The Vacuum Breaker is used with solar pool heater collectors to break the vacuum, by letting air into the system, and allow the solar panels to drain when the pump is turned off.
1-1/2" Nominal; 1-7/8 Actual O.D. [fits inside the 1-1/2 Rubber
2" Nominal; 2-3/8 Actual O.D. [fits inside the 2" Rubber Coupling]
Product Warranty: 1 Year Manufacturer Warranty
Insert the vacuum breaker in place of the upper end cap, tighten with hose clamp. For proper drainage to occur, the feed line must run downhill to the 3-way valve. The 3-way valve must be open or non-positive seal. A positive seal may be converted by removing the seal from the diverter or drilling a 3/16 hole in the center of the diverter inside the 3-way valve. You may also leave the positive seal 3-way valve open slightly to achieve the same results.
A typical solar panel roof kit should look like the diagram below when finished. It may vary based on the actual layout.
When needing to isolate the solar, and still run the pump, an isolation ball valve will need to be installed on the solar feed line to the solar to achieve total shutdown capabilities.
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When purchased with a Solar Pool Heater System Kit.
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