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Watts Second Check Valve Repair Kit: Second Check Valve Repair Kit, 522P30/522P31 - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Second Check Valve Repair Kit: Second Check Valve Repair Kit, 522P30/522P31

The WATTS Second Check Valve Repair Kit is a repair kit for Watts backflow preventers, compatible with Series 009 models. It includes a First Check Assembly and is designed for valve sizes 2-1/2 in to 3 in. The…

SKU 3G-OTH-436802

Brand
Watts
Item
Second Check Valve Repair Kit: Second Check Valve Repair Kit, 522P30/522P31
Category
Repair Kits & Parts for Watts Backflow Preventers
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Technical Specifications

Watts
Manufacturer Part Number
009 2-1/2 - 3 2nd Check Kit
Type
522P30/522P31, 2 1/2 -3 LF009
Includes
First Check Assembly
Compatible Valve Size
2-1/2 in to 3 in
Compatible with Series
009
Compatible with Mfr. Model No.
2-1/2 -3 LF009
Compatible with Grainger Part No.
522P30
View Full Spec Sheet

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

Product Description

The WATTS Second Check Valve Repair Kit is a repair kit for Watts backflow preventers, compatible with Series 009 models. It includes a First Check Assembly and is designed for valve sizes 2-1/2 in to 3 in. The manufacturer part number is 009 2-1/2 - 3 2nd Check Kit, and it is compatible with Grainger Part No. 522P30 and Mfr. Model No. 2-1/2 -3 LF009.

Frequently Asked Questions

What is the Watts second check valve repair kit used for?

The Watts second check valve repair kit is used to service and rebuild the second check valve assembly in Watts Series 009 backflow preventers. It is designed for valve sizes 2-1/2 in to 3 in and includes a first check assembly. This kit helps maintain backflow prevention system reliability in commercial and industrial water applications.

What are the specifications of the Watts 009 2-1/2 - 3 2nd Check Kit?

The Watts 009 2-1/2 - 3 2nd Check Kit is compatible with Series 009 backflow preventers and valve sizes 2-1/2 in to 3 in. It includes a first check assembly. The manufacturer part number is 009 2-1/2 - 3 2nd Check Kit, and it is compatible with Grainger Part No. 522P30 and Mfr. Model No. 2-1/2 -3 LF009.

Where to buy Watts backflow preventer repair kits worldwide?

You can source Watts backflow preventer repair kits, including the 009 2-1/2 - 3 2nd Check Kit, through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to worldwide destinations. Contact 3G Electric for availability and lead time on this Watts repair kit.

How to install a Watts second check valve repair kit?

To install a Watts second check valve repair kit, first depressurize and isolate the backflow preventer. Remove the valve bonnet and extract the old second check assembly. Install the new first check assembly from the kit, ensuring proper orientation. Reassemble the bonnet and test the valve per local codes. Always follow Watts installation instructions for Series 009 models.

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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