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Watts Second Check Valve Repair Kit: Second Check Kit, LF909-DNRS-FS/LF909-DNRS-FS - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Second Check Valve Repair Kit: Second Check Kit, LF909-DNRS-FS/LF909-DNRS-FS

The Watts Second Check Valve Repair Kit (Second Check Kit, SKU LFRK 909-CK2 4) is a repair kit for Watts backflow preventers, compatible with Series 909 and model 4 LF909. It includes a spring assembly and is…

SKU 3G-OTH-436708

Also listed as: LFRK909CK24 · LFRK 909 CK2 4 · LFRK-909-CK2-4

Brand
Watts
Item
Second Check Valve Repair Kit: Second Check Kit, LF909-DNRS-FS/LF909-DNRS-FS
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
LFRK 909-CK2 4
Type
793PG4/793PG6
Includes
Spring Assembly
Compatible Valve Size
4 in
Compatible with Series
909
Compatible with Mfr. Model No.
4 LF909

Technical Documents

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

Product Description

The Watts Second Check Valve Repair Kit (Second Check Kit, SKU LFRK 909-CK2 4) is a repair kit for Watts backflow preventers, compatible with Series 909 and model 4 LF909. It includes a spring assembly and is designed for 4-inch valves (MPN LFRK 909-CK2 4).

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 Second Check Valve Repair Kit used for?

The Watts Second Check Valve Repair Kit is used to service the second check valve in Watts Series 909 backflow preventers. It is designed for 4-inch valves and includes a spring assembly. This kit helps maintain backflow prevention in commercial and industrial water systems, ensuring compliance with plumbing codes.

What are the specifications of the Watts Second Check Valve Repair Kit?

The Watts Second Check Valve Repair Kit (MPN LFRK 909-CK2 4) is compatible with 4-inch valves, Series 909, and model 4 LF909. It includes a spring assembly and is compatible with part number LF909-DNRS-FS. This kit is manufactured by Watts for use in backflow preventer repair.

Where to buy the Watts Second Check Valve Repair Kit worldwide?

You can source the Watts Second Check Valve Repair Kit through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time on this Watts repair kit.

How to install the Watts Second Check Valve Repair Kit?

To install the Watts Second Check Valve Repair Kit, first isolate the backflow preventer and relieve pressure. Remove the second check valve assembly, replace worn components with the included spring assembly, and reassemble. Follow Watts' generic guidelines for Series 909 to ensure proper sealing and 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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WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, LF909-DOSY-FS, 6 LF909, Repair Kit (MPN 909 6 2nd Check Kit)
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WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, LF909M1-DOSY-FS, 8 LF909M1, Repair Kit (MPN 909 8 2nd Check Kit)
WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, LF909-DOSY-FS/LF909-DOSY-FS/LF909-DOSY-FS/LF909-DNRS-FS (MPN 909 2-1/2 - 3 2nd Check Kit)
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