680565

Speroni CS Manual

11
Zoom out
Zoom in
Previous page
1/52
Next page
8
9
fig. 1 - Pump installation
The head losses can be read from the diagram shown
in our catalogue, and in order to reduce them to a
minimum - mainly where suction is remarkable (over
4-5 metres) or when operating at the highest flow
rates - it is advisable to use a section pipe larger than
the pump inlet. In all cases it is advisable that the
pump be installed as close as possible to the source
of the pumped liquid.
hpv
is the vapour pressure of the liquid at the operating
temperature, expressed in metres of liquid. hpv is
the quotient between the vapour pressure and the
specific weight of the liquid.
0.5
is a margin of safety.
From the above relation it can be gathered that the
maximum permissible suction lift in an installation
depends on the value of the atmospheric pressure
(i.e. the height above sea level of the installation) and
the liquid temperature. To facilitate the user’s task,
tables are provided which - the datum being water
at 4°C and at sea level - indicate the decrease in the
hydraulic pressure head as a function of the height
above sea level and the suction losses as a function
of the temperature.
Height above
sea level (m)
Suction losses
in m.
500 0,55
1000 1,1
1500 1,65
2000 2,2
2500
3000 3,3
2,75
21,5
Water
temperature (°C)
Suction
loss (m)
20 0,2
40 0,7
60 2,0
80 5,0
90 7,4
110 15,4
120
Wrong
• Reducer and negative inclination
generate air locks
• Scanty immersion=vortex
and whirlpools
• Sharp bends
• Narrow piping
Right
• Eccentric reducer
• Positive inclination
• Good immersion
• Ample bends
• Suction pipe dia.≥ pump inlet
• Check valve at the delivery
B
A
Wrong
• Reducer and negative
inclination
generate air locks
• Scanty immersion=vortex
and whirlpools
• Sharp bends
• Narrow piping
… 11 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Speroni CS at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Speroni CS in the language / languages: English, German, French, Italian, Spanish as an attachment in your email.

The manual is 13,65 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info