Mathey Dearman Double Seal Purge System 64 72mm DS64 72 Mobile Extraction Units The only difference is diameter KH840XL The only difference is diameter (1 8 in) and package format (50 lb easy open can) Parameter Value Model SKU STT 10 Bench Model K1560 2 Configuration Bench model — permanent installation Process Control STT II — microprocessor based background and peak current control Peak Current Control Presettable — optimizes starting performance Background Current Control Presettable — controls heat input during sustaining arc phase Drive Rolls Split wire guide + 4 roll drive for positive feeding Trigger Operation 4 step trigger — cruise control for long welds and hard automation Range Control Yes — keeps procedures in the "sweet spot" for STT arc stability Dual Procedure Control Yes — increase or decrease arc energy without changing wire feed speed Mounting Options Modular design for multiple mounting configurations Compatible Power Sources Lincoln STT II power source The Double Seal Purge System is no exception Mathey Dearman Double Seal Purge System 64 72mm DS64 72