Grundfos PLV Series, Installation And Operating Instructions Manual

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English (GB)
3
2. General information
2.1 Applications
The pressure loading valve keeps the pump's counterpressure
constant. The valve opens, if the pressure exceeds the opening
pressure adjusted at the valve.
The valve is suitable to maintain the required counterpressure of
the pump in case of:
– insufficient counterpressure in the system
– open discharge.
2.2 Improper operating methods
The operational safety of the product is only guaranteed if it is
used in accordance with section
2.1 Applications
.
The product must not be used for:
• operation in potentially explosive areas
• combustible media
• frozen media or gases
• abrasive or crystallising media.
2.3 Warranty
A guarantee claim in accordance with our general terms of sale
and delivery is only valid if the following requirements are fulfilled:
• The product is used in accordance with the information within
this manual.
• The product is not dismantled or handled incorrectly.
• The maintenance is carried out by authorised and qualified
personnel.
• Only original spare parts are used for repairs during
maintenance.
3. Technical data
3.1 Storage and ambient temperatures
3.2 Permissible media temperature
Warning
Other applications or the operation in ambient
and operating conditions, which are not
approved, are considered improper and are not
permitted! Grundfos cannot be held liable for any
damage resulting from incorrect use!
Caution
Pressure loading valves are not isolating valves.
They are never completely tight when closed.
Operating pressure
< 10 bar 10-16 bar
Min./Max. ambient
temperature [°C]
0/+40 0/+20
Min./Max. storage
temperature [°C]
-10/+50
Material
Operating pressure
< 10 bar 10-16 bar
PVC, PP 0 °C to +40 °C 0 °C to +20 °C
PVDF, SS -10 °C to +40 °C -10 °C to +20 °C