Cherne® 44" Plate-Style Air-Loc® Head Assembly, 18" - 42"

The Cherne® 44 in. Plate-Style Air-Loc® Head Assembly, 18 in. – 42 in. (part #220448) is the largest-plate sealing head in Cherne's plate-style manhole vacuum testing line. Its gasketed 44 in. plate seals manhole openings from 18 in. up to 42 in., allowing the structure to be vacuum tested and monitored for vacuum loss.

Key Features

• Wide 18 in. – 42 in. capacity — covers standard openings through large-diameter access points with one head.
• ASTM C1244 test method — proven vacuum-test approach for new, existing, and rehabilitated manholes.
• Gasketed plate seal — seats on the cone or rim surface for a leak-free test seal.
• Lightweight aluminum construction — sized big but built to stay manageable in the field.
• Remote monitoring — gauge-and-hose setup lets the operator run the test from a safe position.

Applications

Municipal utilities and contractors choose the 44 in. head when their system includes larger manhole openings — one assembly handles acceptance testing and rehab verification across nearly the full range of structures on a collection system.

Questions on sizing or bulk pricing? Call (866) 514-3684 or email us — we ship within the USA and welcome tax-exempt purchasing for qualified accounts.