FatBoy Testers™

Blocking plug and air-testing plug all in one.

Plugs for air testing, vacuum testing, and blocking flow.

FatBoy Testers™ are one of our most versatile products. Constructed of cross woven, natural rubber fabrics along with an innovative manufacturing process ensures maximum strength and durability. FatBoy Testers™ can perform a variety of applications, from front and backside air testing and vacuum testing to blocking flow.  FatBoy Testers™ are available in diameters from 3.75 inches to 61.5 inches and lengths between 16 inches and 95 inches. Every 6″-10″ and larger FatBoy Tester™ comes standard with ¾-inch and ¼-inch bypasses so users can effortlessly switch between applications without renting or purchasing additional plugs.

Pictured: 225-1530MG

New Sizes

Pictured: 225-612

Picutred: 225-2460MG

New in 2021 are the usage ranges 6”-12” and 24”-60” which will allow our plugs to block, test and bypass in more pipe diameters.

Pictured: 225-1530MGMS

Optional Max-Guard™ and Max-Sleeve™

Max-Guard™ relief valves are standard on all FatBoy Tester™ plugs diameters15”-30” and larger and are optional on diameters of 12″-18″ and 12”-24”. Max-Guard™ relief valves protect the plugs from becoming overinflated due to malfunctioning gauges or user error.

Learn more about Max-Guard™

Max-Sleeve™ adds an extra layer of natural rubber to our FatBoy Testers™ to protect against debris, sharp objects, and degraded pipes. Max-Sleeves includes a 5/16-inch coated cable to secure the sleeve to the plug.

Learn more about Max-Sleeve™