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Watts Relief Valve Repair Kit: Relief Valve Repair Kit, 818DD1/818DD7/818DE2 - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Relief Valve Repair Kit: Relief Valve Repair Kit, 818DD1/818DD7/818DE2

The Watts Relief Valve Repair Kit is a repair kit for Watts backflow preventers, designed for use with the Series 909. It includes (2) Piston O-Rings and is compatible with valve size M1, manufacturer model number…

SKU 3G-OTH-436861

Brand
Watts
Item
Relief Valve Repair Kit: Relief Valve Repair Kit, 818DD1/818DD7/818DE2
Category
Repair Kits & Parts for Watts Backflow Preventers
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Technical Specifications

Watts
Manufacturer Part Number
909 M1 1-1/4 - 2 Relief Valve
Type
818DD1/818DD7/818DE2, 909
LF909M1
1 1/4 - 2
Includes
(2) Piston O-Ring
Compatible Valve Size
M1
Compatible with Series
909
Compatible with Mfr. Model No.
1-1/4 - 2 LF909M1
Compatible with Grainger Part No.
818DE2
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 repair kit for Watts backflow preventers, designed for use with the Series 909. It includes (2) Piston O-Rings and is compatible with valve size M1, manufacturer model number 1-1/4 - 2 LF909M1, and Grainger part number 818DE2.

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 Relief Valve Repair Kit used for?

The Watts Relief Valve Repair Kit is used to service backflow preventers in the Series 909. It replaces worn piston O-rings to restore proper relief valve function in commercial and industrial water systems, helping prevent cross-connection contamination.

What are the specifications of the Watts Relief Valve Repair Kit?

This repair kit is compatible with valve size M1 and manufacturer model number 1-1/4 - 2 LF909M1. It includes (2) Piston O-Rings and is designed for Watts Series 909 backflow preventers. The kit type is 818DD1/818DD7/818DE2, 909.

Where to buy the Watts Relief Valve Repair Kit worldwide?

You can source the Watts Relief Valve Repair Kit through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive genuine Watts repair components for your backflow preventer.

How to install the Watts Relief Valve Repair Kit?

To install, first depressurize the backflow preventer and remove the relief valve assembly. Replace the old piston O-rings with the two new O-rings from the kit, ensuring proper seating. Reassemble the valve and test for leaks per standard backflow maintenance procedures.

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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