiffeners. inserted into each plastic pipe end.
Are the olives and nuts included with the fitting?
Yes, supplied complete with body, two compression nuts, and two olives.
How many turns should I tighten the nuts?
Hand-tight, then 3/4 to 1 full turn with an adjustable spanner. to crush the olive evenly into the copper pipe.
Order Brass Compression Straight Couplings Online
Available from 15mm to 54mm in stock for immediate UK dispatch at MEP Stock.
Quick Trade Summary: Brass Compression Straight Coupling
MEP Stock supplies heavy-duty brass compression straight couplings for joining two lengths of BS EN 1057 copper pipe without blowtorches or soldering. Conforming to BS EN 1254-2, each fitting features a forged DZR brass body, twin compression nuts, and precision olives for reliable, demountable, 16-bar mechanical jointing.
Flame-Free In-Line Copper Pipe Jointing & Repair
Joining straight copper pipework in domestic and light commercial environments is simple, clean, and reliable with our brass compression couplings. Featuring an internal pipe stop and precision-machined brass threads, they provide a metal-to-metal seal ideal for retrofits and emergency plumbing repairs.
Engineering Specifications & Material Standards
| Parameter | Specification Standard |
|---|---|
| Body Material | Dezincification Resistant (DZR) Brass CW617N (BS EN 1254-2) |
| Pipe Compatibility | BS EN 1057 (R250 Half-Hard / R290 Hard Table X) |
| Joint Type | Dual Compression Mechanical Joint (Metal-to-Metal Seal) |
| Operating Pressure | Max 16 bar (PN16) |
| Operating Temperature | -20°C to +110°C (-4°F to 230°F) |
| Included Hardware | Brass Body, Two Compression Nuts, and Two Copper/Brass Olives |
Step-by-Step Installation Protocol
- Square Cut: Cut both copper pipe ends cleanly at 90° with a pipe cutter.
- Deburr Thoroughly: Deburr inner and outer edges on both pipes.
- Mount Nuts & Olives: Slide one compression nut and olive onto each pipe end.
- Bottom Out in Socket: Push pipe ends into the coupling body until seated against the central stop.
- Tighten with Spanners: Hold coupling center flats with grips and tighten each nut 3/4 to 1 full turn with an adjustable spanner.
Frequently Asked Questions: Brass Compression Straight Coupling
Can I use this compression coupler on wet pipes?
Yes, compression fittings can be assembled and tightened on wet or dripping pipes. making them ideal for emergency repairs where water valves cannot be completely isolated.
Is this coupling WRAS approved for drinking water?
Yes, manufactured from WRAS-approved brass suitable for domestic wholesome water. ng water and central heating systems.
What is the pressure rating of this coupling?
Rated for operating pressures up to 16 bar (PN16). at ambient water temperatures.
Can this coupling be used on plastic pipe?
Yes, when used with the appropriate manufacturer pipe stiffeners. inserted into each plastic pipe end.
Are the olives and nuts included with the fitting?
Yes, supplied complete with body, two compression nuts, and two olives.
How many turns should I tighten the nuts?
Hand-tight, then 3/4 to 1 full turn with an adjustable spanner. to crush the olive evenly into the copper pipe.
Order Brass Compression Straight Couplings Online
Available from 15mm to 54mm in stock for immediate UK dispatch at MEP Stock.









