Watts RK 957/957RPDA-CK1 6 RPZ Backflow Preventer

The Watts RK 957/957RPDA-CK1 6 is a genuine first check kit for 6" 957 / 957RPDA reduced pressure zone (RPZ) backflow preventers. It features a epdm seat.

This first check repair kit provides all the parts necessary to repair or replace the first check on a 6 inch reduced pressure valve assembly backflow preventer, model 957 and reduced pressure detector assembly backflow preventer, model 957DCDA. This kit consists of first check module, check module O-ring and EPDM disc elastomer.

Features

• Factory replacement kit
• No special tools required for servicing
• All parts are made of high quality materials
• Serviceable in the field

Common Questions

Will this kit fit my valve?

The RK 957/957RPDA-CK1 6 fits the 6" size of Watts series 957 / 957RPDA. 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 first check kit. Kit consists of: first check module, check module O-ring and EPDM disc elastomer.

Are these genuine Watts parts?

Yes. This is the factory RK 957/957RPDA-CK1 6 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 957 / 957RPDA in your size; a total repair (T) kit covers the relief valve and both checks.

Specifications

• Type: RPZ
• Seat / Seal Material: EPDM
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: RK 957/957RPDA-CK1 6
• Lead-Free: No
• Product Role: repair_kit
• Kit Type: First Check Kit
• Fits Brand: Watts
• Fits Valve Series: 957;957RPDA
• Fits Valve Size: 6"
• Used With: 6" 957;6" 957RPDA
• Kit Contents: Kit consists of: first check module, check module O-ring and EPDM disc elastomer.
• Genuine OEM Parts: Yes