Frequently Asked Questions

  • Normally, we can get your order shipped by the following day after you've made your order. Then, regular ground shipping (which is included in the price of the product) will take 3 to 5 days (UPS ground).
  • You can speed up shipping by requesting 2nd or next day air. There will be shipping costs added to your order in such a case.
  • Custom orders such a larger sized Rain Maker may take 2 or 3 extra days to prepare.
  • There are too many variables to determine this. The distance the spray rack from the water source, length of hose, whether or not gravity is a factor, the size of the Rain Maker set up ei: how many nozzles are begin utilized - these are all factors that affect the performance of any spray rack.
  • It's best to have access to a water main, or the main water supply of a commercial building. This is the same supply that feeds fire hydrants and runs at a much higher pressure than a conventional water spigot. Even then, a booster pump may be necessary to achieve enough pressure.
A: According the the ASTM standards for spray testing, you must run the spray rack at the same pressure it was ran during its calibration test. The Rain Maker comes with a calibration test result sheet which reveals all conditions the spray rack was under during the calibration test, including pressure, distance of nozzles from test surface and from each other.
A: The Rain Wand is specifically designed to perform the AAMA 501.2 test only on curtain walls or storefront type windows with no operable parts - meaning only a window that cannot be opened and closed. Using the Rain Wand to perform any other test will reveal nothing about the window's performance, and can potentially damage an operable window.
A: Yes. Upon your special request we can provide pascal Magnehelic Meters and/or metric air flow meters. An added day or two may be added to the shipping time, however.
  • There are too many variables involved to be able to calculate an answer to this question. However, the Wind Maker is equipped with a "variable speed auxiliary power outlet". Any additional vacuum blowers plugged into this outlet will vary its speed along with the Wind Maker. Therefore, any air pressure difference can be achieved in any sized air chamber.
  • The Wind Maker has achieved the proper amount of pressure difference in very large chambers without the help of extra vacuum blowers, and alternatively has needed assistance in small air chambers. The tightness of the air chamber is an important factor. It must also be considered that in a spray test setting, air is actually exhausted from part of the wall cavity in addition to the chamber itself. These are some of the variables that make answering this question complicated.