This compact modular design consists of a stainless steel body with a quick access sleeve, link check valves, domestic outside stem and yoke (OSY) resilient seated gate valves, test cocks, and a corrosive resistant bottom-mounted pressure relief valve. The assembly comes furnished with a bypass without a meter to detect underground leaks and unauthorized water use. This backflow assembly contains a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. When paired with an add-on connection kit, the sensor is activated to relay alerts for potential flooding events.

Features

• Provides protection to the potable water system from contamination in accordance with national plumbing codes
• Utilized in health-hazard applications to protect against backsiphonage, backpressure, and the fouling of either check valve
• Features Lead Free* construction to comply with Lead Free* installation requirements
• Includes a flood sensor with SentryPlus Alert® technology to detect continuous discharge from the relief valve
• Flood sensor relays a signal that triggers a multichannel alert (call, email, text) to notify personnel about potential flooding (with add-on sensor connection kit)
• Extremely compact design and 70% lighter than traditional designs
• Type 304 (Schedule 40) stainless steel housing and sleeve
• Groove fittings for integral pipeline adjustment
• Patented link check for lowest pressure loss
• Unmatched ease of serviceability with replaceable check disc rubber
• Available with domestic OSY resilient seated gate valves
• Bottom-mounted cast stainless steel relief valve
• Bypass without a meter to detect leakage or theft of water from the fire sprinkler system
• Includes an integrated supervisory switch as an option on each gate valve of the OS&Y model

An add-on connection kit is required to activate the flood sensor. Without the connection kit, the flood sensor is a passive component and will not communicate with any other device.