Fill valve assembly for filler device

A fill valve assembly for use in association with a filler device, comprising:

• an outer housing;
• a product dispensing member associated with the outer housing;
• a displaceable piston positioned within at least a portion of the outer housing and the product dispensing member, the displaceable piston further comprises:
• a body having a first end, a second end, and a lip positioned therebetween;
• a sleeve having a first end and a second end, the sleeve extending over at least a portion of the body between the first end and the lip, wherein the second end of the sleeve is positioned proximate the lip of the body;
• and
• a spacer positioned proximate each of the first ends of the body and the sleeve, wherein the spacer is slidably positionable relative to the body and fixedly engageable with the first end of the sleeve, whereupon downward movement of the spacer moves the second end of the sleeve toward the lip of the body;
• and
• a seal member, the seal member fixedly associated with the displaceable piston at a list end thereof, and fixedly associated with at least one of the outer housing and the product dispensing member at a second end thereof, the seal member comprises a bellows having a plurality of flexing regions, wherein the first end of the seal member is fixedly engaged between the second end of the sleeve and the lip of the body.