Designed, Engineered & Manufactured in the U.S.A.

Heater Union Components

1 1/2" Heater Union Nuts

Part No.DescriptionCase Quantity
400-54611 1⁄2" Heater Split Nut - Long Assembly - with Screws50
400-54911 1⁄2" Heater Split Nut - with Screws100
415-40211 1⁄2" Heater Split Nut - without Screws100

1 1/2" Heater Union Tailpieces

Part No.DescriptionCase Quantity
417-40901 1⁄2" Buttress Thread x 1 1⁄2" S Tailpiece100
417-40501 1⁄2" Buttress Thread x 1 1⁄2" Spigot Tailpiece75

1 1/2" Heater Union O-Ring Gaskets

Part No.DescriptionCase Quantity
805-0224O-Ring - 1 1⁄2" Heater Tailpiece100
711-4000Gasket - 1 1⁄2" Heater Tailpiece500
711-4050O-Ring Gasket - 1 1⁄2" Heater Tailpiece500

2" Heater Union Nuts

Part No.DescriptionCase Quantity
400-51612" Heater Split Nut - with Screws150
415-51612" Heater Split Nut - without Screws150

2" and 2 1/2" Heater Union Tailpieces

Part No.DescriptionCase Quantity
417-20902" Buttress Thread x 1 1⁄2" S Tailpiece50
417-50502" Buttress Thread x 2" S Tailpiece150
417-50602" Buttress Thread x 2" Spigot Tailpiece45
417-51602" Buttress Thread x 2" Spigot / 1 1⁄2" S Tailpiece160
417-51402" Buttress Thread x 2" MPT Tailpiece45
413-2160Heater Flow Switch Tee - 2" Buttress Thread x 2" Spigot x 1⁄2" FPT25
417-51802" Buttress Thread x 3⁄4" S / 1" Spigot100
417-59802 1⁄2" Heater Buttress Tailpiece25

2" and 2 1/2" Heater Union O-Rings and Gaskets

Part No.DescriptionCase Quantity
711-40201⁄4" Thick Gasket - 2" Heater Tailpiece500
711-4010Gasket - 2" Heater Tailpiece500
805-0229O-Ring - 2" Heater100
711-40302" Heater Tailpiece Gasket - with O-Ring Rib500
711-60202 1⁄2" Heater Union Gasket500