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Watts Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 1RCX3/1RCX5/1RCX7 - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 1RCX3/1RCX5/1RCX7

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

Brand
Watts
Item
Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 1RCX3/1RCX5/1RCX7
Category
Repair Kits & Parts for Watts Backflow Preventers
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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
Compatible with Grainger Part No.
1RCX7
View Full Spec Sheet

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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 Grainger 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 Grainger Part No. 1RCX7. 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
Industrial burner gas safety systems — Watts HF2000 filters with GF-series seal kits maintain clean, regulated gas supply to burner pilot and main flame controls
Commercial heating and boiler installations — Modular filter assemblies support preventive maintenance and component replacement without full system shutdown
Process gas delivery pipelines — DN25 through DN125 filter bodies accommodate varying flow rates and inlet pressures across manufacturing and chemical processes
Gas pressure regulation benches — Multi-stage Watts filter platforms integrate with pressure reducers and safety shutoff valves in test and calibration environments
Equipment retrofit and upgrade projects — Available connection sizes and seal kits enable adaptation of newer Watts components into legacy gas control systems
Planned maintenance and spare-parts inventory — Filter seal kits allow facilities to stock consumables in advance, reducing downtime during scheduled gas system servicing

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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