Watts RK957/RPDA-RT-RS RPZ Backflow Preventer

The Watts RK957/RPDA-RT-RS is a genuine total rubber parts kit (red silicone) for 2 1/2" to 4" 957 / 957RPDA reduced pressure zone (RPZ) backflow preventers. It features a silicone seat.

This 2 1/2 to 4 inch check assembly red silicone disc kit includes the parts necessary to repair or replace the first check of series 957, reduced pressure zone assembly, or reduced pressure detector assembly, series 957RPDA. This kit consists of all parts necessary to repair the second check assembly of the applicable valve. All parts are genuine and original to the valve.

Features

• Factory replacement kit
• No special tools required for changing parts
• All parts are made of high quality materials
• Original parts insure long service life

Common Questions

Will this kit fit my valve?

The RK957/RPDA-RT-RS fits 2 1/2", 3" and 4" sizes 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 total rubber parts kit (red silicone) — it carries the factory parts for that subassembly only, not a whole-valve rebuild. See the Watts spec sheet for the exact part breakdown.

Are these genuine Watts parts?

Yes. This is the factory RK957/RPDA-RT-RS 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 957 / 957RPDA, order the RV kit for rubber parts only or the VT kit to replace the complete relief valve assembly. This total rubber parts kit (red silicone) covers a different part of the assembly.

Specifications

• Type: RPZ
• Seat / Seal Material: Silicone
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: RK957/RPDA-RT-RS
• Lead-Free: No
• Product Role: repair_kit
• Kit Type: Total Rubber Parts Kit (Red Silicone)
• Fits Brand: Watts
• Fits Valve Series: 957;957RPDA
• Fits Valve Size: 2 1/2";3";4"
• Used With: 2 1/2" 957;2 1/2" 957RPDA;3" 957;3" 957RPDA;4" 957;4" 957RPDA
• Watts Ordering Code: 0889373
• Genuine OEM Parts: Yes