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Watts RK 957/957RPDA-RT 21/2-4 Repair Kit for Backflow Preventers - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts RK 957/957RPDA-RT 21/2-4 Repair Kit for Backflow Preventers

This WATTS Complete Rubber Parts Kit is a repair kit for Watts backflow preventers, compatible with Series RK-957 and Mfr. Model No. 957RPDA. It includes a Relief Valve Inlet Coupler O-Ring and fits valve sizes from…

SKU 3G-OTH-436781

Also listed as: RK957957RPDART2124 · RK 957 957RPDA RT 21 2 4 · RK-957-957RPDA-RT-21-2-4

Brand
Watts
Item
RK 957/957RPDA-RT 21/2-4 Repair Kit for Backflow Preventers
Part Number
RK 957/957RPDA-RT 21/2-4
Category
Repair Kits & Parts for Watts Backflow Preventers
Available to Order
Also known as:RK 957/957RPDA-RT 21/2-4Watts
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Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Watts
Manufacturer Part Number
RK 957/957RPDA-RT 21/2-4
Type
1RCX3/1RCX5/1RCX7, 957/957RPDA
Includes
Relief Valve Inlet Coupler O-Ring
Compatible Valve Size
2-1/2 in to 4 in
Compatible with Series
RK-957
Compatible with Mfr. Model No.
957RPDA

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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

This WATTS Complete Rubber Parts Kit is a repair kit for Watts backflow preventers, compatible with Series RK-957 and Mfr. Model No. 957RPDA. It includes a Relief Valve Inlet Coupler O-Ring and fits valve sizes from 2-1/2 in to 4 in. The kit is identified by Manufacturer Part Number RK 957/957RPDA-RT 21/2-4 and Part No. 1RCX7.

Frequently Asked Questions

What is the Watts backflow preventer repair kit used for?

This Watts repair kit is used to replace worn rubber parts in backflow preventers, ensuring proper sealing and preventing reverse flow in water systems. It is suitable for commercial and industrial plumbing applications where Watts Series RK-957 or Model 957RPDA devices are installed.

What are the specifications of the Watts RK 957/957RPDA-RT 21/2-4 repair kit?

This Watts repair kit includes a Relief Valve Inlet Coupler O-Ring and is compatible with valve sizes from 2-1/2 in to 4 in. It fits Series RK-957 and Mfr. Model No. 957RPDA, with Part No. 957OSY4. The manufacturer part number is RK 957/957RPDA-RT 21/2-4.

Where to buy Watts backflow preventer repair kits worldwide?

3G Electric supplies Watts backflow preventer repair kits worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the RK 957/957RPDA-RT 21/2-4 kit for your Watts backflow preventer.

How to install a Watts backflow preventer rubber parts kit?

To install this Watts repair kit, first depressurize and isolate the backflow preventer. Remove the old rubber components, clean mating surfaces, and install the new parts including the Relief Valve Inlet Coupler O-Ring. Follow Watts' generic installation guidelines for Series RK-957 devices to ensure proper sealing.

Used in

Common applications for Watts
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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Watts Products

3G Electric supplies Watts repair kits & parts for watts backflow preventers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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