X Models - Yellow Nylon Head Rebuild Kits Part Number Description Part Numbers PUM 28-X 28 mm 2802 PUM 32-X 32 mm 3202 PUM 38-X 38 mm (most commonly used) 3802 ** Available through special order: 21 mm, 38 mm with blank name plate, 43 mm XV Models - Yellow Nylon Head, Vacuum Release Valve Part Number Description PUM 21-XV 21 mm 2102 PUM 28-XV 28 mm 2802 PUM 38-XV 38 mm 3802 PUM 43-XV 43 mm 4302 ** Available through special order: 32 mm, 38 mm with blank name plate U Models - Clear Acrylic Head Part Number Description PUM 17-U 17 mm 1702 PUM 20-UV 20 mm with vacuum release valve 2002 PUM 32-U 32 mm 3202 PUM 38-U 38 mm 3802 PUM 38-U 1/2 38 mm, accomodates 1/2" tube 3802 1/2 PUM 45-U 45 mm 4502 PUM 48-U 48 mm 4802 PUM 53-U 53 mm 5302 PUM 58-U 58 mm 5802 ** Any model can be modified with or without a vacuum release valve through special order M and FM Models - Acrylic Head, Stands, Vacuum Release Valves Part Number Description PUM 38-97M 38 mm, Rigid Stand 3801 PUM 38-97FM 38 mm, Folding Stand 3801 PUM 38-97FMG
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