The Cherne 3" Econ-O-Grip plug (part #271-535) is a low-cost mechanical blocking plug for 3" pipe — rated for 2 PSI maximum. Natural rubber O-ring with galvanized metal plates and bolt. Not rated for pressure testing — for blocking and dust cover use only. Wing nut expansion for tool-free installation. The budget-friendly choice for temporary pipe blocking on construction sites.

Key Features

2 PSI maximum — low-pressure blocking only
Not for pressure testing — for blocking and dust covers only
Natural rubber O-ring — seals round and out-of-round pipes
Galvanized hardware — metal plates and bolt resist corrosion
Wing nut expansion — no tools required

Technical Specifications

Cherne Part Number	271-535
Nominal Pipe Size	3"
Max Back Pressure	2 PSI (low-pressure blocking only)
Seal	Natural rubber O-ring
Hardware	Galvanized metal plates and bolt
Operating Temperature	0°F to 125°F
Pressure Testing	NOT RECOMMENDED — use Sure-Grip or Gripper for testing

Applications

Temporary pipe blocking during construction, dust covers on open pipe ends, low-pressure flow blocking, and any application where full pressure testing is not required. For DWV pressure testing, use the Cherne Sure-Grip (up to 22 PSI) or Gripper plugs (up to 17 PSI) instead.

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 de bloqueo de baja presión Cherne 3" Econ-O-Grip