The welding back caps and the valve stems is also the important parts in the tig welding torches .They are all used in the torch bodies .The back caps have two :the Long Back Cap and the short cap .The valve is used in the valve torch body .It also have a protection .The back caps have several series :the 41V,the 57Y ,the 56Y .The valve stem just have two ,the VS-1,VS-2 .The customer can choice based on their need .
Tig Back Cap, Short Back Cap, Long Back Cap
EDAWELD COMPANY LIMITED , https://www.jsedaweld.com