The Dresser Style 40 Long Body Coupling is an engineered mechanical sleeve coupling designed for plain-end cast iron (CIP) and ductile iron pipe (DIP) where pipe ends are widely separated — a common field condition during repairs, replacements, and installations where a standard-body coupling cannot span the gap. Structurally similar to the Style 38, the Style 40 uses a longer middle ring with a larger belly diameter to bridge gaps that would otherwise require a spool piece, additional fittings, or pipe cutting on both sides of the joint.

Despite the added length, the Style 40 delivers the same joint performance as the Style 38 — absorbing up to 3/8 in of expansion and contraction per joint — making it suitable for service subject to thermal cycling, ground settlement, or vibration. Installation requires only a wrench. No threading, beveling, or precise pipe alignment is needed.