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Watts RK 994/994RPDA-CK1 6 First Check Kit for Backflow Preventers - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts RK 994/994RPDA-CK1 6 First Check Kit for Backflow Preventers

The WATTS Backflow Preventer Repair Kits: First Check Kit (SKU 3G-OTH-436825) is a repair kit for Watts backflow preventers. It includes a seat and is compatible with a 6 in valve size, Series 994RPDA, and…

SKU 3G-OTH-436825

Also listed as: RK994994RPDACK16 · RK 994 994RPDA CK1 6 · RK-994-994RPDA-CK1-6

Brand
Watts
Item
RK 994/994RPDA-CK1 6 First Check Kit for Backflow Preventers
Category
Repair Kits & Parts for Watts Backflow Preventers
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Delivery
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Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Watts
Manufacturer Part Number
RK 994/994RPDA-CK1 6
Type
36JD28
Includes
Seat
Compatible Valve Size
6 in
Compatible with Series
994RPDA
Compatible with Mfr. Model No.
994

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

Product Description

The WATTS Backflow Preventer Repair Kits: First Check Kit (SKU 3G-OTH-436825) is a repair kit for Watts backflow preventers. It includes a seat and is compatible with a 6 in valve size, Series 994RPDA, and Manufacturer Model No. 994.

Frequently Asked Questions

What is the Watts backflow preventer first check kit used for?

The Watts first check kit is used to repair the primary check valve in a backflow preventer assembly. It is designed for Watts Series 994RPDA and Model 994 backflow preventers with a 6-inch valve size, helping maintain cross-connection control in commercial and industrial water systems.

What are the specifications of the Watts RK 994/994RPDA-CK1 6 repair kit?

This Watts repair kit includes a seat and is compatible with a 6-inch valve size. It is designed for use with Watts Series 994RPDA and Manufacturer Model No. 994 backflow preventers. The manufacturer part number is RK 994/994RPDA-CK1 6, and it is also compatible with Part No. 994-NRS.

Where to buy Watts backflow preventer repair kits worldwide?

3G Electric supplies Watts backflow preventer repair kits, including the first check kit for 6-inch valves, to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this genuine Watts repair component.

How to install a Watts backflow preventer first check kit?

To install the Watts first check kit, isolate the backflow preventer and relieve system pressure. Remove the access cover and replace the existing check assembly with the new kit components, including the seat. Reassemble and test per local plumbing codes. Always follow Watts' published instructions for your specific model.

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 second check kit is designed for use with Watts Series 994 backflow preventers in 6-inch valve sizes. It includes an O-ring groove seal to restore proper sealing of the second check valve assembly, helping maintain cross-connection control in plumbing systems
Watts
This second check kit is designed for use with Watts Series 994 backflow preventers in 6-inch valve sizes. It includes an O-ring groove seal to restore proper sealing of the second check valve assembly, helping maintain cross-connection control in plumbing systems
WATTS Backflow Preventer Repair Kits: First Check Kit, 994-NRS/994-NRS/994-NRS/994BLT, 994/994RPDA (MPN RK994/994RPDA-CK1-21/2-4)
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WATTS Backflow Preventer Repair Kits: First Check Kit, 994-NRS/994-NRS/994-NRS/994BLT, 994/994RPDA (MPN RK994/994RPDA-CK1-21/2-4)
WATTS Backflow Preventer Repair Kits: First Check Kit, 994-NRS/994-NRS, 994/994RPDA, Repair Kit (MPN RK 994/994RPDA-CK1 8-10)
Watts
WATTS Backflow Preventer Repair Kits: First Check Kit, 994-NRS/994-NRS, 994/994RPDA, Repair Kit (MPN RK 994/994RPDA-CK1 8-10)
This repair kit is designed for Watts 994 and 994RPDA series backflow preventers with valve sizes 8 in to 10 in. It includes a cam arm and is used to replace the second check valve assembly, maintaining backflow protection in water systems
Watts
This repair kit is designed for Watts 994 and 994RPDA series backflow preventers with valve sizes 8 in to 10 in. It includes a cam arm and is used to replace the second check valve assembly, maintaining backflow protection in water systems
WATTS Backflow Preventer Repair Kits: Second Check Kit, 994-NRS/994-NRS/994-NRS/994BLT, 994/994RPDA (MPN RK994/994RPDA-CK2-21/2-4)
Watts
WATTS Backflow Preventer Repair Kits: Second Check Kit, 994-NRS/994-NRS/994-NRS/994BLT, 994/994RPDA (MPN RK994/994RPDA-CK2-21/2-4)
This repair kit includes a cam check and a check O-ring for servicing the first check valve in a backflow prevention assembly. Compatible with Watts 774DCDA series backflow preventers with a 6 in valve size. Used to maintain proper sealing and prevent reverse flow in water systems
Watts
This repair kit includes a cam check and a check O-ring for servicing the first check valve in a backflow prevention assembly. Compatible with Watts 774DCDA series backflow preventers with a 6 in valve size. Used to maintain proper sealing and prevent reverse flow in water systems

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Repair kit for Watts Series 007 backflow preventers, compatible with valve sizes 1-1/2 in to 2 in and model 007MIQTS-S. Includes a cover O-ring. Used to replace worn rubber components during servicing of backflow preventers in water systems
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This total relief kit is designed for use with Watts Series 909 backflow preventers with an 8-inch valve size, including model 8 LF909M1. The kit includes a stem O-ring for replacing worn internal components. It is suitable for maintaining relief valve function in water systems
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This total relief kit is designed for use with Watts Series 909 backflow preventers with an 8-inch valve size, including model 8 LF909M1. The kit includes a stem O-ring for replacing worn internal components. It is suitable for maintaining relief valve function in water systems
This repair kit is designed for servicing Watts Series 909 backflow preventers with a 4-inch valve size, including model 4 LF909. It contains a sleeve O-ring to replace worn components and restore proper sealing. Used in commercial and industrial water systems to maintain backflow protection
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This repair kit is designed for servicing the first check assembly in Watts Series 009 backflow preventers. It includes a check assembly and is compatible with 3/4 in valve sizes, fitting models 3/4 009M3 and LF009M3. Used in commercial and residential water systems to maintain backflow prevention
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This total relief kit is designed for use with Watts Series 009 backflow preventers, compatible with M2 valve sizes. It includes a cover O-ring and is intended for replacing worn relief valve components in models such as 2 009M2 and LF009M2
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This repair kit is for servicing the first check valve in Watts 009 series backflow preventers. It includes a cover O-ring and is compatible with 2-inch valve sizes, fitting models 2 009M2 and LF009M2. Used in commercial and industrial water systems to maintain backflow prevention
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Repair kit for Watts 007 series backflow preventers. Includes cover O-ring. Compatible with 1/2 in valve size and model 1/2 LF007. Used to replace worn rubber parts in backflow prevention assemblies
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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