This plastic feed tube or stand pipe is commonly used in a long list of Taylor soft serve machines. This part in conjuction with the air orifice regulate the air product ratio.
Fits Taylor Models
338, 339, 750, 751, 754, 774, 791, 794, 8751, 8754, C706, C707, C709, C713 and C717.
Commonly replaced because its broken or missing. You can operate without a feed tube, but your product quality will be GREATLY diminished.