The Cherne 3" Single-Size Plumbing Test-Ball (part #270-032) is a pneumatic test plug for DWV testing on 3" drain and vent pipe. Natural rubber inflates to seal pipes from 2.77" to 3.25" ID. Rated for 13 PSI / 30 ft. head pressure at 35 PSI inflation. The 5.25" long, 6.5 oz plug is a standard tool for residential and light commercial plumbing inspections. Replaceable 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	270-032
Nominal Pipe Size	3"
Usage Range (Pipe ID)	2.77–3.25"
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	5.25"
Deflated Diameter	2.64"
Weight	6.5 oz
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.

Enchufe Cherne® de 3" de tamaño único para pruebas de fontanería