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What is the of a vent pipe in a plumbing systeam is to?
I don't quite get what you mean. -A vent pipe in a plumbing system is usually 1 1/2 inch ABS pipe and may extend through the roof, or may end in a AAV under a countertop.
What would happen if you connect large sewer pressure pipe to a small pressure pipe?
Nothing as long as the pressure pipe is not used for potable water as you cannot make a direct connection and depending on the GPM flow what size the larger sewer pipe is as 1 GPM (pumping) is considered 1 fixture unit when sizing the drainage system ALSO make sure the pumps system enters at a right angle 45 deg so your not eroding the side of the larger pipe out
How many kinds of steam?
There are three kinds of steam 1) saturated steam, 2)super saturated steam 3) wet steam.
Why don't the upstairs cast iron radiator heaters work?
Most often because they become air/water-locked. A cast iron radiator system works by sending steam (which naturally rises) up from the lower level into each radiator. When the steam heats the cast iron it loses enough heat so that it cools back to a water (liquid) state. When this happens, the water must flow back to the burner all by itself, propelled ONLY BY GRAVITY. So if at any point in the loop ANY length of pipe has sagged so that it is not downhill enough to allow the water to drain, the system will become locked at that point and no steam will pass by, thus cutting off heat to all radiators beyond the blockage. The most common fix for this is putting shims underneath the feet of the radiator on the opposite side of the pipe only, thus angling the radiator down for full drainage. Many times people will cause the issue themselves by putting a floor or tile underneath the radiator, inadvertently removing the angle. Other times, the natural sagging of the house removes the angle put in when the system was originally installed. So, your best bet is to 1.) Shim all non-working radiators downward toward the pipe, 2.) Drain the whole system (from the spigot at the base of the burner) of all water (and air), and 3.) re-fill the burner with water to the appropriate water pressure. Replacing the steam valves on each non-working radiator is a good idea as well.
What is steam economy in Evaporator?
Steam economy is the ratio between total steam evaporated and steam consumed Se=Steam evaporated/steam flow at start should be above 1 for multi effect systems
