Hydrostatic loop

A hydrostatic loop, though not often used in plumbing practice, is an arrangement of pipes formed into a vertical loop to prevent backflow of water within the plumbing potable water system. Since a siphon has a maximum height that it can work (about 33 feet), a hydrostatic loop is built higher than 33 feet. There are several ways to prevent siphonage and an undesirable backflow of the water in a plumbing system.

• Vented loops

See also

• backflow prevention
• Pressure vacuum breaker
• Double check valve
• Chemigation valve
• Reduced pressure zone device
• Atmospheric vacuum breaker