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Watts 800M4-1/2-3/4 1st Check Kit - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts 800M4-1/2-3/4 1st Check Kit

The Watts 800M4-1/2-3/4 1st Check Kit is a pressure vacuum breaker check repair kit designed for Watts backflow preventers. It includes a bonnet O-ring and is compatible with valve sizes of 1/2 in to 3/4 in and the…

SKU 3G-OTH-436692

Also listed as: 800M412341stCheckKit · 800M4 1 2 3 4 1st Check Kit · 800M4-1-2-3-4-1st-Check-Kit

Brand
Watts
Item
800M4-1/2-3/4 1st Check Kit
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
800M4-1/2-3/4 1st Check Kit
Type
1/2 - 3/4 800M4, Repair Kit
Includes
Bonnet O-Ring
Compatible Valve Size
1/2 in to 3/4 in
Compatible with Series
800M4
Compatible with Mfr. Model No.
1/2 - 3/4 800M4

Technical Documents

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

Product Description

The Watts 800M4-1/2-3/4 1st Check Kit is a pressure vacuum breaker check repair kit designed for Watts backflow preventers. It includes a bonnet O-ring and is compatible with valve sizes of 1/2 in to 3/4 in and the Series 800M4. This kit is intended for use with the 1/2 - 3/4 800M4 model.

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 800M4-1/2-3/4 1st Check Kit used for?

This repair kit is used to service the first check valve in Watts 800M4 series pressure vacuum breakers. It includes a bonnet O-ring and is compatible with valve sizes 1/2 in to 3/4 in. It helps maintain backflow prevention in commercial and industrial water systems.

What are the specifications of the Watts 800M4-1/2-3/4 1st Check Kit?

The kit is a repair kit for Watts 800M4 series pressure vacuum breakers. It includes a bonnet O-ring, is compatible with valve sizes 1/2 in to 3/4 in, and fits the 1/2 - 3/4 800M4 model. The manufacturer part number is 800M4-1/2-3/4 1st Check Kit.

Where to buy the Watts 800M4-1/2-3/4 1st Check Kit worldwide?

3G Electric supplies the Watts 800M4-1/2-3/4 1st Check Kit worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this repair kit to your facility. Contact us for availability and lead time.

How to install the Watts 800M4-1/2-3/4 1st Check Kit?

Installation requires depressurizing the system and removing the first check valve assembly. Replace the old components with the new bonnet O-ring and check assembly from the kit. Reassemble and test for proper sealing. Always follow Watts' instructions for safe backflow prevention maintenance.

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
Repair kit for Watts 800M3 series backflow preventers. Includes bonnet O-ring. Compatible with valve sizes 1/2 in to 3/4 in. Used to replace worn internal components and restore sealing in potable water systems
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Repair kit for Watts 800M3 series backflow preventers. Includes bonnet O-ring. Compatible with valve sizes 1/2 in to 3/4 in. Used to replace worn internal components and restore sealing in potable water systems
Repair kit for servicing the first check valve of Watts 800M2 series backflow preventers. Compatible with valve sizes from 1/2 in to 1 in. Includes bonnet O-ring. Used in backflow prevention systems for water lines
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Repair kit for servicing the first check valve of Watts 800M2 series backflow preventers. Compatible with valve sizes from 1/2 in to 1 in. Includes bonnet O-ring. Used in backflow prevention systems for water lines
This repair kit is designed for servicing Watts 800M4 series backflow preventers with a 1-inch valve size. It includes a check spring to replace worn components, helping maintain proper backflow protection in water systems. Compatible with model 1 800M4
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This repair kit is designed for servicing Watts 800M4 series backflow preventers with a 1-inch valve size. It includes a check spring to replace worn components, helping maintain proper backflow protection in water systems. Compatible with model 1 800M4
This repair kit is for servicing Watts Series 800 backflow preventers. It includes a check disc assembly (disc and holder) and is compatible with valve sizes from 1/2 in to 1 in. Used to restore check-valve function in vacuum breakers, maintaining backflow protection in plumbing systems
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This repair kit is for servicing Watts Series 800 backflow preventers. It includes a check disc assembly (disc and holder) and is compatible with valve sizes from 1/2 in to 1 in. Used to restore check-valve function in vacuum breakers, maintaining backflow protection in plumbing systems
This repair kit is designed for Watts Series 800M4 pressure vacuum breaker backflow preventers in 1/2 to 3/4 inch sizes. It includes a float vent disc assembly with a vent float seal and spring, used to restore proper venting function in backflow prevention systems
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This repair kit is designed for Watts Series 800M4 pressure vacuum breaker backflow preventers in 1/2 to 3/4 inch sizes. It includes a float vent disc assembly with a vent float seal and spring, used to restore proper venting function in backflow prevention systems
Repair kit for Watts 800M4 series pressure vacuum breakers. Includes bonnet O-ring. Compatible with 1 in valve size and model 1 800M4. Used to replace worn rubber parts in backflow prevention assemblies
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Repair kit for Watts 800M4 series pressure vacuum breakers. Includes bonnet O-ring. Compatible with 1 in valve size and model 1 800M4. Used to replace worn rubber parts 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
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