The Cherne 2-1/2" Single-Size Plumbing Test-Ball (part #270-108) is a pneumatic test plug for DWV testing on 2-1/2" pipe. Natural rubber inflates to seal pipes from 2.34" to 2.75" ID. Rated for 13 PSI / 30 ft. head pressure at 35 PSI inflation. Fills the 2-1/2" size gap between common 2" and 3" plugs. Schrader valve, ring and chain assembly.

Key Features

Pneumatic inflation — natural rubber expands to seal round and out-of-round pipes
13 PSI / 30 ft. head pressure — rated for DWV and plumbing code testing
Schrader valve (tire-type) — inflate with any standard air source, field-replaceable
Ring and chain assembly — prevents draw-in during inflation
Natural rubber construction — excellent expansion memory for reliable sealing

Technical Specifications

Cherne Part Number	270-108
Nominal Pipe Size	2-1/2"
Usage Range (Pipe ID)	2.34–2.75"
Max Back Pressure	13 PSI / 30 ft.
Inflation Pressure	35 PSI
Body Material	Natural rubber
Inflation Fitting	Schrader valve (tire-type, replaceable)
Safety	Ring and chain assembly (prevents draw-in)
Deflated Length	4.5"
Weight	~1 lb
Operating Temperature	0°F to 125°F

Applications

DWV pressure testing for code compliance, residential and commercial plumbing inspections, stack testing, and sewer air tests. The pneumatic design seals quickly and conforms to out-of-round pipe — faster than mechanical plugs for multi-plug test setups. Always follow Cherne inflation guidelines and never exceed rated inflation pressure.

Questions on sizing or bulk pricing? Call (866) 514-3684 or email us — same-day shipping on in-stock items, tax-exempt purchasing for qualified accounts.

Tapón Cherne® de 2-1/2" de tamaño único para pruebas de fontanería