We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

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

Available to Order

Trade pricing by quote — replies within 24h

Qty

WhatsApp an engineer

No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.

Create free account →Log in

Worldwide Shipping

Air & sea freight

Datasheet on Request

Technical specs

1-Day Quote

Replies within 24h

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

Technical Documents

No technical documents available for this product.

Request documentation →

Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.

Talk to an engineer

Ask a question

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.

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.

Browse all Watts products →Contact our engineers →

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description

WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, Check Assembly/Cover O-Ring, 009 (MPN 009 1-1/4 - 2 2nd Check Kit). Key specifications — Compatible Valve Size: 1-1/4 in to 2 in; Compatible with Series: 009; Compatible with Mfr. Model No.: 1-1/4-2 009/LF009; Includes: Check Assembly.

WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, Check Assembly/Cover O-Ring, 009 (MPN 009 1-1/4 - 2 2nd Check Kit). Key specifications — Compatible Valve Size: 1-1/4 in to 2 in; Compatible with Series: 009; Compatible with Mfr. Model No.: 1-1/4-2 009/LF009; Includes: Check Assembly.

WATTS Second Check Valve Repair Kit: Second Check Kit, 26X140/429J30/793HG8/818DD8, 1 009M2/LF009M2 (MPN 009 M2 1 2nd Check Kit). Key specifications — Compatible Valve Size: 1 in; Compatible with Grainger Part No.: 818DD8; Compatible with Series: 009; Compatible with Mfr. Model No.: 1 009M2/LF009M2; Includes: Cover O-Ring.

WATTS Second Check Valve Repair Kit: Second Check Kit, 26X140/429J30/793HG8/818DD8, 1 009M2/LF009M2 (MPN 009 M2 1 2nd Check Kit). Key specifications — Compatible Valve Size: 1 in; Compatible with Grainger Part No.: 818DD8; Compatible with Series: 009; Compatible with Mfr. Model No.: 1 009M2/LF009M2; Includes: Cover O-Ring.

WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, 429J28/793HF6/793HL3/818DD5, 009 (MPN 009-1/4 - 1/2 2nd Check Kit). Key specifications — Compatible Valve Size: 1/4 in to 1/2 in; Compatible with Grainger Part No.: 429J28; Compatible with Series: 009; Compatible with Mfr. Model No.: 1/4 - 1/2 009/LF009; Includes: Cover O-Ring.

WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, 429J28/793HF6/793HL3/818DD5, 009 (MPN 009-1/4 - 1/2 2nd Check Kit). Key specifications — Compatible Valve Size: 1/4 in to 1/2 in; Compatible with Grainger Part No.: 429J28; Compatible with Series: 009; Compatible with Mfr. Model No.: 1/4 - 1/2 009/LF009; Includes: Cover O-Ring.

WATTS Second Check Valve Repair Kit: Second Check Kit, 1 1/4 in to 2 in/M1 Compatible Valve Size (MPN 009 M1 1-1/4 - 2 2nd Check Kit). Key specifications — Compatible Valve Size: 1-1/4 in to 2 in; Compatible with Series: 009; Compatible with Mfr. Model No.: 1-1/4-2 009M1/LF009M1; Includes: Cover O-Ring.

WATTS Second Check Valve Repair Kit: Second Check Kit, 1 1/4 in to 2 in/M1 Compatible Valve Size (MPN 009 M1 1-1/4 - 2 2nd Check Kit). Key specifications — Compatible Valve Size: 1-1/4 in to 2 in; Compatible with Series: 009; Compatible with Mfr. Model No.: 1-1/4-2 009M1/LF009M1; Includes: Cover O-Ring.

WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, Check Assembly/Cover O-Ring, 009 (MPN 009-3/4 - 1 2nd Check Kit). Key specifications — Compatible Valve Size: 3/4 in to 1 in; Compatible with Series: 009; Compatible with Mfr. Model No.: 3/4 - 1 009/LF009; Includes: Cover O-Ring.

WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, Check Assembly/Cover O-Ring, 009 (MPN 009-3/4 - 1 2nd Check Kit). Key specifications — Compatible Valve Size: 3/4 in to 1 in; Compatible with Series: 009; Compatible with Mfr. Model No.: 3/4 - 1 009/LF009; Includes: Cover O-Ring.

WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, 522P30/812MY5/818DE7, Repair Kit (MPN 007 M3-3/4 2nd Check Kit). Key specifications — Compatible Valve Size: M3; Compatible with Grainger Part No.: 812MY5; Compatible with Series: 007; Compatible with Mfr. Model No.: 3/4 007M3/LF007M3; Includes: Seat.

WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, 522P30/812MY5/818DE7, Repair Kit (MPN 007 M3-3/4 2nd Check Kit). Key specifications — Compatible Valve Size: M3; Compatible with Grainger Part No.: 812MY5; Compatible with Series: 007; Compatible with Mfr. Model No.: 3/4 007M3/LF007M3; Includes: Seat.

More from Watts

View all Watts parts →

WATTS Backflow Preventer Repair Kits: First Check Kit, 36JC71/36JC72/36JC73/36JC78/36JC79/36JC80 (MPN RK774/774DCDA-CK1-21/2-4). Key specifications — Compatible Valve Size: 2-1/2 in to 4 in; Compatible with Grainger Part No.: 36JC80; Compatible with Series: RK-774; Compatible with Mfr. Model No.: 774; Includes: Cam Check with a Check O-Ring.

WATTS Backflow Preventer Repair Kits: First Check Kit, 36JC71/36JC72/36JC73/36JC78/36JC79/36JC80 (MPN RK774/774DCDA-CK1-21/2-4). Key specifications — Compatible Valve Size: 2-1/2 in to 4 in; Compatible with Grainger Part No.: 36JC80; Compatible with Series: RK-774; Compatible with Mfr. Model No.: 774; Includes: Cam Check with a Check O-Ring.

WATTS Backflow Preventer Repair Kits: Repair Kit, 6AUW6, 2 1/2 in to 3 in Compatible Valve Size (MPN ARK HMB/BLT VT 2.5-3). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 6AUW6; Compatible with Series: 5000SS; Compatible with Mfr. Model No.: 6000HMB.

WATTS Backflow Preventer Repair Kits: Repair Kit, 6AUW6, 2 1/2 in to 3 in Compatible Valve Size (MPN ARK HMB/BLT VT 2.5-3). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 6AUW6; Compatible with Series: 5000SS; Compatible with Mfr. Model No.: 6000HMB.

WATTS Test Cock: Test Cock, 3/4 in Connection Size - Side 1, NPT, Repair Part, Bronze (MPN 3/4 LF-TC 757/957 6-10). Key specifications — Compatible with Series: Watts Series LF-TC, 3/4 in.

WATTS Test Cock: Test Cock, 3/4 in Connection Size - Side 1, NPT, Repair Part, Bronze (MPN 3/4 LF-TC 757/957 6-10). Key specifications — Compatible with Series: Watts Series LF-TC, 3/4 in.

WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, 6LL73, 2 in Compatible Valve Size (MPN RK 009M2 RT 2). Key specifications — Compatible Valve Size: 2 in; Compatible with Grainger Part No.: 6LL73; Compatible with Series: 009; Compatible with Mfr. Model No.: 009QT; Includes: (2) RV Seat O-Ring.

WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, 6LL73, 2 in Compatible Valve Size (MPN RK 009M2 RT 2). Key specifications — Compatible Valve Size: 2 in; Compatible with Grainger Part No.: 6LL73; Compatible with Series: 009; Compatible with Mfr. Model No.: 009QT; Includes: (2) RV Seat O-Ring.

WATTS Backflow Preventer Repair Kit: Backflow Preventer Repair Kit, 522P30/522P31, 2 1/2 -3 LF009 (MPN 009 2-1/2 - 3 Rubber Kit). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 522P30; Compatible with Series: 009; Compatible with Mfr. Model No.: 2-1/2 -3 LF009; Includes: Second Check Assembly.

WATTS Backflow Preventer Repair Kit: Backflow Preventer Repair Kit, 522P30/522P31, 2 1/2 -3 LF009 (MPN 009 2-1/2 - 3 Rubber Kit). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 522P30; Compatible with Series: 009; Compatible with Mfr. Model No.: 2-1/2 -3 LF009; Includes: Second Check Assembly.

WATTS Relief Valve Repair Kit: Relief Valve Repair Kit, 429J28/793HF6/793HL3/818DD5, Repair Kit, 009 (MPN 009-1/4 - 1/2 Relief Valve). Key specifications — Compatible Valve Size: 1/4 in to 1/2 in; Compatible with Grainger Part No.: 793HL3; Compatible with Series: 009; Compatible with Mfr. Model No.: 1/4 - 1/2 009/LF009; Includes: Seat.

WATTS Relief Valve Repair Kit: Relief Valve Repair Kit, 429J28/793HF6/793HL3/818DD5, Repair Kit, 009 (MPN 009-1/4 - 1/2 Relief Valve). Key specifications — Compatible Valve Size: 1/4 in to 1/2 in; Compatible with Grainger Part No.: 793HL3; Compatible with Series: 009; Compatible with Mfr. Model No.: 1/4 - 1/2 009/LF009; Includes: Seat.

WATTS First Check Valve Repair Kit: First Check Valve Repair Kit, Check Assembly/Cover O-Ring, 009 (MPN 009-3/4 - 1 1st Check Kit). Key specifications — Compatible Valve Size: 3/4 in to 1 in; Compatible with Series: 009; Compatible with Mfr. Model No.: 3/4 - 1 009/LF009; Includes: Cover O-Ring.

WATTS First Check Valve Repair Kit: First Check Valve Repair Kit, Check Assembly/Cover O-Ring, 009 (MPN 009-3/4 - 1 1st Check Kit). Key specifications — Compatible Valve Size: 3/4 in to 1 in; Compatible with Series: 009; Compatible with Mfr. Model No.: 3/4 - 1 009/LF009; Includes: Cover O-Ring.

WATTS Total Relief Kit: Total Relief Kit, 522P30/522P31, 2 1/2 in to 3 in Compatible Valve Size, 009 (MPN 009 2-1/2 - 3 Total Relief Kit). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 522P31; Compatible with Series: 009; Compatible with Mfr. Model No.: 2-1/2 -3 LF009; Includes: Second Check Assembly.

WATTS Total Relief Kit: Total Relief Kit, 522P30/522P31, 2 1/2 in to 3 in Compatible Valve Size, 009 (MPN 009 2-1/2 - 3 Total Relief Kit). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 522P31; Compatible with Series: 009; Compatible with Mfr. Model No.: 2-1/2 -3 LF009; Includes: Second Check Assembly.