1. Compatibility: Compatible with 800M4-FR series 1/2 in. and 3/4 in. pressure vacuum breakers. This kit is designed to retro-fit for 800M4-QT to freeze resistant 800M4-FR. Protect the pressure vacuum breaker from freezing conditions, which can cause damage to the system and lead to potential water leakage.

2. Function: Replacing a damaged backflow repair kit also drains water from pipes during the winter months, preventing them from freezing due to cold weather and avoiding pipe ruptures. Continuously protects the water supply from sewage backflow problems by preventing sewage backflow.

3. Good Sealing: The afloat guiding itself up into the bonnet and O- ring, prevents leak out of the backflow assembly and pushes water pressure.

4. Enhance Reliability: The retrofit kit can help improve the reliability of your 800M4 Pressure Vacuum Breaker during cold months, providing peace of mind that your system will continue to function properly despite freezing weather conditions.

5. Material: Made of high quality material with excellent pressure resistance and explosion-proof.O-ring seal effectively prevents leakage or backflow, better sealing effect. It is durable and improves the service life of the pressure vacuum breaker.

Package Includes:

The package includes Vent Float, Vent Spring, Bonnet, Bonnet O-Ring.

1.Orders will be ship out within 1-3 business days after payment has cleared. Orders from Saturdays, Sundays or holidays will process on next business day and will be ship within 24 hours.  

2.All of the items are shipped from our Warehouse in USA.

1. Any defective items received can be replaced or refunded. Please contact us with the item number, eBay ID and defect description within 60 days after the date of package arrived. No Claim will be accept after 60 days.

2. Return shipping fee is the responsibility of buyer unless the return is a result of our mistake. And all NON-seller mistake returns for refund are subject to 20% re-stocking fee.

If you have any questions, please feel free to email our service specialists 24 Hours a Day, and we will reply you ASAP. If no response within 24 Hours, please check the spam of mail box or kindly re-send it to us.

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