Check valve, pilot operated Type SV and SL

  • Size 6
  • Component series 6X
  • Maximum operating pressure 315 bar
  • Maximum flow 60 l/min
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Installation positionany
Ambient temperature rangeNBR seals°C-30 … +80
FKM seals°C-20 … +80
MTTFD values according to EN ISO 13849Years150 1)
1)For further details, see data sheet 08012


Maximum operating pressurebar315
Cracking pressurebar1.5 / 3 / 6 / 10
Maximum flowl/min60
Direction of flowsee symbols
Hydraulic fluidsee table
Minimum pilot pressurebar5
Maximum pilot pressurebar315
Hydraulic fluid temperature range (NBR seals)°C-30 … +80
Hydraulic fluid temperature range (FKM seals)°C-20 … +80
Viscosity rangemm²/s2.8 … 500
Maximum admissible degree of contamination of the hydraulic fluid 1)Class 20/18/15 according to ISO 4406 (c)
Pilot volumePort Xcm³0.68
Area ratioWithout pre-openingA1/A2 ~ 1/3; A4/A2 ~ 1/7 (see sectional drawing)
With pre-openingA3/A2 ~ 1/13 (see sectional drawing)
1)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
Hydraulic fluidClassificationSuitable sealing materialsStandards
Mineral oils and related hydrocarbonsHL, HLP, HVLPNBR, FKMDIN 51524
Environmentally compatibleInsoluble in waterHEESNBR, FKMISO 15380
Soluble in waterHEPGFKMISO 15380
Flame-resistantWater-freeHFDU, HFDRFKMISO 12922
Containing waterHFCNBRISO 12922
Important information on hydraulic fluids!

  • For further information and data on the use of other hydraulic fluids please contact us!
  • There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)!