Messages

1

Pumps, Wells, Tanks, Controls / Duplex Pump System

« on: August 04, 2008, 10:09:47 AM »

Dear Cary,
       It's been a while since we've conversed. Just wanted to send you a picture of a system done by The Water Source for a biscuit factory in Trinidad and Tobago. It consists of two (2) CSV3B2Ts and two (2) Berkeley 7.5Hp water pumps. Your advice was taken and now all our duplex systems don't alternate automatically. One pump will do all the work and we incorporated a pump execiser in the panel to start the stand by unit once a week. The customer will be installing the system today. Once this is done  pictures will be taken of the installation and forwarded to you.

Best Regards
Marcus See Wai

2

Pumps, Wells, Tanks, Controls / Using a CSV on a system supplying fire and Potable water

« on: June 09, 2008, 07:48:34 AM »

Dear All,
        Several of the pump systems we provide for customers provide water for both the potable and fire water system. This is a practice I usually don't like, but due to space and finance the customer has no choice but to go this way. Where the problem comes in is how do I use a csv to control the system. The set up usually requires a higher pressure for the fire and lower pressure for the potable. What advice would you give on how to go about setting up a system like this? Should a pressure reducing valve be used on the potable side, or can another csv be used to control all water heading into the potable system?