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Watts Backflow Preventer Repair Kits: Second Check Kit, 6AUW3 - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Backflow Preventer Repair Kits: Second Check Kit, 6AUW3

The WATTS Backflow Preventer Repair Kits: Second Check Kit (SKU 3G-OTH-436683) is a repair kit for Watts backflow preventers, including a Second Check Module. It is compatible with an 8 in valve size, Series RK-757…

SKU 3G-OTH-436683

Also listed as: RK757757DCDACK28 · RK 757 757DCDA CK2 8 · RK-757-757DCDA-CK2-8

Brand
Watts
Item
Backflow Preventer Repair Kits: Second Check Kit, 6AUW3
Category
Repair Kits & Parts for Watts Backflow Preventers
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Watts
Manufacturer Part Number
RK 757/757DCDA-CK2 8
Type
6AUW3
Includes
Second Check Module
Compatible Valve Size
8 in
Compatible with Series
RK-757
Compatible with Mfr. Model No.
757DCDA

Technical Documents

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

Product Description

The WATTS Backflow Preventer Repair Kits: Second Check Kit (SKU 3G-OTH-436683) is a repair kit for Watts backflow preventers, including a Second Check Module. It is compatible with an 8 in valve size, Series RK-757, and Mfr. Model No. 757DCDA, with Manufacturer Part Number RK 757/757DCDA-CK2 8.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Watts backflow preventer second check kit used for?

The Watts backflow preventer second check kit is used to repair the second check valve assembly in Watts 757DCDA series backflow preventers. It is essential for maintaining backflow protection in commercial and industrial water systems, ensuring compliance with plumbing codes by preventing contaminated water from flowing backward into the potable water supply.

What are the specifications of the Watts RK 757/757DCDA-CK2 8 second check kit?

The Watts RK 757/757DCDA-CK2 8 second check kit includes a second check module and is compatible with an 8 in valve size. It is designed for use with Watts Series RK-757 and Mfr. Model No. 757DCDA. The manufacturer part number is RK 757/757DCDA-CK2 8, and it is also compatible with Part No. 6AUW3.

Where to buy Watts backflow preventer repair kits worldwide?

You can source Watts backflow preventer repair kits, such as the RK 757/757DCDA-CK2 8 second check kit, through 3G Electric. As a global industrial equipment distributor since 1990, 3G Electric handles full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive genuine Watts components for your backflow prevention system.

How to install a Watts second check kit in a backflow preventer?

To install a Watts second check kit, first isolate the backflow preventer and relieve system pressure. Remove the access cover and existing second check assembly. Insert the new second check module from the kit, ensuring proper orientation. Reassemble the cover and test the assembly per local codes. Always follow Watts' installation instructions for the 757DCDA series to ensure correct function.

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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