418-4 | 1/2" FNPT x 3/4" MNPT Hy-Vent | Taco Connection Type 2_Female Coupler 1" Utility Gas Ball Valve

1" Utility Gas Ball Valve

Black Iron Schedule 40 Steel Nipple 1-1/2" Diameter

Black zinc die cast Swing handle coinproof/padlocking handle on main door of disconnect enclosures

Averaging Element

418-4 | 1/2" FNPT x 3/4" MNPT Hy-Vent | Taco Connection Type 2_Female Coupler 1" Utility Gas Ball Valve1 2" FNPT x 3 4" MNPT Hy Vent Replaces 418 3 You already know Taco Hy Vents as the industry standard for dependable, long life service. The high capacity, float style vent can be placed either on the boiler or at the high points throughout the system. With threaded connections 1 8", 1 4", 1 2" and 3 4" and operating pressure ratings up to 150 psi, these brass body, nickel plated vents meet the system requirements of even your largest installations.