Romac Industries, Inc. Alpha™ Wide Range Restraint Coupling is manufactured in the USA. The Alpha Coupling installs in about three minutes, and accommodates up to 8 degrees of deflection (4 degrees on each end). Use one piece, stab-fit installation, covers IPS PVC through DI pipe diameters without having to change components, sizes 4" - 16", compatible with ductile iron, cast iron (class A, B, C & D), PVC IPS size (Sch 40, Sch 80 and SDR 21), PVC C900 & C909 & HDPE (size 4" - 12"). Working Pressure up to 350 psi. To order, determine the O.D. of the pipes to be coupled, and select coupling size which covers the pipe diameters of both pipe ends. Materials: Castings - All cast components (end rings, center ring, and bolt guides) are ductile iron, meeting or exceeding the requirements of ASTM A 536, grade 65-45-12. Grippers - Ductile (nodular) iron, meeting or exceeding ASTM A 536, Grade 65-45-12. Machine sharpened and heat treated. Xylan 1424 coated for superior corrosion resistance. Gaskets SBR compounded for water and sewer service per ASTM D2000, classified by UL to meet NSF61 or NBR compounded for water and sewer service per ASTM D2000, NSF61 Certified. Other compounds available upon request. Draw Hooks - 304L stainless steel. Ramp Runners - Reinforced Nylon. Bolts and Nuts - 5/8-11 bolts with heavy hex nuts. E-coated nuts, 304 stainless steel. Fasteners provided with anti-galling protection. Coatings - Center ring is Romacoat fusion bonded epoxy, NSF 61 Certified. End rings are Romabond polyester.
