Watts 1 in. Pressure Vacuum Breaker-800M4-QT at The Home Depot


Model # 800M4-QT

Internet # 100023435

Store SKU # 347572

1 in. Pressure Vacuum Breaker

Watts 1 in. Pressure Vacuum Breaker

This item has been discontinued.
The Home Depot no longer carries this specific product.

$99.98 / each


Model # 800M4-QT

Internet # 100023435

Store SKU # 347572

This pressure vacuum breaker prevents the reverse flow of polluted water from entering into the potable water supply due to back siphonage. It consists of bronze body construction, a silicone rubber check valve disc, and a plastic check valve seat. No special tools are required for servicing.

  • Easy to maintain, no special tools required for servicing
  • Test cocks positioned for easy testing and winterization
  • Durable
  • Easy to Install
  • Note: Product may vary by store.

Info & Guides

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Assembled Depth (in.)  10.5 in  Assembled Height (in.)  7.5 in 
Assembled Width (in.)  9.875 in  Compatible Pipe Material  Brass 
Connection  FIP  Insulated  No 
Manufacturer Warranty  Watts (the "Company") warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment.  Material  Metal 
Maximum Pressure (psi)  150.0  Maximum Working Temperature (F)  140.0 
Minimum working temperature (F)  33.0  Product Height (in.)  4.5 
Product Length (in.)  8.3 in  Product Weight (lb.)  6 lb 
Product Width (in.)  9.2 in  Rating  Water 
Returnable  90-Day  Size (in.) 
Valve Inlet Diameter (in.)  1.0  Valve Outlet Diameter (in.)  1.0 
Valve Product Type  Pressure Regulating  Valve type  Other 


Rated 3.1 out of 5 by 8 reviewers.
Rated 3 out of 5 by Water valve pressure breaker I had to replace one that went bad with the same model. Due to the spacing of the pipes it was important to get the same valve if I did not want to create a lot of extra work. The old valve quit working after 3 years. An attempt to conduct maintenance on the old valve was futile. October 14, 2014
Rated 5 out of 5 by Great product by Watts This product really helped me out of a code issue bind. August 22, 2014
Rated 1 out of 5 by Cap only lasted 1 year I bought this valve to replace my 10 year old plastic one. Thinking it was metal it would last longer. Wrong, I removed and stored it inside for the winter when I reinstalled it the plastic cap was cracked and sprays water everywhere. I expected it to last more than a year, and repair parts are not available at the local store. April 8, 2012
Rated 1 out of 5 by Different Brand in Stores Drove to two Home Depot stores today trying to buy this product. The product in the stores was by "Wilkins", not "Watts" even though the SKU matched. I found the same Wilkins model $40 less online elsewhere while the Watts version is priced similar to this. I'd be hesitant to order this online as you might get the cheaper brand model. June 2, 2014
Rated 1 out of 5 by Not a winter valve This valve has a great feature for back flow prevention. Has two drains for winter to prevent freeze breaks. I recommend this product if you live in an area where the temperature never drops below freezing. Otherwise you will probably have to replace it. January 26, 2013
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