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Watts Relief Valve Repair Kit: Rubber Parts Kit, 818DD4/818DD6 - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Relief Valve Repair Kit: Rubber Parts Kit, 818DD4/818DD6

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

Brand
Watts
Item
Relief Valve Repair Kit: Rubber Parts Kit, 818DD4/818DD6
Category
Repair Kits & Parts for Watts Backflow Preventers
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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
Compatible with Grainger Part No.
818DD6
View Full Spec Sheet

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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 Grainger 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 Grainger part number 818DD6.

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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