This 1/2 inch Lead Free dual check valve backflow preventer with intermediate atmospheric vent prevents the reverse flow of hot or cold polluted water from entering into the potable water supply. This valve is designed for continuous pressure non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines.

It consists of a lead free forged brass body with stainless steel internal parts, an integral strainer, and two durable tight seating rubber check valves.

Features

• Lead Free* construction with less than 0.25% lead content by weight on wetted surfaces.
• True line-sized construction allows check modules to open further, reducing check fouling.
• Features stainless steel internal parts.
• Provides maximum flow at low pressure drop.
• Furnished with union solder connections to facilitate removal and replacement for maintenance.
• Compact design for economy and performance.
• Designed for easy maintenance.
• Can be installed vertically or horizontally.

NOTICE: This valve should only be used and properly installed so that spillage of water will not cause damage. To avoid water damage due to valve operation, a drain pipe must be installed. It should terminate approximately 12 inches (305mm) above a floor drain or through an air gap piped to a floor drain, or other suitable place of disposal. Under no circumstances should the vent opening or drain line be plugged.