We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

Watts Backflow Preventer Repair Kit: Complete Rubber Parts Kit, LF909M1-DOSY-FS - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Backflow Preventer Repair Kit: Complete Rubber Parts Kit, LF909M1-DOSY-FS

The WATTS Backflow Preventer Repair Kit is a complete rubber parts kit designed for servicing Watts backflow preventers. This kit is compatible with an 8-inch valve size and is specifically engineered for Series 909…

SKU 3G-OTH-436867

Also listed as: LFRK909RT8 · LFRK 909 RT 8 · LFRK-909-RT-8

Brand
Watts
Item
Backflow Preventer Repair Kit: Complete Rubber Parts Kit, LF909M1-DOSY-FS
Category
Repair Kits & Parts for Watts Backflow Preventers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Watts
Manufacturer Part Number
LFRK 909-RT 8
Type
793PG8
Includes
Lubricant
Compatible Valve Size
8 in
Compatible with Series
909
Compatible with Mfr. Model No.
8 LF909M1

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The WATTS Backflow Preventer Repair Kit is a complete rubber parts kit designed for servicing Watts backflow preventers. This kit is compatible with an 8-inch valve size and is specifically engineered for Series 909 models, including the 8 LF909M1. It includes lubricant and is identified by manufacturer part number LFRK 909-RT 8.

Frequently Asked Questions

What is the Watts backflow preventer repair kit used for?

The Watts backflow preventer repair kit is used to service and rebuild Watts Series 909 backflow preventers. It contains complete rubber parts and lubricant for replacing worn seals and gaskets, ensuring the valve continues to prevent reverse water flow in commercial and industrial plumbing systems.

What are the specifications of the Watts LFRK 909-RT 8 repair kit?

The Watts LFRK 909-RT 8 repair kit is compatible with an 8-inch valve size and is designed for Series 909 backflow preventers, including model 8 LF909M1. The kit includes lubricant and is identified by manufacturer part number LFRK 909-RT 8. It is also compatible with part number LF909M1-DOSY-FS.

Where to buy Watts backflow preventer repair kits worldwide?

3G Electric supplies Watts backflow preventer repair kits worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the LFRK 909-RT 8 kit for your Watts Series 909 backflow preventer.

How to install a Watts backflow preventer repair kit?

To install the Watts repair kit, first isolate the valve and relieve pressure. Disassemble the Series 909 backflow preventer, remove old rubber parts, and clean all surfaces. Apply the included lubricant to new seals and gaskets, then reassemble following Watts' instructions. Always test for proper operation after installation.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Related products

More from Watts

View all Watts parts
WATTS Backflow Preventer Repair Kits: Second Check Kit, 957-OSY 21/2/957-OSY3/957OSY4, 957/957RPDA, Repair Kit (MPN RK957/957RPDA-CK2-21/2-4)
Watts
WATTS Backflow Preventer Repair Kits: Second Check Kit, 957-OSY 21/2/957-OSY3/957OSY4, 957/957RPDA, Repair Kit (MPN RK957/957RPDA-CK2-21/2-4)
WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, 009-M1-QTS, 009-M1-QTS, Repair Kit, 009 (MPN RK 009 RT 3/4 - 1)
Watts
WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, 009-M1-QTS, 009-M1-QTS, Repair Kit, 009 (MPN RK 009 RT 3/4 - 1)
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, LF719-QT-S, 2 in Compatible Valve Size (MPN RK 719-CK4 2)
Watts
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, LF719-QT-S, 2 in Compatible Valve Size (MPN RK 719-CK4 2)
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, LF719-QT-S, 719/LF719, RK-LF719 (MPN RK 719-CK4-3/4)
Watts
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, LF719-QT-S, 719/LF719, RK-LF719 (MPN RK 719-CK4-3/4)
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 3/4 in Compatible Valve Size, 009M3 (MPN RK 009M3-RT 3/4)
Watts
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 3/4 in Compatible Valve Size, 009M3 (MPN RK 009M3-RT 3/4)
WATTS Relief Valve Repair Kit: Relief Valve Kit, LF909-DNRS-FS/LF909-DNRS-FS/LF909-DOSY-FS, 4-6 LF909, Repair Kit, 909 (MPN LFRK 909-RV 4-6)
Watts
WATTS Relief Valve Repair Kit: Relief Valve Kit, LF909-DNRS-FS/LF909-DNRS-FS/LF909-DOSY-FS, 4-6 LF909, Repair Kit, 909 (MPN LFRK 909-RV 4-6)
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, LF709-NRS/LF709-NRS/LF709-OSY/LF709-OSY (MPN LFRK 709-CK4 2-1/2-3)
Watts
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, LF709-NRS/LF709-NRS/LF709-OSY/LF709-OSY (MPN LFRK 709-CK4 2-1/2-3)
WATTS Vacuum Breaker Repair Kit: Vacuum Breaker Repair Kit, 34LF008PCQT34/1LF008PCQT1, 3/4 - 1 008, Repair Kit (MPN 008-3/4-1 Rubber Kit)
Watts
WATTS Vacuum Breaker Repair Kit: Vacuum Breaker Repair Kit, 34LF008PCQT34/1LF008PCQT1, 3/4 - 1 008, Repair Kit (MPN 008-3/4-1 Rubber Kit)