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Watts Relief Valve Repair Kit: Rubber Parts Kit, 3/4 LF909-QT-FS/1 LF909-QT-FS - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Relief Valve Repair Kit: Rubber Parts Kit, 3/4 LF909-QT-FS/1 LF909-QT-FS

The WATTS Relief Valve Repair Kit is a rubber parts kit designed for servicing Watts backflow preventers. It includes an RV O-Ring and is compatible with valve sizes from 3/4 in to 1 in, specifically for Series 909…

SKU 3G-OTH-436760

Also listed as: LFRK909RV341 · LFRK 909 RV 3 4 1 · LFRK-909-RV-3-4-1

Brand
Watts
Item
Relief Valve Repair Kit: Rubber Parts Kit, 3/4 LF909-QT-FS/1 LF909-QT-FS
Category
Repair Kits & Parts for Watts Backflow Preventers
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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-RV 3/4-1
Type
818DD4/818DD6
Includes
RV O-Ring
Compatible Valve Size
3/4 in to 1 in
Compatible with Series
909
Compatible with Mfr. Model No.
3/4 -1 LF909

Technical Documents

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

Product Description

The WATTS Relief Valve Repair Kit is a rubber parts kit designed for servicing Watts backflow preventers. It includes an RV O-Ring and is compatible with valve sizes from 3/4 in to 1 in, specifically for Series 909 models such as the 3/4 -1 LF909. This kit is identified by manufacturer part number LFRK 909-RV 3/4-1 and part number 818DD6.

Frequently Asked Questions

What is the Watts relief valve repair kit used for?

The Watts relief valve repair kit is used to service backflow preventers, specifically the Series 909 models. It replaces worn rubber parts, including the RV O-Ring, to restore proper sealing and prevent cross-connection contamination in commercial and industrial water systems.

What are the specifications of the Watts LFRK 909-RV 3/4-1 repair kit?

This Watts repair kit, model LFRK 909-RV 3/4-1, includes an RV O-Ring and is compatible with valve sizes from 3/4 in to 1 in. It fits Series 909 backflow preventers, such as the 3/4 -1 LF909, and corresponds to part number 1 LF909-QT-FS.

Where to buy Watts relief valve repair kits worldwide?

3G Electric supplies Watts relief valve repair kits worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on the LFRK 909-RV 3/4-1 kit.

How to install the Watts relief valve repair kit?

To install the Watts relief valve repair kit, first depressurize and drain the backflow preventer. Remove the relief valve assembly, replace the old O-ring with the included RV O-Ring, and reassemble. Follow standard backflow maintenance practices and test per local codes 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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, 3/4 LF909-QT-FS/1 LF909-QT-FS, 3/4 -1 LF909, 909 (MPN LFRK 909-RT 3/4-1)
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WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, 3/4 LF909-QT-FS/1 LF909-QT-FS, 3/4 -1 LF909, 909 (MPN LFRK 909-RT 3/4-1)
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)
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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 Relief Valve Repair Kit: Relief Valve Kit, LF909-DOSY-FS/LF909-DOSY-FS/LF909-DOSY-FS/LF909-DNRS-FS, 2 1/2-3 LF909, 909 (MPN LFRK 909-RV 2-1/2-3)
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WATTS Relief Valve Repair Kit: Relief Valve Kit, LF909-DOSY-FS/LF909-DOSY-FS/LF909-DOSY-FS/LF909-DNRS-FS, 2 1/2-3 LF909, 909 (MPN LFRK 909-RV 2-1/2-3)
WATTS Relief Valve Repair Kit: Relief Valve Repair Kit, 3/4 LF909-QT-FS/1 LF909-QT-FS, 3/4 -1 LF909, Repair Kit (MPN 909-3/4 - 1 Relief Valve)
Watts
WATTS Relief Valve Repair Kit: Relief Valve Repair Kit, 3/4 LF909-QT-FS/1 LF909-QT-FS, 3/4 -1 LF909, Repair Kit (MPN 909-3/4 - 1 Relief Valve)
WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, 2 LF909M1-QT-FS/1-1/2 LF909M1-QT-FS/1-1/4 LF909M1-QT-FS, Repair Kit (MPN LFRK 909M1-RT 1-1/4-2)
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WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, 2 LF909M1-QT-FS/1-1/2 LF909M1-QT-FS/1-1/4 LF909M1-QT-FS, Repair Kit (MPN LFRK 909M1-RT 1-1/4-2)
WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, LF909-DOSY-FS, 6 in Compatible Valve Size (MPN LFRK 909-RT 6)
Watts
WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, LF909-DOSY-FS, 6 in Compatible Valve Size (MPN LFRK 909-RT 6)

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