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

Watts Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC68/36JC69 - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC68/36JC69

The WATTS Backflow Preventer Repair Kit (SKU 844GD3, MPN RK 719-RT 1-1/4-1-1/2) is a complete rubber parts kit for Watts backflow preventers. It is compatible with Series 719 and Model 719 valves in size 1-1/4 in…

SKU 3G-OTH-436810

Brand
Watts
Item
Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC68/36JC69
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
RK 719-RT 1-1/4-1-1/2
Type
36JC68/36JC69, 719/LF719, 719
Includes
(2) Check Cover O-Rings
Compatible Valve Size
1-1/4 in
Compatible with Series
719
Compatible with Mfr. Model No.
719
Compatible with Grainger Part No.
36JC68
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 Backflow Preventer Repair Kit (SKU 844GD3, MPN RK 719-RT 1-1/4-1-1/2) is a complete rubber parts kit for Watts backflow preventers. It is compatible with Series 719 and Model 719 valves in size 1-1/4 in, and includes (2) Check Cover O-Rings.

Frequently Asked Questions

What is the Watts backflow preventer repair kit used for?

The Watts backflow preventer repair kit is used to replace worn rubber components in Watts Series 719 and Model 719 backflow preventers. It includes check cover O-rings to restore sealing performance, helping prevent reverse water flow in commercial and industrial plumbing systems. This kit is essential for routine maintenance and compliance with backflow prevention regulations.

What are the specifications of the Watts RK 719-RT repair kit?

The Watts RK 719-RT repair kit is compatible with 1-1/4 in valve sizes and fits Watts Series 719 and Model 719 backflow preventers. It includes (2) check cover O-rings. The manufacturer part number is RK 719-RT 1-1/4-1-1/2, and it is also compatible with Grainger part number 36JC68. This kit contains only rubber parts for sealing repairs.

Where to buy Watts backflow preventer repair kits worldwide?

You can source Watts backflow preventer repair kits worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead times. 3G Electric supplies genuine Watts repair kits like the RK 719-RT for Series 719 valves.

How to install a Watts backflow preventer repair kit?

To install the Watts RK 719-RT repair kit, first isolate the valve and relieve system pressure. Remove the valve cover and replace the old check cover O-rings with the new ones included in the kit. Reassemble the valve and test for leaks. Always follow the manufacturer's instructions for your specific Watts Series 719 model to ensure proper sealing and compliance.

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 Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC66, 719/LF719, Repair Kit, 719 (MPN RK 719-RT 3/4). Key specifications — Compatible Valve Size: 3/4 in; Compatible with Grainger Part No.: 36JC66; Compatible with Series: 719; Compatible with Mfr. Model No.: LF719; Includes: (2) Check Seat O-Rings.
Watts
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC66, 719/LF719, Repair Kit, 719 (MPN RK 719-RT 3/4). Key specifications — Compatible Valve Size: 3/4 in; Compatible with Grainger Part No.: 36JC66; Compatible with Series: 719; Compatible with Mfr. Model No.: LF719; Includes: (2) Check Seat O-Rings.
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC65, 719/LF719, Repair Kit, 719 (MPN RK 719-RT 1/2). Key specifications — Compatible Valve Size: 1/2 in; Compatible with Grainger Part No.: 36JC65; Compatible with Series: 719; Compatible with Mfr. Model No.: LF719; Includes: (2) Check Rubbers.
Watts
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC65, 719/LF719, Repair Kit, 719 (MPN RK 719-RT 1/2). Key specifications — Compatible Valve Size: 1/2 in; Compatible with Grainger Part No.: 36JC65; Compatible with Series: 719; Compatible with Mfr. Model No.: LF719; Includes: (2) Check Rubbers.
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC67, 1 in Compatible Valve Size (MPN RK 719-RT 1). Key specifications — Compatible Valve Size: 1 in; Compatible with Grainger Part No.: 36JC67; Compatible with Series: 719; Compatible with Mfr. Model No.: LF719; Includes: (2) Check Rubbers.
Watts
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC67, 1 in Compatible Valve Size (MPN RK 719-RT 1). Key specifications — Compatible Valve Size: 1 in; Compatible with Grainger Part No.: 36JC67; Compatible with Series: 719; Compatible with Mfr. Model No.: LF719; Includes: (2) Check Rubbers.
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC70, 2 in Compatible Valve Size (MPN RK 719-RT 2). Key specifications — Compatible Valve Size: 2 in; Compatible with Grainger Part No.: 36JC70; Compatible with Series: 719; Compatible with Mfr. Model No.: 719; Includes: (2) Check Seat O-Rings.
Watts
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC70, 2 in Compatible Valve Size (MPN RK 719-RT 2). Key specifications — Compatible Valve Size: 2 in; Compatible with Grainger Part No.: 36JC70; Compatible with Series: 719; Compatible with Mfr. Model No.: 719; Includes: (2) Check Seat O-Rings.
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC53/36JC54/36JC59/36JC60, 709 (MPN RK 709-RT 2-1/2-3). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 36JC60; Compatible with Series: 709; Compatible with Mfr. Model No.: LF709; Includes: (2) Cover O-Rings.
Watts
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC53/36JC54/36JC59/36JC60, 709 (MPN RK 709-RT 2-1/2-3). Key specifications — Compatible Valve Size: 2-1/2 in to 3 in; Compatible with Grainger Part No.: 36JC60; Compatible with Series: 709; Compatible with Mfr. Model No.: LF709; Includes: (2) Cover O-Rings.
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC55/36JC61, 709/LF709, 709 (MPN RK 709-RT 4). Key specifications — Compatible Valve Size: 4 in; Compatible with Grainger Part No.: 36JC61; Compatible with Series: 709; Compatible with Mfr. Model No.: LF709; Includes: (2) Cover O-Rings.
Watts
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC55/36JC61, 709/LF709, 709 (MPN RK 709-RT 4). Key specifications — Compatible Valve Size: 4 in; Compatible with Grainger Part No.: 36JC61; Compatible with Series: 709; Compatible with Mfr. Model No.: LF709; Includes: (2) Cover O-Rings.

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.