Search results
Results from the WOW.Com Content Network
In the U.S., every plumbing fixture must also be coupled to the system's vent piping. [1] Without a vent, negative pressure can slow the flow of water leaving the system, resulting in clogs, or cause siphonage to empty a trap. The high point of the vent system (the top of its "soil stack") must be open to the exterior at atmospheric pressure.
Using the efficiency standards established by EPACT92 as a baseline, the EPA instituted the following flow-rate guidelines for WaterSense: toilets must be manufactured with a maximum flush volume of 1.28 gpf; showerheads must have a maximum flow-rate of 2.0 gpm at 80 psi; and bathroom faucets must be manufactured with a low-flow volume rate of ...
Since June 2011, it is followed by VinylPlus, a new set of targets for sustainable development. [70] Its main target is to recycle 800,000 tonnes per year of PVC by 2020 including 100,000 tonnes of "difficult to recycle" waste. One facilitator for collection and recycling of PVC waste is Recovinyl. [71]
The difference between pipes and tubes is a matter of sizing. For instance, PVC pipe for plumbing applications and galvanized steel pipe are measured in iron pipe size (IPS). Copper tube, CPVC, PeX and other tubing is measured nominally, basically an average diameter. These sizing schemes allow for universal adaptation of transitional fittings.
Aerosol droplets produced by flushing the toilet can mix with the air of the room, [8] larger droplets will settle on surfaces or objects creating fomites (infectious pools) before they can dry, like on a counter top or toothbrush; [7] [10] and can contaminate surfaces such as the toilet seat and handle for hours, which can then be contacted by hands of the next user of that toilet. [3]
An air flow meter is a device similar to an anemometer that measures air flow, i.e. how much air is flowing through a tube. It does not measure the volume of the air passing through the tube, it measures the mass of air flowing through the device per unit time, though Thus air flow meters are simply an application of mass flow meters for the ...
An air gap, as related to the plumbing trade, is the unobstructed vertical space between the water outlet and the flood level of a fixture. [1] Air gaps of appropriate design are legally required by water health and safety regulations in many countries. An air gap is the simplest form of a backflow prevention device.
The number system, like Sch 40, 80, 160, were set long ago and seem a little odd. For example, Sch 20 pipe is even thinner than Sch 40, but same OD. And while these pipes are based on old steel pipe sizes, there is other pipe, like cpvc for heated water, that uses pipe sizes, inside and out, based on old copper pipe size standards instead of steel.