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Design

Seat valve with damping

Line connections

for pipeline installation and block installation

Installation position

Optional

Ambient temperature

–30...+80 °C

Pressure medium

Hydraulic oils based on mineral oil acc. to DIN/ISO,
other, e.g. environmentally-compatible fluids available on request

Viscosity

10...800 mm2/s permissible range 
20...100 mm2/s recommended range
...2000 mm2/s for start permissible range

Pressure medium temperature

–30 °C...+80 °C with NBR sealings, NBR = Perbunan?
–15 °C...+120 °C with FKM sealings, FKM = Viton?

Filtration

Oil contamination Class 19/16 in accordance with ISO/DIS 4406,
or Class 10 in accordance with NAS 1638 to be achieved using filter b25 = 75

Direction of flow rate

shown by symbol or marking

Operating pressure  For line installation

P: max. permissible 350 bar, depending on number of load changes and temperature. Counter values on request.
T: max. permissible 210 bar (NBR) or 80 bar (FKM), depending on number of load  changes and temperature. Counter values on request.

For block installation

P: In accordance with set pressure.
T: NBR max. 210 bar, FM max. 80 bar

MTTFd:

max. 150 years, PRV with set value > 210 bar: B10 value on request

Cracking pressure (tolerance pnom +5 %)   Set at flow 0.1 l/min

Leakage oil flow

Max. 1 cm3/min

Flow

Max. 120 l/min, depending on set pressure and line ?, see chapter “Characteristics”