Watts RK 719-S 3/4 Lead-Free Double Check Backflow Preventer

The Watts RK 719-S 3/4 is a genuine lead-free seat kit for 3/4" LF719 / 719 double check valve assemblies. This model is certified lead-free for potable-water installations.

This 3/4" double check seat valve repair kit for series 719 is designed to protect drinking water supplies from dangerous cross-connections in accordance with national plumbing codes and water authority requirements. This kit consists of a seat, seat O-ring and cover O-ring. Check with local inspection authorities for installation requirements.

Features

• Factory Replacement Kit
• No special tools required for changing parts
• All parts are made of high quality materials
• Double check valve seat kit

Common Questions

Will this kit fit my valve?

The RK 719-S 3/4 fits the 3/4" size of Watts series LF719 / 719. Kits are size- and series-specific, so match the model stamped on your valve body or cover before ordering.

What's included in this kit?

This is a seat kit. Kit consists of: a seat, seat O-ring and cover O-ring.

Are these genuine Watts parts?

Yes. This is the factory RK 719-S 3/4 kit built with genuine Watts OEM components. Aftermarket parts can void your assembly approval and are commonly rejected by inspectors at annual test time.

Which kit do I need if my relief valve failed the test?

For a relief valve fault on LF719 / 719, order the RV kit for rubber parts only or the VT kit to replace the complete relief valve assembly. This seat kit covers a different part of the assembly.

Specifications

• Type: Double Check
• Pack Quantity: 8
• Country of Origin: China
• Warranty: 1 Year Limited
• MPN: RK 719-S 3/4
• Lead-Free: Yes
• Product Role: repair_kit
• Kit Type: Seat Kit
• Fits Brand: Watts
• Fits Valve Series: LF719;719
• Fits Valve Size: 3/4"
• Used With: 3/4" LF719;3/4" 719
• Kit Contents: Kit consists of: a seat, seat O-ring and cover O-ring.
• Watts Ordering Code: 0889070
• Genuine OEM Parts: Yes