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Watts 800M4-1/2-3/4 Vent Kit for Pressure Vacuum Breaker Backflow Preventers - Repair Kits & Parts for Watts Backflow Preventers
WattsRepair Kits & Parts for Watts Backflow Preventers

Watts 800M4-1/2-3/4 Vent Kit for Pressure Vacuum Breaker Backflow Preventers

The Watts 800M4-1/2-3/4 Vent Kit is a pressure vacuum breaker vent kit repair part for Watts backflow preventers. It is compatible with the Series 800M4 and valve sizes 1/2 in to 3/4 in. The kit includes a float vent…

SKU 3G-OTH-436694

Also listed as: 800M41234VentKit · 800M4 1 2 3 4 Vent Kit · 800M4-1-2-3-4-Vent-Kit

Brand
Watts
Item
800M4-1/2-3/4 Vent Kit for Pressure Vacuum Breaker Backflow Preventers
Part Number
800M4-1/2-3/4 Vent Kit
Category
Repair Kits & Parts for Watts Backflow Preventers
Available to Order
Also known as:800M4-1/2-3/4 Vent KitWatts
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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
800M4-1/2-3/4 Vent Kit
Type
1/2 - 3/4 800M4, Repair Kit
Includes
Float Vent Disc Assembly (Vent Float Seal and Spring)
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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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Watts 800M4-1/2-3/4 Vent Kit is a pressure vacuum breaker vent kit repair part for Watts backflow preventers. It is compatible with the Series 800M4 and valve sizes 1/2 in to 3/4 in. The kit includes a float vent disc assembly comprising a vent float seal and spring.

Frequently Asked Questions

What is the Watts 800M4-1/2-3/4 Vent Kit used for?

The Watts 800M4-1/2-3/4 Vent Kit is a repair part for Watts pressure vacuum breaker backflow preventers. It replaces the vent assembly in Series 800M4 units sized 1/2 in to 3/4 in, restoring proper venting function to prevent backflow contamination in commercial and residential water systems.

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

The Watts 800M4-1/2-3/4 Vent Kit includes a float vent disc assembly with a vent float seal and spring. It is compatible with valve sizes 1/2 in to 3/4 in and the Series 800M4. The manufacturer part number is 800M4-1/2-3/4 Vent Kit, and it is compatible with Part No. 800M4-FR.

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

3G Electric supplies the Watts 800M4-1/2-3/4 Vent Kit 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; we source and deliver this genuine Watts repair kit to any country.

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

To install the Watts 800M4-1/2-3/4 Vent Kit, first depressurize and drain the backflow preventer. Remove the old vent assembly from the Series 800M4 unit, then insert the new float vent disc assembly (vent float seal and spring) into the vent port. Reassemble and test for proper operation per local plumbing codes.

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
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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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