Check valve, pilot operated Type Z2S

Rexroth
  • Size 6
  • Component series 6X
  • Maximum operating pressure 315 bar
  • Maximum flow 60 l/min
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general

Size 6
Weight kg 0.8
Installation position any
Ambient temperature range NBR seals °C -30 … +80
FKM seals °C -20 … +80

hydraulic

Size 6
Maximum operating pressure bar 315
Cracking pressure 1) bar 1.5 / 3 / 6
Maximum flow l/min 60
Direction of flow see symbols
Hydraulic fluid see table
Hydraulic fluid temperature range (NBR seals) °C -30 … +80
Hydraulic fluid temperature range (FKM seals) °C -20 … +80
Viscosity range mm²/s 2.8 … 500
Maximum admissible degree of contamination of the hydraulic fluid 2) Class 20/18/15 according to ISO 4406 (c)
Area ratio Without pre-opening A1/A2 ~ 1/3.5 (see sectional drawing)
With pre-opening A3/A2 ~ 1/12.5 (see sectional drawing)
Version “SO60” A1/A4 ~ 1/7 (see sectional drawing)
1) in free direction
2) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

Selection of optimal sealing material also depends on the type of hydraulic fluid used.

Hydraulic fluid Classification Suitable sealing materials Standards
Mineral oils HL, HLP, HLPD NBR, FKM DIN 51524
Bio-degradable Insoluble in water HETG NBR, FKM VDMA 24568
HEES FKM
Soluble in water HEPG FKM VDMA 24568
Flame-resistant Water-free HFDU, HFDR FKM ISO 12922
Containing water HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) NBR ISO 12922

Important information on hydraulic fluids!

  • For further information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us!
  • There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)!
  • The flash point of the hydraulic fluid used must be 40 K higher than the maximum solenoid surface temperature.

Flame-resistant – containing water:

Maximum operating pressure 210 bar

Maximum hydraulic fluid temperature 60 °C

Life cycle compared to operation with mineral oil HL, HLP 30 to 100  %
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