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Watts Second Check Valve Repair Kit: Second Check Valve Repair Kit, 522P30/812MY5/818DE7 - 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, 522P30/812MY5/818DE7

The WATTS Second Check Valve Repair Kit is a repair kit for Watts backflow preventers, specifically designed for the 007 Series. This kit includes a seat and is compatible with valve size M3, fitting manufacturer…

SKU 3G-OTH-436759

Brand

Watts

Item

Second Check Valve Repair Kit: Second Check Valve Repair Kit, 522P30/812MY5/818DE7

Category

Repair Kits & Parts for Watts Backflow Preventers

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Technical Specifications

Watts

Manufacturer Part Number

007 M3-3/4 2nd Check Kit 

Type

522P30/812MY5/818DE7, Repair Kit 

Includes

Seat 

Compatible Valve Size

M3

Compatible with Series

007

Compatible with Mfr. Model No.

3/4 007M3/LF007M3 

Compatible with Grainger Part No.

812MY5 

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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, specifically designed for the 007 Series. This kit includes a seat and is compatible with valve size M3, fitting manufacturer model numbers 3/4 007M3 and LF007M3. It is identified by manufacturer part number 007 M3-3/4 2nd Check Kit.

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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WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, 793HG2/793HL5/818DE6/818DE8, 007 (MPN 1-1/4-1 ½ 007M2/LF007M2). Key specifications — Compatible Valve Size: M2; Compatible with Grainger Part No.: 818DE8; Compatible with Series: 007; Compatible with Mfr. Model No.: 1-1/4-1-1/2 007M2/LF007M2; Includes: Cover O-Ring.

WATTS Second Check Valve Repair Kit: Second Check Valve Repair Kit, 793HG2/793HL5/818DE6/818DE8, 007 (MPN 1-1/4-1 ½ 007M2/LF007M2). Key specifications — Compatible Valve Size: M2; Compatible with Grainger Part No.: 818DE8; Compatible with Series: 007; Compatible with Mfr. Model No.: 1-1/4-1-1/2 007M2/LF007M2; 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 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.

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WATTS First Check Valve Repair Kit: First Check Valve Repair Kit, 793PG1/793PG2/793PG3/793PG5 (MPN 909 2-1/2 - 3 1st Check Kit). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 793PG1; Compatible with Series: RK-LF909; Compatible with Mfr. Model No.: 2-1/2-3 LF909; Includes: Cover O-Ring.

WATTS First Check Valve Repair Kit: First Check Valve Repair Kit, 793PG1/793PG2/793PG3/793PG5 (MPN 909 2-1/2 - 3 1st Check Kit). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 793PG1; Compatible with Series: RK-LF909; Compatible with Mfr. Model No.: 2-1/2-3 LF909; Includes: Cover O-Ring.

WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC58/36JC64, 709/LF709, RK-LF709 (MPN LFRK 709-CK4 10). Key specifications — Compatible Valve Size: 10 in; Compatible with Grainger Part No.: 36JC58; Compatible with Series: RK-LF709; Compatible with Mfr. Model No.: LF709; Includes: Disc and Spring Assembly.

WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC58/36JC64, 709/LF709, RK-LF709 (MPN LFRK 709-CK4 10). Key specifications — Compatible Valve Size: 10 in; Compatible with Grainger Part No.: 36JC58; Compatible with Series: RK-LF709; Compatible with Mfr. Model No.: LF709; Includes: Disc and Spring Assembly.