Watts LF53L-75 1/2 - Part of the LF53L Series ZC100F-8NH The Watts RD-800 is a

The Watts RD-800 is a super-large-area primary roof drain designed for heavy-duty commercial and industrial roof systems that require maximum drainage capacity

Secured solid cover for maintenance access

This ductile iron grate features a bar design and is rated for NDS Class E loads when properly installed

The stylish Kiaro drain grate has a timeless look that complements any surrounding

Epoxy-coated cast iron body for long-lasting durability

Watts LF53L-75 1/2 - Part of the LF53L Series ZC100F-8NH The Watts RD-800 is aThis 1 2 inch lead free pressure relief valve is used in residential applications to protect against excessive pressure on domestic storage tanks and tankless water heaters. It consists of a lead free copper silicon alloy body construction with NPT threaded male inlet and NPT threaded female (drain) outlet, test lever, and stainless steel spring. It is ANSI Z21. 22 approved, listed and certified by CSA. The pressure relief is set at 75 psi (5. 2 bar).