Grooved couplings are mechanical pipe connectors comprising a ductile iron housing, a rubber sealing gasket, and high-strength steel track bolts/nuts. They operate under standards like ANSI/AWWA C606 for sizing and pressure ratings up to 1, 000 psi (69 bar), depending on the application. Material Specifications • Housing: Ductile iron conforming to ASTM A536, Grade 65-45-12. • Coating: Orange non-lead shop paint, red enamel, or hot-dipped galvanized conforming to ASTM A153. • Bolts & Nuts: Heat-treated carbon steel track bolts conforming to ASTM A183 with a minimum tensile strength of 110, 000 psi. Gasket Specifications & Temperature Ranges • Grade E EPDM (Green Stripe): -30°F to +230°F (-34°C to +110°C) for water, dilute acids, and oil-free air. • Grade T Nitrile (Orange Stripe): -20°F to +180°F (-29°C to +82°C) for petroleum products, air with oil vapors, and vegetable oils. Rigid vs. Flexible Types • Rigid Couplings: Designed to lock pipes firmly in place, preventing axial or angular movement to mimic a welded joint. • Flexible Couplings: Permit controlled linear and angular movement to accommodate thermal expansion, contraction, and vibration isolation. If you have a specific application in mind, please share:The pipe size and schedule (e.g., Schedule 40 steel)The fluid or media being transportedWhether you need a rigid or flexible jointI can provide the exact pressure ratings and model recommendations for your setup. AI responses may include mistakes.