Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
Watts First Check Valve Repair Kit: First Check Valve Kit, 793PG1/793PG2/793PG3/793PG5 - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts First Check Valve Repair Kit: First Check Valve Kit, 793PG1/793PG2/793PG3/793PG5

The WATTS First Check Valve Repair Kit (SKU 30UK47, MPN LFRK 909-CK1 2-1/2-3) is a repair kit for Watts backflow preventers, compatible with Series 909 and Mfr. Model No. 2-1/2-3 LF909. It is designed for valve sizes…

SKU 3G-OTH-436700

Brand
Watts
Item
First Check Valve Repair Kit: First Check Valve Kit, 793PG1/793PG2/793PG3/793PG5
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.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Watts
Manufacturer Part Number
LFRK 909-CK1 2-1/2-3
Type
793PG1/793PG2/793PG3/793PG5, Repair Kit
Includes
Lubricant
Compatible Valve Size
2-1/2 in to 3 in
Compatible with Series
909
Compatible with Mfr. Model No.
2-1/2-3 LF909
Compatible with Grainger Part No.
793PG1
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 First Check Valve Repair Kit (SKU 30UK47, MPN LFRK 909-CK1 2-1/2-3) is a repair kit for Watts backflow preventers, compatible with Series 909 and Mfr. Model No. 2-1/2-3 LF909. It is designed for valve sizes 2-1/2 in to 3 in and includes lubricant.

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 backflow preventers in commercial and industrial water systems. It repairs the first check valve on Series 909 models, including the 2-1/2-3 LF909, for valve sizes 2-1/2 in to 3 in, ensuring reliable backflow protection.

What are the specifications of the Watts LFRK 909-CK1 2-1/2-3 repair kit?

The Watts LFRK 909-CK1 2-1/2-3 repair kit is compatible with valve sizes 2-1/2 in to 3 in and Series 909 backflow preventers, including Mfr. Model No. 2-1/2-3 LF909. It includes lubricant and is designed for Grainger Part No. 793PG1, 793PG2, 793PG3, and 793PG5.

Where to buy Watts First Check Valve Repair Kit worldwide?

3G Electric supplies the Watts First Check Valve Repair Kit (SKU 30UK47) worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to order this genuine Watts repair kit for your backflow preventer.

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, replace worn components with the kit's parts, apply the included lubricant, and reassemble. Follow Watts' Series 909 manual for torque and testing 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.

You might also need

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

Similar products

Matched by specification & description
WATTS First Check Valve Repair Kit: First Check Valve Repair Kit, 793PG4/793PG6, 4 LF909, Repair Kit (MPN LFRK 909-CK1 4). Key specifications — Compatible Valve Size: 4 in; Compatible with Grainger Part No.: 793PG6; Compatible with Series: RK-LF909; Compatible with Mfr. Model No.: 4 LF909; Includes: A Cover O-Ring.
Watts
WATTS First Check Valve Repair Kit: First Check Valve Repair Kit, 793PG4/793PG6, 4 LF909, Repair Kit (MPN LFRK 909-CK1 4). Key specifications — Compatible Valve Size: 4 in; Compatible with Grainger Part No.: 793PG6; Compatible with Series: RK-LF909; Compatible with Mfr. Model No.: 4 LF909; Includes: A Cover O-Ring.
WATTS Second Check Valve Repair Kit: Second Check Kit, 793PG1/793PG2/793PG3/793PG5, 2 1/2-3 LF909 (MPN LFRK 909-CK2 2-1/2-3). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 793PG2; Compatible with Series: 909; Compatible with Mfr. Model No.: 2-1/2-3 LF909; Includes: Lubricant.
Watts
WATTS Second Check Valve Repair Kit: Second Check Kit, 793PG1/793PG2/793PG3/793PG5, 2 1/2-3 LF909 (MPN LFRK 909-CK2 2-1/2-3). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 793PG2; Compatible with Series: 909; Compatible with Mfr. Model No.: 2-1/2-3 LF909; Includes: Lubricant.
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
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 Kit, 818DD1/818DD7/818DE2, 1 1/4 - 2 LF909M1 (MPN LFRK909M1-CK1 1-1/4-2). Key specifications — Compatible Valve Size: 1-1/4 in to 2 in; Compatible with Grainger Part No.: 818DD7; Compatible with Series: 909; Compatible with Mfr. Model No.: 1-1/4 - 2 LF909M1; Includes: Cover O-Ring.
Watts
WATTS First Check Valve Repair Kit: First Check Valve Kit, 818DD1/818DD7/818DE2, 1 1/4 - 2 LF909M1 (MPN LFRK909M1-CK1 1-1/4-2). Key specifications — Compatible Valve Size: 1-1/4 in to 2 in; Compatible with Grainger Part No.: 818DD7; Compatible with Series: 909; Compatible with Mfr. Model No.: 1-1/4 - 2 LF909M1; Includes: Cover O-Ring.
WATTS Second Check Valve Repair Kit: Second Check Kit, 793PG4/793PG6, 4 in Compatible Valve Size (MPN LFRK 909-CK2 4). Key specifications — Compatible Valve Size: 4 in; Compatible with Grainger Part No.: 793PG6; Compatible with Series: 909; Compatible with Mfr. Model No.: 4 LF909; Includes: Spring Assembly.
Watts
WATTS Second Check Valve Repair Kit: Second Check Kit, 793PG4/793PG6, 4 in Compatible Valve Size (MPN LFRK 909-CK2 4). Key specifications — Compatible Valve Size: 4 in; Compatible with Grainger Part No.: 793PG6; Compatible with Series: 909; Compatible with Mfr. Model No.: 4 LF909; Includes: Spring Assembly.
WATTS First Check Valve Repair Kit: First Check Valve Repair Kit, 793PG4/793PG6, 4 LF909, Repair Kit (MPN 909 4 1st Check Kit). Key specifications — Compatible Valve Size: 4 in; Compatible with Grainger Part No.: 793PG4; Compatible with Series: 909; Compatible with Mfr. Model No.: 4 LF909; Includes: Lubricant.
Watts
WATTS First Check Valve Repair Kit: First Check Valve Repair Kit, 793PG4/793PG6, 4 LF909, Repair Kit (MPN 909 4 1st Check Kit). Key specifications — Compatible Valve Size: 4 in; Compatible with Grainger Part No.: 793PG4; Compatible with Series: 909; Compatible with Mfr. Model No.: 4 LF909; Includes: Lubricant.

More from Watts

View all Watts parts →
WATTS Cap: Cap, 1/8 in Connection Size - Side 1, Male, IPS, Repair Part, Brass, Backflow Preventer (MPN SAE-TC Brass Cap 1/8 SAE). Key specifications — Compatible with Series: 4000B.
Watts
WATTS Cap: Cap, 1/8 in Connection Size - Side 1, Male, IPS, Repair Part, Brass, Backflow Preventer (MPN SAE-TC Brass Cap 1/8 SAE). Key specifications — Compatible with Series: 4000B.
WATTS Test Cock: Test Cock, 1/4 in Connection Size - Side 1, Male, NPT, Repair Part, Female, NSF (MPN 1/4 LFTC). Key specifications — Compatible with Series: 4000B.
Watts
WATTS Test Cock: Test Cock, 1/4 in Connection Size - Side 1, Male, NPT, Repair Part, Female, NSF (MPN 1/4 LFTC). Key specifications — Compatible with Series: 4000B.
WATTS Test Cock: Test Cock, 1/2 in Connection Size - Side 1, NPT, Repair Part, Bronze (MPN 1/2 LF-TC 757/957 2-1/2 - 4). Key specifications — Compatible with Series: Watts Series LF-TC, 1/2 in.
Watts
WATTS Test Cock: Test Cock, 1/2 in Connection Size - Side 1, NPT, Repair Part, Bronze (MPN 1/2 LF-TC 757/957 2-1/2 - 4). Key specifications — Compatible with Series: Watts Series LF-TC, 1/2 in.
WATTS Adapter: Test Cock, 1/4 in Connection Size - Side 1, Male, NPT, Repair Part, Bronze (MPN SAE-TC-Adapter 1/4). Key specifications — Compatible with Series: Watts Series SAE-TC, 1/4 in.
Watts
WATTS Adapter: Test Cock, 1/4 in Connection Size - Side 1, Male, NPT, Repair Part, Bronze (MPN SAE-TC-Adapter 1/4). Key specifications — Compatible with Series: Watts Series SAE-TC, 1/4 in.
WATTS Test Cock: Test Cock, 1/4 in Connection Size - Side 1, Male, NPT, Repair Part, Female, NPT (MPN 1/4 LF-TC). Key specifications — Compatible with Series: 4000B.
Watts
WATTS Test Cock: Test Cock, 1/4 in Connection Size - Side 1, Male, NPT, Repair Part, Female, NPT (MPN 1/4 LF-TC). Key specifications — Compatible with Series: 4000B.
WATTS Backflow Preventer Repair Kits: Second Check Kit, 1RCX3/1RCX5/1RCX7, 957/957RPDA, Repair Kit (MPN RK957/957RPDA-CK2-21/2-4). Key specifications — Compatible Valve Size: 2-1/2 in to 4 in; Compatible with Grainger Part No.: 1RCX3; Compatible with Series: RK-957; Compatible with Mfr. Model No.: 957; Includes: Second Check Module.
Watts
WATTS Backflow Preventer Repair Kits: Second Check Kit, 1RCX3/1RCX5/1RCX7, 957/957RPDA, Repair Kit (MPN RK957/957RPDA-CK2-21/2-4). Key specifications — Compatible Valve Size: 2-1/2 in to 4 in; Compatible with Grainger Part No.: 1RCX3; Compatible with Series: RK-957; Compatible with Mfr. Model No.: 957; Includes: Second Check Module.
WATTS Vacuum Breaker Repair Kit: Pressure Vacuum Breaker Check Kit, 1/2 - 3/4 800M4, Repair Kit (MPN 800M4-1/2-3/4 1st Check Kit). Key specifications — Compatible Valve Size: 1/2 in to 3/4 in; Compatible with Grainger Part No.: 793HT8; Compatible with Series: 800M4; Compatible with Mfr. Model No.: 1/2 - 3/4 800M4; Includes: Bonnet O-Ring.
Watts
WATTS Vacuum Breaker Repair Kit: Pressure Vacuum Breaker Check Kit, 1/2 - 3/4 800M4, Repair Kit (MPN 800M4-1/2-3/4 1st Check Kit). Key specifications — Compatible Valve Size: 1/2 in to 3/4 in; Compatible with Grainger Part No.: 793HT8; Compatible with Series: 800M4; Compatible with Mfr. Model No.: 1/2 - 3/4 800M4; Includes: Bonnet O-Ring.
WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, 6A771, 009-M1-QTS, Repair Kit, 009 (MPN RK 009 RT 3/4 - 1). Key specifications — Compatible Valve Size: 3/4 in to 1 in; Compatible with Grainger Part No.: 6A771; Compatible with Series: 009; Compatible with Mfr. Model No.: 009-M1-QTS; Includes: (2) Disc Assembly.
Watts
WATTS Backflow Preventer Repair Kit: Complete Rubber Parts Kit, 6A771, 009-M1-QTS, Repair Kit, 009 (MPN RK 009 RT 3/4 - 1). Key specifications — Compatible Valve Size: 3/4 in to 1 in; Compatible with Grainger Part No.: 6A771; Compatible with Series: 009; Compatible with Mfr. Model No.: 009-M1-QTS; Includes: (2) Disc Assembly.