Solar well control [RE-wrenches]

[William Miller]

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Friends:

By popular demand, I am easing into a new line of solar electric:  DC water 
pumping.  Realizing I have little training in the fluid and mechanical side 
of this operation, I have been doing a lot of research.  If anyone can 
recommend any texts or web sites, that would be appreciated.

I have a particular question and would most appreciate any input:  I have a 
new client with a Sun Pump direct solar well pump.  It runs well but he 
wants to automate his pump operation.  The tank is 1/4 mile away from the 
well with no extra conduit for a float switch.  There is little elevation 
gain between the well and the tank.  I understand we can install a ball 
cock valve at the tank and use a pressure switch at the well to shut the 
well off.  However, a standard ball cock is problematic in that the valve 
shuts gradually.  This could cause rapid pump cycling. However, a Clay or 
JOBE reservoir valve would shut completely and resolve this cycling issue.

Is the information in the paragraph above correct?  Any flaw in the logic?

Thanks in advance.

William Miller



-- _________________________________
William Miller
Miller Power and Communications
Voice :805-438-5600     Fax: 805-438-4607
email: wrmiller at mpandc.com
http://mpandc.com
License No. C-10-773985


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