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Watts Backflow Preventer Repair Kits: First Check Kit, 6AUW3, 8 in Compatible Valve Size - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Backflow Preventer Repair Kits: First Check Kit, 6AUW3, 8 in Compatible Valve Size

The WATTS Backflow Preventer Repair Kits: First Check Kit (SKU 3G-OTH-436681) is a repair kit designed for Watts backflow preventers. It includes a Red Silicone Disc Elastomer and is compatible with an 8 in valve…

SKU 3G-OTH-436681

Also listed as: RK757757DCDACK18 · RK 757 757DCDA CK1 8 · RK-757-757DCDA-CK1-8

Brand
Watts
Item
Backflow Preventer Repair Kits: First Check Kit, 6AUW3, 8 in Compatible Valve Size
Category
Repair Kits & Parts for Watts Backflow Preventers
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Technical Specifications

Watts
Manufacturer Part Number
RK 757/757DCDA-CK1 8
Type
6AUW3, Repair Kit
Includes
Red Silicone Disc Elastomer
Compatible Valve Size
8 in
Compatible with Series
757
Compatible with Mfr. Model No.
757DCDA

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

Product Description

The WATTS Backflow Preventer Repair Kits: First Check Kit (SKU 3G-OTH-436681) is a repair kit designed for Watts backflow preventers. It includes a Red Silicone Disc Elastomer and is compatible with an 8 in valve size, Series 757, and Mfr. Model No. 757DCDA. The manufacturer part number is RK 757/757DCDA-CK1 8.

Frequently Asked Questions

What is the Watts backflow preventer first check repair kit used for?

This repair kit is used to service Watts Series 757 backflow preventers with an 8-inch valve size. It replaces the first check valve assembly, including the red silicone disc elastomer, to restore proper backflow protection in commercial water systems.

What are the specifications of the Watts RK 757/757DCDA-CK1 8 repair kit?

The kit is compatible with an 8-inch valve size and Watts Series 757 and model 757DCDA. It includes a red silicone disc elastomer. The manufacturer part number is RK 757/757DCDA-CK1 8, and the part number is 6AUW3.

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 order the RK 757/757DCDA-CK1 8 kit for your 8-inch valve.

How to install a Watts first check repair kit?

To install, isolate the backflow preventer and relieve pressure. Remove the first check cover, replace the old disc with the new red silicone elastomer from the kit, and reassemble. Follow Watts' instructions for torque and testing to ensure proper sealing and compliance.

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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