siphonage

Back siphonage may be prevented by use of an air gap.

Back siphonage is not to be confused with backflow.

Back siphonage can flow through an intermediate high-point and is thus much more difficult to guard against.

Back siphonage is the result of supply pressure being lowered below that of the system.

One of the lumens was used to drain the gastric contents by siphonage.

Building codes often contain specific sections on back siphonage and especially for external faucets.

Backflow occurs for one of two reasons, either back pressure or back siphonage.

There are several ways to prevent siphonage and an undesirable backflow of the water in a plumbing system.

Back siphonage is a plumbing term applied to clean water pipes that connect directly into a reservoir without an air gap.

Each of the 4 air supplies would need to be protected by a non-return valve to prevent siphonage in the event of power failure.

Generally, a toilet outlet has the shortest trap seal, making it most vulnerable to being emptied by induced siphonage.

This arrangement will prevent any contaminants in the sink from flowing into the potable water system by siphonage and is the least expensive form of backflow prevention.

The double check valve assembly is suitable for prevention of back pressure and back siphonage, but is not suitable for high hazard applications.

This makes it very difficult for the mains to be contaminated by dirty water (from a bath, say) being sucked back up the mains - a phenomenon known as back siphonage.

One way of preventing siphonage is to fit a vent pipe - a separate pipe, connected after the trap, leading to the stack - or to have an anti-siphon valve connected into the wastepipe (see drawing).

He was the first to use spinal anesthesia in the United States in 1889, the developer of the intravenous drip technique, of suction, of siphonage in abdominal operations, and the first to surgically repair aneurysms.

The valve, which must be fitted vertically, comes in two sizes and the internal diaphragm will prevent loss of water from the trap seal by self-siphonage (from the pipe running full) or induced siphonage (from other pipes running full and creating a vacuum)