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Watts Backflow Preventer Repair Kit: Relief Valve Kit - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Backflow Preventer Repair Kit: Relief Valve Kit

The WATTS Backflow Preventer Repair Kit: Relief Valve Kit (SKU 3G-OTH-436702) is a repair kit for Watts backflow preventers, compatible with Series 909 and Mfr. Model No. 21/2 909 NRS. It includes a diaphragm and…

SKU 3G-OTH-436702

Also listed as: RK909RT2123 · RK909RT21 2 3 · RK909RT21-2-3

Brand
Watts
Item
Backflow Preventer Repair Kit: Relief Valve 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
RK909RT21/2-3
Type
793PG1/793PG2/793PG3/793PG5, Repair Kit, 909
Includes
Diaphragm
Compatible Valve Size
2-1/2 in to 3 in
Compatible with Series
909
Compatible with Mfr. Model No.
21/2 909 NRS

Technical Documents

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

Product Description

The WATTS Backflow Preventer Repair Kit: Relief Valve Kit (SKU 3G-OTH-436702) is a repair kit for Watts backflow preventers, compatible with Series 909 and Mfr. Model No. 21/2 909 NRS. It includes a diaphragm and fits valve sizes 2-1/2 in to 3 in, with manufacturer part number RK909RT21/2-3.

Frequently Asked Questions

What is the Watts backflow preventer repair kit used for?

This repair kit is used to service Watts Series 909 backflow preventers, specifically the relief valve assembly. It is essential for maintaining backflow prevention in commercial and industrial water systems, ensuring compliance with cross-connection control regulations.

What are the specifications of the Watts RK909RT21/2-3 repair kit?

The Watts RK909RT21/2-3 repair kit includes a diaphragm and is compatible with valve sizes 2-1/2 in to 3 in. It fits Watts Series 909 backflow preventers and model 21/2 909 NRS. The manufacturer part number is RK909RT21/2-3.

Where to buy Watts backflow preventer repair kits worldwide?

3G Electric supplies Watts backflow preventer repair kits worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the RK909RT21/2-3 kit.

How to install the Watts relief valve repair kit?

To install, first depressurize the system and remove the relief valve cover. Replace the old diaphragm with the new one from the kit, ensuring proper alignment. Reassemble the valve and test for leaks. Always follow Watts' installation instructions for Series 909 preventers.

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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