Re: Selection of Merchanical Diaphragm Pump

Hi Varun

could you please give an indication of the duty? Mechanical diaphragm pumps range from metering pumps to (old) car fuel pumps to large concrete and slurry pumps. Each has its own modus operandi.

Cheers

Steve
----- Original Message -----
From: "varun pant" <varun_pant@intersolutions.stpn.soft.net> To: <PipingDesign@yahoogroups.com> Sent: Tuesday, February 19, 2002 7:42 AM Subject: [PipingDesign] Selection of Merchanical Diaphragm Pump

> Dear Friends,
> What is the modus operandi for selection of a particular model in a range
of
> Mechanical Diaphragm Pump as offered by a Pump vendor?
> For e.g., the obvious choices can be-
> 1 Capacity and Back Pressure (where you have the capacity and Maximum
> discharge pressure guidelines.)
> 2 Drive Type ( Pulley or Direct)
> 3 Motor (HP, Voltage, Motor Enclosure etc)
> 4 Valve material
> 5 Head and Connections
> 6 Stroke Control mode
> Etc. etc.. etc..
>
> As I am not from a piping background, please also let me know the basic
> difference between Cartridge and Threaded valves and their application.
> Why does Cartridge valve cost less as compared to Threaded valve?
> Looking forward to your reply. Any help, including a link where I can get
> the information will be highly appreciated.
> Thanks in anticipation,
> Regards,
>
> Varun Pant
> Senior Member Technical Staff
>
>
>
>
>
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Received on Mon Feb 18 04:06:00 2002