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Watts Backflow Preventer Repair Kits: First or Second Check Kit, 36JC65, 719/LF719 - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Backflow Preventer Repair Kits: First or Second Check Kit, 36JC65, 719/LF719

The WATTS Backflow Preventer Repair Kits: First or Second Check Kit (SKU 3G-OTH-436791) is a repair kit for Watts backflow preventers, including a disc holder. It is compatible with 1/2 in valve sizes and the…

SKU 3G-OTH-436791

Also listed as: RK719CK412 · RK 719 CK4 1 2 · RK-719-CK4-1-2

Brand
Watts
Item
Backflow Preventer Repair Kits: First or Second Check Kit, 36JC65, 719/LF719
Category
Repair Kits & Parts for Watts Backflow Preventers
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Watts
Manufacturer Part Number
RK 719-CK4-1/2
Type
36JC65, 719/LF719, RK-LF719
Includes
Disc Holder
Compatible Valve Size
1/2 in
Compatible with Series
RK-LF719
Compatible with Mfr. Model No.
719

Technical Documents

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

Product Description

The WATTS Backflow Preventer Repair Kits: First or Second Check Kit (SKU 3G-OTH-436791) is a repair kit for Watts backflow preventers, including a disc holder. It is compatible with 1/2 in valve sizes and the RK-LF719 series, specifically for model 719 (MPN RK 719-CK4-1/2).

Frequently Asked Questions

What is the Watts backflow preventer repair kit used for?

The Watts backflow preventer repair kit is used to replace the first or second check assembly in Watts 719 series backflow preventers. It includes a disc holder and is designed for 1/2 in valve sizes, helping maintain backflow protection in commercial and residential plumbing systems.

What are the specifications of the Watts RK 719-CK4-1/2 repair kit?

The Watts RK 719-CK4-1/2 repair kit includes a disc holder and is compatible with 1/2 in valve sizes. It fits the Watts 719 model and the RK-LF719 series. The manufacturer part number is RK 719-CK4-1/2, and it corresponds to part number 36JC65.

Where to buy Watts backflow preventer repair kits worldwide?

You can source Watts backflow preventer repair kits worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the RK 719-CK4-1/2 kit.

How to install a Watts backflow preventer repair kit?

To install the Watts repair kit, first isolate the backflow preventer and relieve pressure. Remove the old check assembly and replace it with the new kit, ensuring the disc holder is correctly seated. Reassemble the valve and test for proper operation per local plumbing codes.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC68/36JC69, 719/LF719, RK-LF719 (MPN RK 719-CK4 1-1/4-1-1/2)
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WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC53/36JC54/36JC59/36JC60 (MPN LFRK 709-CK4 2-1/2-3)

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