Watts LFN36M1 1/2 - Part of the LFN36 Series Strata Systems The Roof Overflow Drain offers

The Roof Overflow Drain offers a dependable solution for managing excess water when primary roof drains are overwhelmed

Z415BL-4NH

ZC163-10NL

External heat may be required when installing it at lower temperatures

and other zones where reliable drainage is critical under load

Watts LFN36M1 1/2 - Part of the LFN36 Series Strata Systems The Roof Overflow Drain offersThis 1 2 inch lead free vacuum relief valve is suitable for low pressure steam and water service, and is ideal for use in domestic water heaters and supply tanks. This valve automatically allows air to enter into the piping system to prevent vacuum conditions that could siphon water from the system and damage water equipment. It consists of a lead free brass body construction with NPT male inlet connection, and a protective cap. Maximum working