Model # 800M4-QT

Internet #100201103

Store SKU #119487

null 3/4 in. Bronze Pressure Vacuum Breaker

3/4 in. Bronze Pressure Vacuum Breaker

$6765 /each
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Frequently Bought Together

Product Overview

The 3/4 in. 800M4 pressure vacuum breaker prevents the reverse flow of polluted water from entering into the potable water supply due to back siphon-age. It consists of bronze body construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, a bonnet with silicone rubber O-ring seal, a lightweight plastic disc float, tee handle or lever handle shutoffs, and test cocks for winterization draining. It is ideal in continuous pressure health hazard applications such as on irrigation systems and industrial process water systems.

California residents: see   Proposition 65 information

  • Easy to maintain - no special tools required for servicing
  • Test cocks positioned for easy testing and winterization
  • Maximum pressure 150 psi (10.3 bar)
  • Minimum pressure 15 psi (55 kPa)

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

I have a pressure vacuum valve on my sprinkler system. Is this valve necessary? Can i just put a shut off valve. My existing valve q-600 is cracked.

Need to replace with some sort of valve.
Asked by: ALPHADOG
You can replace either of the two ball valves with out affecting the operation of the PVB.
Answered by: Joe
Date published: 2016-02-06

Are spare parts availble for this assembly at Home Depot?

The bonnet assembly is broken. I just bought the house and the new pressure vacuum breaker has a broken bonnet assembly so water shoots through the cap when I turn on my sprinkler system.
Asked by: RSummit
You do not have to buy the whole assembly....cap is available separately for short money.
Answered by: rich
Date published: 2015-09-20

Are these Pressure Vacuum Breaker Valves lead free?

Asked by: Octarine75
Hi, No, this product is not lead free. Please let us know if you have any other questions or concerns. Thank you.
Answered by: WattsWater
Date published: 2015-09-20

What kind of fitting do I need to put on those nipples to blow out my water lines

Asked by: Crawl
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Customer Reviews

3/4 in. Bronze Pressure Vacuum Breaker is rated 4.7 out of 5 by 6.
Rated 5 out of 5 by from Breaker was the exact same item being replaced. Breaker was the exact same item being replaced.
Date published: 2017-07-11
Rated 4 out of 5 by from installation easy,start up confusing It took a call to the "Watts" company to help getting it to work on the first time after installation. I got it to work and it works as it should. The instructions to get it to work the first time are bad. The company assumes your a plumber and not a home owner handyman. I bought a second one for my other sprinkler system. I used PVC and it passed my towns inspection. I needed an "O" ring that was omitted in shipping or I lost it. I called for a replacement 2 weeks ago and haven't received it yet. I bought one locally. The valves were confusing...what was open and what was closed ? I figured it out.
Date published: 2015-06-02
Rated 5 out of 5 by from Replacement for like item I bought this breaker to replace one I installed about 15 years ago. To my surprise you could not tell them apart. No design changes, so it must be the best. I had to replace the old one because I dewinterized too early and another freeze got it.
Date published: 2015-04-14
Rated 4 out of 5 by from Works as advertised Bought as a replacement for one which recently bursted in the casing due to a 24 degree freeze. It is interesting that although the brass casing bursted, the PVC pipes connected to it on both sides did not. At least we now know how to prepare it for freezing weather.
Date published: 2014-03-25
Rated 5 out of 5 by from It was a great price I looked at other places but this was the best price. I had to take it apart because I wanted to go in the other direction. All I had to do was switch the valves and place them in the other direction.
Date published: 2014-05-20
Rated 5 out of 5 by from Solid valve The 3/4" assembly is well constructed and relatively lightweight compared to the 1" version.
Date published: 2013-07-17
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