Install Instructions
Function: To protect the potable water supply from backflow
from a non-potable source due to a drop in supply.
Protection: Pressure i.e. backsiphonage
Installation
Requirements:
1. Install 12" (305mm) above highest point of downstream piping.
2. Install bonnet side up and allow for accessibility for testing/service.
3. Install where discharge or spillage is not objectionable.
4. Do not undersize supply or oversize the valve in relation to demand.
5. Do not install where backpressure can occur.
6. Protect from freezing - for Freeze Protection specify
No. 800M4-FR
1
⁄2" - 2" (15 - 50mm) . Freeze protection can
also be provided using a WattsBox insulated enclosure. Send
for ES-WB for additional information.
7. ASSE Standard 1020 requires that the atmospheric vent valve remains
open until the valve body pressure exceeds 1 lb. Until this pressure is
reached, some amount of spillage will occur at the atmospheric vent.
In order to minimize this leakage on start-up close the down stream
shutoff valve and open inlet shutoff valve quickly
Recommended Service:
1. Test periodically as required by local jurisdictional authorities.
2. Open test cocks to drain in cold climates if only operated seasonally.
3. Replace rubber goods every 5 years.
Watts 800M4QT
1
⁄2",
3
⁄4"
(15, 20mm)
WattsBox
Watts 800M4QT
1" - 2" (25 - 50mm)
Limited Warranty: Watts Regulator Co. (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. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.
THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER WARRANTIES,
EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special
or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from
labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control.
This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.
Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above
limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to
determine your rights. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.
RP/IS-800M4QT
Series 800M4
Anti-Siphon Pressure Vacuum Breaker
featuring Replaceable Seats
Sizes:
1
/2" - 2" (15 - 50mm)
Pressure — Temperature
Working Temperature: 33°F - 140°F (.56°C - 60°C)
Maximum Pressure: 150psi (10.3 bar)
Min. Pressure: 15psi (103 kPa)