Steel joint harnesses with lugs.
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 megaohms at 100V, and will not short out. A deflection ring placed behind one lug deflects to absorb contraction in connected pipes occurring after installation eliminating harmful stresses. Individual harnesses may be installed in the field as either insulated or conductive by simply interchanging parts.
Each Dresser Style 440 Joint Harness consists of two lugs, one deflection ring, one stud bolt and two nuts. Harnesses are furnished with either 5/8in or 3/4in stud bolts in lengths of 26in for 5in middle rings, 32in for 7in middle rings and 44in for 12in and 16in middle rings.