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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
(6) O-rings and (1) grease packet
ZS400BS-4NL
anchor flange and 4 inch push on connection
Key design factors include total vent area per code
Watts LF909-OSY-ALERT 4 - Part of the LF909 Large Series nwgf (6) O-rings and (1) greaseThis 4 inch lead free reduced pressure zone backflow preventer assembly with SentryPlus Alert technology for flood detection is designed to prevent the reverse flow of contaminated water from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements, as well as provide continuous monitoring, multi channel alerts, and automatic shutoff
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