0 items in your basket
Total £ 0.00 EX VAT
MIG Gloves
TIG Gloves
Baseball Caps
Armguards
TIG Heat Blockers
Shop 55,000 Products
SERVICEDEPT.
RAPID BLOG
FEEDBACK
HIRE
Includes one stubby gas lens, built for TIG torches sizes of 17, 18 and 26, and an O-ring.
These gas lenses are constructed with the very best quality with stringent QC guidelines.
Questions about adaptor kits and conversion parts that let an air-cooled TIG torch take a gas lens body, larger cups and clear cups.
An adaptor kit swaps the parts at the front of the torch head so the torch can run a different style of cup, usually a larger or clearer one and often with a gas lens in place of a standard collet body. Typical contents are a collet body or gas lens body, a collet, a heat shield or insulator, O-rings and sometimes a cup.The torch handle, cables and back cap stay the same. Check the kit contents against the torch you own and the electrode diameter you weld with, because the parts only work together as a matched set.
Both parts are made for one electrode diameter. The collet grips the tungsten and the body supports it and carries the gas, so a 2.4 mm electrode needs a 2.4 mm collet and a 2.4 mm collet body or gas lens.A mismatch usually shows up as an electrode that slips, sits off-centre or arcs poorly inside the torch. When you change electrode size, change the collet and the body or lens together rather than trying to make the old ones grip.
A standard collet body releases the gas through a ring of small holes, so the flow can swirl as it leaves. A gas lens passes the gas through fine screens first, which gives a smoother, less turbulent stream and generally better shielding coverage.The practical gains are that the electrode can usually be extended further from the cup, which helps in tight joints, and that coverage is more consistent on work where discolouration matters, such as stainless steel. A gas lens also needs cups made for its thread, not the cups from a standard collet body.
It sits behind the cup, between the cup and the torch head, and is generally there to protect the head from heat and to help hold the cup and seal the gas path when a wider gas lens cup is fitted. It is a wearing part.Replace it if it is cracked, distorted or scorched, and always use the one made for your torch type and body style. Leaving it out, or using the wrong one, can leave a gap where gas escapes and the head is exposed to more heat than it was designed for.