enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Double-walled pipe - Wikipedia

   en.wikipedia.org/wiki/Double-walled_pipe

   Double wall pipes are usually hydrostatically tested, or tested to hold and maintain a target gas pressure before the first use. A different special application of a double-walled pipe is a jacketed pipe, which is used to make high viscosity liquids flow at elevated temperature through the carrier pipe. The outer pipe circulates hot fluids that ...

3. Chimney - Wikipedia

   en.wikipedia.org/wiki/Chimney

   Class A are either an insulated, double wall stainless steel pipe or triple wall, air-insulated pipe often known by its genericized trade name Metalbestos. Class B are uninsulated double wall pipes often called B-vent, and are only used to vent non-condensing gas appliances. These may have an aluminum inside layer and galvanized steel outside ...

4. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   Older structures may use asbestos, copper, iron, lead or clay pipes, in rough order of era of use. Under many older building codes, a vent stack (a pipe leading to the main roof vent) is required to be within approx. a 5-foot (1.5 m) radius of the draining fixture it serves (sink, toilet, shower stall, etc.). [2]

5. Trap (plumbing) - Wikipedia

   en.wikipedia.org/wiki/Trap_(plumbing)

   In the United States, plumbing codes usually provide strict limitations on how far a trap may be located from the nearest vent stack. When a vent cannot be provided, an air admittance valve may be used instead. These devices avoid negative pressure in the drain pipe by venting room air into the drain pipe (behind the trap).

6. Duct (flow) - Wikipedia

   en.wikipedia.org/wiki/Duct_(flow)

   When necessary, a double walled duct is used. This will usually have an inner perforated liner, then a 1–2" (2.5-5 cm) layer of fiberglass insulation contained inside an outer solid pipe. Rectangular ductwork commonly is fabricated to suit by specialized metal shops. For ease of handling, it most often comes in 4' (120 cm) sections (or joints).

7. Cast iron pipe - Wikipedia

   en.wikipedia.org/wiki/Cast_iron_pipe

   Cast iron pipe formed using this procedure was typically oven-cooled under controlled time and temperature conditions. As with metal molds, pipe was typically annealed to eliminate any stresses in the pipe, and were then cleaned, inspected, tested, gauged (for dimensions), coated internally and/or externally, and stored for use. [5]