Anvil 1 In. Ground Joint Malleable Black Iron Union HandyMark Chlorine and hard water resistant

Chlorine and hard water resistant flapper for a long lifespan

O-ring and bushing

Front fixed exhaust

Ideal for installing wiring for telephones

Anvil 1 In. Ground Joint Malleable Black Iron Union HandyMark Chlorine and hard water resistantMalleable black iron pipe fittings. Black finish resists rust. National Pipe Threads for creating tighter seals than straight threads. Fed. Spec. WW P 471 B, ANSI B 16. 14 (Dimensions), ANSI B 2. 1 (Pipe Threads), Ferrous Plugs, Bushings, and Locknuts, Fed. Spec. WW P 471 B, ANSI B 16. 14 (Dimensions), ANSI B 2. 1 (Pipe Threads), Malleable Iron Unions (Class 150), Fed. Spec. WW U 531C, ANSI B 16. 39.