(B) 2020/11
7.Technical Specifications
11
7.
Technical Specifications
In the following table, the maximum temperature values must comply with
protection level T4.
Product Temperature range
-20ºC/108ºC
Environment Temperature range
-20ºC/40ºC
Materials
Parts in contact with the product
AISI 316L (1.4404)
Other steel parts
AISI 304L (1.4306)
Gaskets in contact with the product
EPDM (standard)
FPM (other materials available upon request)
Other gaskets
NBR
Exterior surface finish
Matt
Interior surface finish
Polished Ra
≤
0,8
μ
m
Mechanical seal
Type
Internal single, balanced (standard)
Material of rotating part
Silicon carbide (SiC) (standard)
Material stationary part
Graphite (C) (standard)
Silicon carbide (SiC)
Gasket material
EPDM (standard)
FPM
If the single mechanical seal is working in dry conditions, its maximum operating temperature may be
exceeded. This is why a simple mechanical seal must not operate under any circumstances in dry conditions.
-
Regularly check that the single mechanical seal is functioning correctly.
-
Check that the hydraulic part of the pump is always free of liquid during operation.
-
Avoid pumping fluids that contain large amounts of gas.
The client must use a flow meter, flow detector or any other safety device, to
ensure that there is a constant flow to the pump and prevent it from operating in
dry conditions. Another option is to fit a temperature probe in the mechanical seal.
a.
Double mechanical seal option, balanced
. Must
be protected by controlling the washing
liquid.
-
Check the level of supply reserve.
-
Check the temperature of the washing liquid.
-
Check the pressure.
¡Caution! The washing liquid must always be under pressure when the pump is
operating.
-
Check the condition of the washing liquid: Change the washing liquid if it has been
contaminated by another liquid. Contamination of the liquid means that the pump is not
