Lincoln Service Parts 2 › Lincoln Electric 9SS23791 FLOW SWITCH S23791 Lincoln Electric 9SS23791 FLOW SWITCH S23791 Sale Price: $1,421.23 Original Price: $1,634.41 FLOW SWITCH PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! FLOW SWITCH PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1