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Watts Backflow Preventer Repair Kits: First or Second Check Kit, 36JC57/36JC63 - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts Backflow Preventer Repair Kits: First or Second Check Kit, 36JC57/36JC63

The WATTS Backflow Preventer Repair Kits: First or Second Check Kit is a repair kit for Watts backflow preventers, compatible with the 8 in valve size and Series RK-LF709. It includes a Cover O-Ring and is designed…

SKU 3G-OTH-436789

Also listed as: LFRK709CK48 · LFRK 709 CK4 8 · LFRK-709-CK4-8

Brand
Watts
Item
Backflow Preventer Repair Kits: First or Second Check Kit, 36JC57/36JC63
Category
Repair Kits & Parts for Watts Backflow Preventers
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Watts
Manufacturer Part Number
LFRK 709-CK4 8
Type
36JC57/36JC63, 709/LF709, RK-LF709
Includes
Cover O-Ring
Compatible Valve Size
8 in
Compatible with Series
RK-LF709
Compatible with Mfr. Model No.
709

Technical Documents

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

Product Description

The WATTS Backflow Preventer Repair Kits: First or Second Check Kit is a repair kit for Watts backflow preventers, compatible with the 8 in valve size and Series RK-LF709. It includes a Cover O-Ring and is designed for use with the 709 model (MPN LFRK 709-CK4 8).

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Watts backflow preventer repair kit used for?

The Watts backflow preventer repair kit is used to replace the first or second check assembly in Watts 709 and LF709 series backflow preventers. It is designed for 8-inch valves and includes a cover O-ring to restore proper sealing and prevent backflow in commercial and industrial water systems.

What are the specifications of the Watts backflow preventer repair kit?

This repair kit, MPN LFRK 709-CK4 8, is compatible with 8-inch valve size and Watts Series RK-LF709. It includes a cover O-ring and is designed for use with the Watts 709 model. The kit is identified by Part No. 36JC57 and is a first or second check replacement kit.

Where to buy Watts backflow preventer repair kits worldwide?

3G Electric supplies Watts backflow preventer repair kits worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the LFRK 709-CK4 8 kit for your 8-inch Watts 709 backflow preventer.

How to install a Watts backflow preventer repair kit?

To install the Watts repair kit, first isolate the valve and relieve pressure. Remove the cover, replace the old check assembly with the new kit components, and install the included cover O-ring. Reassemble and test for leaks per local plumbing codes. Always follow Watts' generic installation guidelines for backflow 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC55/36JC61, 709/LF709, RK-LF709 (MPN LFRK 709-CK4 4)
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WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC55/36JC61, 709/LF709, RK-LF709 (MPN LFRK 709-CK4 4)
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC58/36JC64, 709/LF709, RK-LF709 (MPN LFRK 709-CK4 10)
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WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC58/36JC64, 709/LF709, RK-LF709 (MPN LFRK 709-CK4 10)
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC56/36JC62, 709/LF709, RK-LF709 (MPN LFRK 709-CK4 6)
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WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC56/36JC62, 709/LF709, RK-LF709 (MPN LFRK 709-CK4 6)
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC53/36JC54/36JC59/36JC60 (MPN LFRK 709-CK4 2-1/2-3)
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WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC53/36JC54/36JC59/36JC60 (MPN LFRK 709-CK4 2-1/2-3)
WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC66, 719/LF719, RK-LF719 (MPN RK 719-CK4-3/4)
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WATTS Backflow Preventer Repair Kits: First or Second Check Kit, 36JC66, 719/LF719, RK-LF719 (MPN RK 719-CK4-3/4)
WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC55/36JC61, 709/LF709, 709 (MPN RK 709-RT 4)
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WATTS Backflow Preventer Repair Kits: Complete Rubber Parts Kit, 36JC55/36JC61, 709/LF709, 709 (MPN RK 709-RT 4)

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