new to this brass black product but just tried it and it is very good and works instantly. Not cheap (£14) but worth it in the long run
Holding small parts for soldering - Metal Work, Soldering and
Union for connecting and disconnecting two pipes more easily than couplings Fitting connects to tubing on both ends Type 304 stainless steel for
Metalwork 304 Stainless Steel Compression Tube Fitting, Union, 3/8 OD x 3/8 OD (2 Pcs)
An environmentally safe method for soldering pipes up to 2 inches (580 mm). Apply a thin solid line for best results. Do not over apply! A permanent
ComStar Copper Lock, No Heat Solder for Copper & Brass Pipes
Harris Safety-Silv 45 Brazing Kit 45KPOP
RELIABILT 2-in Black Union in the Black Pipe & Fittings department at
Brazing Copper to Brass with Sil-Fos®
G1/4'' Stainless Steel 1.4404 Banjo Fitting with Male and Female
i5.walmartimages.com/seo/EverStart-0-28oz-Solder-M
Metal Fabrication Mastery: Welding, Soldering, and More
RELIABILT 1-1/4-in x 3/4-in Galvanized Reducing Coupling in the Galvanized Pipe & Fittings department at
3,800+ Brass Fittings Stock Photos, Pictures & Royalty-Free Images
Apollo 1/2 in. Brass PEX-B x Female Solder 90-Degree Elbow
Union Brass Fittings at