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Watts Backflow Preventer Repair Kits: Second Check Kit, 809GD0, 2 in Compatible Valve Size - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Backflow Preventer Repair Kits: Second Check Kit, 809GD0, 2 in Compatible Valve Size

The WATTS Backflow Preventer Repair Kits: Second Check Kit (SKU 3G-OTH-436850) is a repair kit for Watts backflow preventers, compatible with the RK-919 series and LF919 model. It includes a spring and cover O-ring…

SKU 3G-OTH-436850

Also listed as: RK919CK22 · RK 919 CK2 2 · RK-919-CK2-2

Brand
Watts
Item
Backflow Preventer Repair Kits: Second Check Kit, 809GD0, 2 in Compatible Valve Size
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 919-CK2 2
Type
809GD0, RK-919
Includes
Spring and Cover O-Ring
Compatible Valve Size
2 in
Compatible with Series
RK-919
Compatible with Mfr. Model No.
LF919

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-436850) is a repair kit for Watts backflow preventers, compatible with the RK-919 series and LF919 model. It includes a spring and cover O-ring and is designed for a 2-inch compatible valve size. This kit is identified by manufacturer part number RK 919-CK2 2.

Frequently Asked Questions

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

The Watts second check repair kit is used to replace the spring and cover O-ring in the second check valve assembly of compatible Watts backflow preventers. It is designed for the RK-919 series and LF919 model, helping maintain backflow prevention in commercial and industrial water systems.

What are the specifications of the Watts RK 919-CK2 2 repair kit?

The Watts RK 919-CK2 2 repair kit includes a spring and cover O-ring. It is compatible with a 2-inch valve size, the RK-919 series, and the LF919 model. The manufacturer part number is RK 919-CK2 2, and it is also compatible with OEM part number 809GD0.

Where to buy Watts backflow preventer repair kits worldwide?

You can source the Watts RK 919-CK2 2 second check kit worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact them for availability and lead time.

How to install the Watts second check repair kit?

To install the Watts second check kit, first depressurize and isolate the backflow preventer. Remove the second check valve assembly, replace the old spring and cover O-ring with the new components from the RK 919-CK2 2 kit, then reassemble and test for proper sealing. Always follow Watts' instructions.

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 Check Kit, 809GD0, 2 in Compatible Valve Size, 919/LF919 (MPN RK 919-CK1 2)
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WATTS Backflow Preventer Repair Kits: First Check Kit, 809GD0, 2 in Compatible Valve Size, 919/LF919 (MPN RK 919-CK1 2)
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WATTS Backflow Preventer Repair Kits: Second Check Kit, 809GC8/809GC9, 919/LF919, Repair Kit, RK-919 (MPN RK 919-CK2 1-1/4-1-1/2)
WATTS Backflow Preventer Repair Kits: Second Check Kit, 809GC6, 3/4 in Compatible Valve Size, RK-919 (MPN RK 919-CK2-3/4)
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WATTS Backflow Preventer Repair Kits: Second Check Kit, 809GC6, 3/4 in Compatible Valve Size, RK-919 (MPN RK 919-CK2-3/4)
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 809GD0, 2 in Compatible Valve Size (MPN RK 919-RT 2)
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WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 809GD0, 2 in Compatible Valve Size (MPN RK 919-RT 2)
WATTS Backflow Preventer Repair Kits: First Check Kit, 809GC7, 1 in Compatible Valve Size, 919/LF919 (MPN RK 919-CK1 1)
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WATTS Backflow Preventer Repair Kits: First Check Kit, 809GC7, 1 in Compatible Valve Size, 919/LF919 (MPN RK 919-CK1 1)

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