4 Each Hymax 24” HYMAX Four (4) Bolt Wide (Extended) Range Coupling, Part #860-56-0624-16P, O.D. Range:± 24.60” – 26.70 $. All bolted sleeve-type couplings, reducing couplings, transition couplings, and flanged coupling adapters used to join plain-end steel, cast iron and ductile iron pipe shall conform to the latest revision of ANSI / AWWA C219, NSF 61 and NSF 372 as latest revised and shall in addition meet the specific requirements and exceptions which follow: 1. The design of bolted couplings shall be based on a rated working pressure of 200 psi, a transient or surge pressure allowance of 100 psi and a hydrostatic test pressure of 300 psi. 2. Couplings shall be manufactured from carbon steel, stainless steel, ductile iron or malleable iron. All materials used shall conform to ANSI / AWWA C219, section 4.2. 3. Bolts for all bolted, sleeve-type couplings shall be high strength, low alloy steel bolts only, conforming to ANSI / AWWA C111 / A21.11 as latest revised. Bolt manufacturers certification shall accompany each shipment.
