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3/8" BSP Male to Male Snap Connector. Typically used to turn CK torch fittings into nipples for snap connection.
Straight answers to the questions people ask most when choosing and using accessories for TIG welding.
Beyond the machine, torch and consumables, a range of extras can make TIG welding easier or give better results. Common ones include water coolers for water-cooled torches, trailing shields and purge chambers for better gas protection, purging aids such as flux and tape for stainless steel, gauges for setting tungsten stick-out and checking gas flow, adaptors and quick connectors for gas and water, arc starters that add features to simple machines, and trolleys to carry the equipment.What you need depends on your machine, your torch and the metals you weld.
Use the coolant recommended by the cooler's maker. Plain tap water can cause scale, algae and corrosion, and in cold weather can freeze and damage the pump and hoses. A proper coolant mixture protects against these problems.Check the level before you weld, top up with the correct fluid, and never run the torch without coolant flowing. Change the coolant at the intervals the maker gives, and follow the maker's instructions on disposal.
A trailing shield is an attachment that fits behind the torch cup and sends a stream of shielding gas over the weld after the torch has passed. Some metals, such as titanium and stainless steel, stay hot enough to oxidise as they cool, so the extra gas protects them while they cool down.It is most useful for reactive metals and for welds where discolouration is not acceptable. It must match your torch and be fitted so that it follows the weld evenly.
It is a flexible enclosure that you fill with argon and weld inside, so the whole joint and the area round it sit in an inert atmosphere. It is used mainly for reactive metals like titanium, and for jobs where normal gas coverage cannot keep the hot metal clean as it cools.You place the work in the chamber, purge it until the oxygen level is low enough, and then weld through the sleeves or openings. Follow the maker's instructions, and make sure that any enclosed space is properly ventilated, since argon displaces air.