Laser Show Systems - Support Equipment
Basic Water Works
It is desirable to have basic pressure control and filtering of the cooling water fed to laser systems to insure reliable operation. This article describes a basic water works.
The photo above shows a basic water
works. At the top left is a garden hose
fitting where the water enters the system.
Below that, the long brass object, is a water hammer
arrestor. This is a small chamber fitted with
an air bladder that is partially compressed by the
water flow and is designed to minimize shocks from uneven
water pressure caused by solenoid valves or other
spring action valves that 'slam' shut. Note
that the water hammer arrestor must face the input
and potential source of shocks to work properly -
the output flows at right angles to the arrestor
through the T.
The diagram above shows all of the parts required to assemble the basic water works. Note that all of the threaded joints have at least 2 layers of Teflon tape wrapped over the threads before being screwed together in order to eliminate leaks. Special care must be taken screwing the metal parts into the water filter assembly as is is made from plastic and the threads can be torn or the housing may be cracked if the pipes are screwed in too far. When assembling the system, be sure to observe the input and output markings on the filter body so it will function correctly.
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