Dresser Style 440 Joint Harnesses are steel tie-bolts, diametrically opposite, which extend across a coupled joint from lugs welded to the pipe on either side of the joint. Joint harnesses are particularly effective on unanchored bends subject to pulsating pressures of sharp intensity.

Available as conductive or insulating, Dresser Joint Harnesses have been designed to meet D.O.T. Regulation Part II, Section 192.273 and meet all safety requirements of modern gas distribution system practices. Lugs are made of rugged construction for optimum strength. Insulators are of high-quality thermoplastic resin compound providing minimum insulating rating of 5 megohms at 100V, and will not short out.