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

3G Electric
Watts 909-3/4 - 1 2nd Check Kit Backflow Preventer Repair Kit - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts 909-3/4 - 1 2nd Check Kit Backflow Preventer Repair Kit

This Watts Backflow Preventer Repair Kit is a repair kit for Watts backflow preventers, compatible with valve sizes 3/4 in to 1 in. It includes a Seat O-Ring and is compatible with Series RK-909, manufacturer part…

SKU 3G-OTH-436870

Also listed as: 9093412ndCheckKit · 909 3 4 1 2nd Check Kit · 909-3-4-1-2nd-Check-Kit

Brand
Watts
Item
909-3/4 - 1 2nd Check Kit Backflow Preventer Repair Kit
Part Number
909-3/4 - 1 2nd Check Kit
Category
Repair Kits & Parts for Watts Backflow Preventers
Available to Order
Also known as:909-3/4 - 1 2nd Check KitWatts
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

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
909-3/4 - 1 2nd Check Kit
Type
818DD4/818DD6, 3/4 -1 LF909
Includes
Seat O-Ring
Compatible Valve Size
3/4 in to 1 in
Compatible with Series
RK-909
Compatible with Mfr. Model No.
3/4 -1 LF909

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

This Watts Backflow Preventer Repair Kit is a repair kit for Watts backflow preventers, compatible with valve sizes 3/4 in to 1 in. It includes a Seat O-Ring and is compatible with Series RK-909, manufacturer part number 909-3/4 - 1 2nd Check Kit, and model 3/4 -1 LF909.

Frequently Asked Questions

What is a Watts backflow preventer repair kit used for?

A Watts backflow preventer repair kit is used to restore the sealing integrity of a backflow preventer valve. It includes a seat O-ring and is compatible with Watts Series RK-909 and model 3/4 -1 LF909 for valve sizes 3/4 in to 1 in.

What are the specifications of the Watts 909-3/4 - 1 2nd Check Kit?

The Watts 909-3/4 - 1 2nd Check Kit is a repair kit for backflow preventers. It includes a seat O-ring and is compatible with valve sizes 3/4 in to 1 in, Series RK-909, and model 3/4 -1 LF909. The manufacturer part number is 909-3/4 - 1 2nd Check Kit.

Where to buy a Watts backflow preventer repair kit worldwide?

3G Electric supplies Watts backflow preventer repair kits worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this repair kit, compatible with Series RK-909 and model 3/4 -1 LF909, to your facility.

How to install a Watts backflow preventer repair kit?

To install a Watts backflow preventer repair kit, first depressurize the system and remove the valve bonnet. Replace the old seat O-ring with the new one from the kit, ensuring proper seating. Reassemble the valve and test for leaks per manufacturer instructions.

Used in

Common applications for Watts
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
Not sure this is the right part? Photo-identify it

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

Compatible alternatives & equivalents

Cross-referenced by specification & description
HAYWARD
HAYWARD
This HAYWARD electric butterfly valve is constructed of CPVC for handling corrosive chemicals media. It features a wafer-style body and operates on 120V power, providing automated flow control in industrial piping systems
HAYWARD
HAYWARD
This CPVC wafer-style electric butterfly valve is designed for corrosive chemicals media. It operates on 120V and features FKM seals. Suitable for on-off or modulating flow control in industrial piping systems handling aggressive fluids
HAYWARD
HAYWARD
This CPVC wafer-style electric butterfly valve is designed for general-service flow control of chemicals media. It operates on 120V and features FKM seals. The valve is suited for on-off or modulating control in industrial piping systems handling corrosive fluids
HAYWARD
HAYWARD
This CPVC general-service electric butterfly valve is designed for corrosive chemicals media. It features a wafer-style body with FKM seals and operates on 120V power. Suitable for on/off or modulating flow control in industrial piping systems

More from Watts

View all Watts parts
Repair kit for Watts Series 909 backflow preventers, compatible with valve sizes 1-1/4 in to 2 in. Includes cover O-ring. For use with models 818DD1, 818DD7, 818DE2, and LF909M1
Watts
Repair kit for Watts Series 909 backflow preventers, compatible with valve sizes 1-1/4 in to 2 in. Includes cover O-ring. For use with models 818DD1, 818DD7, 818DE2, and LF909M1
Watts
Watts
This repair kit is designed for use with Watts SS009 series backflow preventers. It includes a check assembly for servicing the second check valve. Compatible with 1-inch valve sizes, the kit is identified by manufacturer part number RK SS009-CK2 1 and type 793HG5
Repair kit for Watts 709 and RK-LF709 series backflow preventers. Includes cover O-ring. Compatible with 4-inch valve size. Used for replacing first or second check assembly in commercial and industrial water systems
Watts
Repair kit for Watts 709 and RK-LF709 series backflow preventers. Includes cover O-ring. Compatible with 4-inch valve size. Used for replacing first or second check assembly in commercial and industrial water systems
Watts
Watts
Repair kit for Watts backflow preventers, includes cover O-ring and relief valve spring. Compatible with valve sizes 1/4 in to 1/2 in and with Watts Series RK-LF009 and model LF009. Used to restore relief valve function in backflow prevention assemblies
Watts
Watts
Repair kit for Watts 007 series backflow preventers. Includes cover O-ring. Compatible with 1/2 in valve size and model 007. Used to replace first or second check assembly in potable water systems
Repair kit for Watts backflow preventers, compatible with Series RK-774 and Model 774. Includes a cam check with a check O-ring. Fits valve sizes 2-1/2 in to 4 in. Used to replace worn internal components in backflow prevention assemblies
Watts
Repair kit for Watts backflow preventers, compatible with Series RK-774 and Model 774. Includes a cam check with a check O-ring. Fits valve sizes 2-1/2 in to 4 in. Used to replace worn internal components in backflow prevention assemblies
Repair kit for Watts 919 series backflow preventers. Includes a relief valve stem O-ring. Compatible with 1-inch valve sizes and model 919. Used to replace worn rubber parts in backflow preventers for maintaining proper sealing
Watts
Repair kit for Watts 919 series backflow preventers. Includes a relief valve stem O-ring. Compatible with 1-inch valve sizes and model 919. Used to replace worn rubber parts in backflow preventers for maintaining proper sealing
This repair kit is for Watts backflow preventers, compatible with the 009M2 model and RK-009 series. It includes an upper stem O-ring and is designed for a 2-inch valve size. The kit is used to replace worn internal components, helping to restore proper valve function in water systems
Watts
This repair kit is for Watts backflow preventers, compatible with the 009M2 model and RK-009 series. It includes an upper stem O-ring and is designed for a 2-inch valve size. The kit is used to replace worn internal components, helping to restore proper valve function in water systems

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first