Cherne Plumbing Test Ball® Plugs were first introduced in 1953 as a more versatile product than traditional mechanical plugs. Designed to test drain, vent and waste systems Cherne Test Ball® Plugs could be used in any type of pipe, could be inserted through a test tee, and sealed out of round pipe as well. Cherne introduced the multi-size yellow-top Test Ball® plugs in 2002. These test ball plugs have the same great features found in the original test ball plugs, but can be used in more than one pipe size.

Cherne® Test-Ball® Pneumatic Plumbing Plug, Multi-Size, 3 to 4 in Nominal Size, Natural Rubber, Domestic

• Cherne® multi-size plumbing Test-Ball® plugs have the same great features as our original test ball plugs, with the added benefit that one size fits multiple pipe diameters, doing the job of 2+ single-size plugs
• Use to block flow (water DWV test) or as a back plug for sewer air testing
• Seals both round and out-of-round pipe
• Zinc-plated steel chain and ring handle acts as an anchor to prevent plug from sliding down a line
• Natural rubber: Great sealing properties as well as excellent expansion and memory
• Schrader valve inflator includes cap with valve core tightener
• Ring and chain assembly: Prevents plug from dropping into DWV system during test
• Removable chain
• Molded in valve inflation thread
• 2.64 in Dia deflated
• 5.18 in L deflated
• 40 psi inflation pressure
• 17 psi maximum back pressure
• 2.8 to 4.25 in usage range
• 40 ft head

• Catalog https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/https://assets.unilogcorp.com/2/ITEM/DOC/Oatey_31318_Catalog.pdf