Kirk Supply - Wholesale Distributor of Plumbing and Mechanical Supplies in Delaware Since 1950! Fittings - Copper, Plastic, Steel, NVent Permalynx push-to-connect fitting & valves, Pipe, Valves, Fixtures - Toto, American Standard, Aker, Maax! Faucets - Moen, Showhouse, Delta, Hansgrohe, Cifial!