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

Watts First Check Valve Repair Kit: First Check Valve Repair Kit, 818DD4/818DD6

The WATTS First Check Valve Repair Kit is a repair kit for Watts backflow preventers, compatible with the RK-909 series. It is designed for valve sizes from 3/4 in to 1 in and is compatible with manufacturer model…

SKU 3G-OTH-436724

Brand
Watts
Item
First Check Valve Repair Kit: First Check Valve Repair Kit, 818DD4/818DD6
Category
Repair Kits & Parts for Watts Backflow Preventers
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Technical Specifications

Watts
Manufacturer Part Number
909-3/4 - 1 1st Check Kit
Type
818DD4/818DD6, 3/4 -1 LF909
Includes
Lubricant
Compatible Valve Size
3/4 in to 1 in
Compatible with Series
RK-909
Compatible with Mfr. Model No.
3/4 -1 LF909
Compatible with Grainger Part No.
818DD4
View Full Spec Sheet

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

Product Description

The WATTS First Check Valve Repair Kit is a repair kit for Watts backflow preventers, compatible with the RK-909 series. It is designed for valve sizes from 3/4 in to 1 in and is compatible with manufacturer model number 3/4 -1 LF909 (MPN 909-3/4 - 1 1st Check Kit). The kit includes lubricant.

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 First Check Valve Repair Kit used for?

The Watts First Check Valve Repair Kit is used to service and rebuild the first check valve in Watts backflow preventers. It is designed for valve sizes from 3/4 in to 1 in and is compatible with the RK-909 series and model 3/4 -1 LF909. The kit includes lubricant for proper reassembly.

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

The Watts First Check Valve Repair Kit (MPN 909-3/4 - 1 1st Check Kit) is compatible with valve sizes 3/4 in to 1 in and the RK-909 series. It fits Watts model 3/4 -1 LF909 and Grainger part number 818DD4. The kit includes lubricant for installation.

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

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

How to install the Watts First Check Valve Repair Kit?

To install the Watts First Check Valve Repair Kit, first depressurize and drain the backflow preventer. Remove the first check valve assembly, clean all mating surfaces, and replace worn components with the new parts from the kit. Apply the included lubricant as needed, then reassemble and test per manufacturer guidelines.

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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