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Watts ARK HMB/BLT CK1 2.5-3 Backflow Preventer Repair Kit - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts ARK HMB/BLT CK1 2.5-3 Backflow Preventer Repair Kit

The WATTS Backflow Preventer Repair Kit (SKU ARK HMB/BLT CK1 2.5-3, MPN ARK HMB/BLT CK1 2.5-3) is a repair kit for Watts backflow preventers, compatible with valve sizes 2-1/2 in to 3 in. It is designed for use with…

SKU 3G-OTH-436876

Also listed as: ARKHMBBLTCK1253 · ARK HMB BLT CK1 2 5 3 · ARK-HMB-BLT-CK1-2-5-3

Brand
Watts
Item
ARK HMB/BLT CK1 2.5-3 Backflow Preventer Repair Kit
Category
Repair Kits & Parts for Watts Backflow Preventers
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Watts
Manufacturer Part Number
ARK HMB/BLT CK1 2.5-3
Type
6AUW6
Compatible Valve Size
2-1/2 in to 3 in
Compatible with Series
5000SS
Compatible with Mfr. Model No.
4000BLT

Technical Documents

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

Product Description

The WATTS Backflow Preventer Repair Kit (SKU ARK HMB/BLT CK1 2.5-3, MPN ARK HMB/BLT CK1 2.5-3) is a repair kit for Watts backflow preventers, compatible with valve sizes 2-1/2 in to 3 in. It is designed for use with the Watts Series 5000SS and Mfr. Model No. 4000BLT, and corresponds to Part No. 6AUW6.

Frequently Asked Questions

What is the Watts backflow preventer repair kit used for?

This Watts repair kit is used to service backflow preventers in commercial and industrial water systems. It restores proper sealing and check-valve function, helping maintain cross-connection control and compliance with plumbing codes. 3G Electric supplies this kit for worldwide delivery.

What are the specifications of the Watts ARK HMB/BLT CK1 2.5-3 repair kit?

The Watts repair kit (MPN ARK HMB/BLT CK1 2.5-3) is compatible with valve sizes 2-1/2 in to 3 in. It works with Watts Series 5000SS and Model 4000BLT backflow preventers. The cross-reference is Part No. 6000HMB Hydrant BFP. 3G Electric sources this genuine Watts kit globally.

Where to buy a Watts backflow preventer repair kit worldwide?

3G Electric supplies the Watts ARK HMB/BLT CK1 2.5-3 repair kit to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this genuine Watts part.

How to install a Watts backflow preventer repair kit?

Installation requires depressurizing the system, removing the old internal components, and replacing them with the new kit parts per Watts instructions. Always follow local plumbing codes and use proper tools. 3G Electric provides this genuine Watts kit; consult a licensed plumber for installation.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This repair kit is designed for use with Watts backflow preventers. It is compatible with valve sizes 2-1/2 in to 3 in and fits Series 5000SS and Model 6000HMB. The kit includes seals and components for restoring sealing and internal function in commercial and industrial water systems
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This repair kit is designed for use with Watts backflow preventers. It is compatible with valve sizes 2-1/2 in to 3 in and fits Series 5000SS and Model 6000HMB. The kit includes seals and components for restoring sealing and internal function in commercial and industrial water systems
This repair kit is designed for servicing Watts Series 5000SS and Model 6000HMB backflow preventers. It is compatible with valve sizes 2-1/2 in to 3 in. The kit includes seals and gaskets for replacing worn internal components, restoring proper backflow protection in water systems
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This repair kit is designed for servicing Watts Series 5000SS and Model 6000HMB backflow preventers. It is compatible with valve sizes 2-1/2 in to 3 in. The kit includes seals and gaskets for replacing worn internal components, restoring proper backflow protection in water systems
Repair kit for Watts Series 757 backflow preventers with 6-inch valve size. Includes check module O-ring for maintaining cross-connection control in commercial water systems
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Repair kit for Watts Series 757 backflow preventers with 6-inch valve size. Includes check module O-ring for maintaining cross-connection control in commercial water systems
Repair kit for Watts Series 757 and 757DCDA backflow preventers with 8-inch valve size. Includes red silicone disc elastomer for first check valve assembly replacement. Used in commercial water systems to maintain backflow protection
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Repair kit for Watts Series 757 and 757DCDA backflow preventers with 8-inch valve size. Includes red silicone disc elastomer for first check valve assembly replacement. Used in commercial water systems to maintain backflow protection
Repair kit for Watts Series 957 and Model 757 backflow preventers. Includes a check module O-ring. Compatible with 6-inch valve sizes. Used to replace worn check module components in commercial water systems
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Repair kit for Watts Series 957 and Model 757 backflow preventers. Includes a check module O-ring. Compatible with 6-inch valve sizes. Used to replace worn check module components in commercial water systems
This repair kit includes a second check module for Watts 757DCDA series backflow preventers. Compatible with 6-inch valve assemblies, it is used to replace worn or failed check modules in commercial water systems to maintain backflow protection
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This repair kit includes a second check module for Watts 757DCDA series backflow preventers. Compatible with 6-inch valve assemblies, it is used to replace worn or failed check modules in commercial water systems to maintain backflow protection

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This repair kit includes a second check module for Watts backflow preventers. It is compatible with valve sizes 2-1/2 in to 4 in and fits Series 957 and 957RPDA models. Used to restore check-valve function in backflow prevention assemblies
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This repair kit includes a second check module for Watts backflow preventers. It is compatible with valve sizes 2-1/2 in to 4 in and fits Series 957 and 957RPDA models. Used to restore check-valve function in backflow prevention assemblies
Repair kit for the first check valve in Watts 800M4 series pressure vacuum breakers. Includes bonnet O-ring. Compatible with valve sizes 1/2 in to 3/4 in and model 1/2 - 3/4 800M4. Used to service backflow preventers in water systems
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Repair kit for the first check valve in Watts 800M4 series pressure vacuum breakers. Includes bonnet O-ring. Compatible with valve sizes 1/2 in to 3/4 in and model 1/2 - 3/4 800M4. Used to service backflow preventers in water systems
This repair kit includes two disc assemblies for restoring sealing performance in Watts Series 009 backflow preventers. Compatible with valve sizes 3/4 to 1 inch and model 009-M1-QTS. Used for maintenance in water supply systems to ensure backflow protection
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This repair kit includes two disc assemblies for restoring sealing performance in Watts Series 009 backflow preventers. Compatible with valve sizes 3/4 to 1 inch and model 009-M1-QTS. Used for maintenance in water supply systems to ensure backflow protection
Repair kit for Watts backflow preventers, includes disc holder. Compatible with 2-inch valve sizes in Series RK-LF719 and Model LF719. Used for servicing first or second check valves in cross-connection control systems
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Repair kit for Watts backflow preventers, includes disc holder. Compatible with 2-inch valve sizes in Series RK-LF719 and Model LF719. Used for servicing first or second check valves in cross-connection control systems
Repair kit for Watts 009 series backflow preventers. Includes seat. Compatible with 3/4-inch valve sizes, models 3/4 009M2 and LF009M2. Used to restore relief-valve function in backflow prevention assemblies
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Repair kit for Watts 009 series backflow preventers. Includes seat. Compatible with 3/4-inch valve sizes, models 3/4 009M2 and LF009M2. Used to restore relief-valve function in backflow prevention assemblies
Repair kit for first or second check valves in Watts backflow preventers. Includes cover O-ring. Compatible with 3/4 in valve size and models LF719, 719/LF719, and RK-LF719 series
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Repair kit for Watts 009M3 backflow preventers, compatible with 3/4 in valve size. Includes two seat O-rings for restoring sealing function in backflow prevention assemblies
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This repair kit is designed for servicing Watts Series 909 and model 4-6 LF909 backflow preventers. It includes an RV disc assembly and is compatible with valve sizes from 4 to 6 inches. Used in commercial and industrial water systems to replace worn relief valve components and maintain backflow protection
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