Watts RK 770DCDA-RC4 8 Double Check Backflow Preventer

The Watts RK 770DCDA-RC4 8 is a genuine check rubber parts kit (first or second) for 8" 770 / 770DCDA double check valve assemblies. It features a rubber seat.

This 8" check rubber parts repair kit for series 770DCDA-RC 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 cover O-ring, bolt O-ring and a disc for one check. 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
• Check rubber parts kit

Common Questions

Will this kit fit my valve?

The RK 770DCDA-RC4 8 fits the 8" size of Watts series 770 / 770DCDA. 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 check rubber parts kit (first or second). Kit consists of: a cover O-ring, bolt O-ring and a disc for one check.

Are these genuine Watts parts?

Yes. This is the factory RK 770DCDA-RC4 8 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?

Not this one — this kit services the check valve. A failed relief valve needs the RV (rubber parts) or VT (total relief valve) kit for 770 / 770DCDA in your size; a total repair (T) kit covers the relief valve and both checks.

Specifications

• Type: Double Check
• Seat / Seal Material: Rubber
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: RK 770DCDA-RC4 8
• Lead-Free: No
• Product Role: repair_kit
• Kit Type: Check Rubber Parts Kit (First or Second)
• Fits Brand: Watts
• Fits Valve Series: 770;770DCDA
• Fits Valve Size: 8"
• Used With: 8" 770;8" 770DCDA
• Kit Contents: Kit consists of: a cover O-ring, bolt O-ring and a disc for one check.
• Watts Ordering Code: 0887084
• Genuine OEM Parts: Yes