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Danfoss

Check valves

Where to buy

Robust design for efficient and compact load holding

Explore our extensive check valve collection, featuring cartridge-style options (both standard and reverse direction). Our check valves and pilot-operated check valves aren't just compact and economical – they deliver optimal load holding performance. With numerous sizes and schematic options, we tailor our valves to meet your specific flow and pressure application needs. Rest easy with our robust, low-leakage designs, ensuring you can confidently apply them to your machine with unmatched reliability.

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Features and benefits

  • Flow rating up to 310 l/min [82 US gal/min]

  • Pressure rating up to 420 bar [6000 psi]

Efficiency
  • Cartridge-style designs offer low pressure drop, reducing heat generation and improving efficiency
  • Standard direction valves can be combined with a pilot piston to create an economical ‘pilot-to-open’ function
Reliability
  • Cartridge check valves are designed for durability and reliability, ensuring a long operational life in hydraulic systems. This reliability is crucial for maintaining the overall efficiency and performance of the system.
Functionality
  • Direct-operated check valves can be used as conventional check valves or as low-pressure relief valves.
  • Pilot-operated check valves can be used as position load locking valves or as an alternative to some counterbalance valves.

Product range

Standard direction check valves
Product Code Cavity Flow Pressure
CV3-4 C-4-2 7.6 l/min [2 US gpm] 350 bar [5000 psi]
CV08-NP SDC08-2 38 l/min [10 US gpm] 350 bar [5000 psi]
CV10-NP SDC10-2 80 l/min [21 US gpm] 350 bar [5000 psi]
CV11-12 C-12-2 114 l/min [30 US gpm] 350 bar [5000 psi]
CV11-16 SDC16-2 151 l/min [40 US gpm] 350 bar [5000 psi]
CV2-20 SDC20-2 227 l/min [60 US gpm] 210 bar [3000 psi]
3CA300 SDC20-2 300 l/min [80 US gpm] 350 bar [5000 psi]
CV6-4 C-4-2 7.5 l/min [2 US gpm] 350 bar [5000 psi]
CV6-10 SDC10-2 76 l/min [20 US gpm] 350 bar [5000 psi]
RV4-10 SDC10-2 45 l/min [12 US gpm] 350 bar [5000 psi]
Reverse direction check valves
Product Code Cavity Flow Pressure
CP104-2 CP04-2 4.5 l/min [1.2 US gpm] 350 bar [5000 psi]
CP108-2 SDC08-2 20 l/min [5 US gpm] 350 bar [5000 psi]
CP100-2 SDC10-2 50 l/min [13 US gpm] 350 bar [5000 psi]
CP101-2 CP12-2 75 l/min [20 US gpm] 350 bar [5000 psi]
CP102-2 SDC16-2 150 l/min [40 US gpm] 350 bar [5000 psi]
CP103-2 SDC20-2 265 l/min [70 US gpm] 350 bar [5000 psi]
Pilot to open check valves
Product Code Cavity Flow Pressure
4CK30 A6610 30 l/min [8 US gpm] 350 bar [5000 psi]
4SK30 A20090-T11A 30 l/min [8 US gpm] 350 bar [5000 psi]
POC1-10 SDC10-3S 60 l/min [15 US gpm] 350 bar [5000 psi]
4CK90 A12336 90 l/min [24 US gpm] 350 bar [5000 psi]
4SK90 A20092-T2A 90 l/min [24 US gpm] 350 bar [5000 psi]
4CKD90 A12336 90 l/min [24 US gpm] 420 bar [6000 psi]
4CK120 A877 120 l/min [32 US gpm] 350 bar [5000 psi]
4SK140 A20094-T17A 140 l/min [37 US gpm] 350 bar [5000 psi]
4CK300 A6935 300 l/min [80 US gpm] 350 bar [5000 psi]
SPC2-8 SDC08-3 19 l/min [5 US gpm] 240 bar [3500 psi]
SPC2-10 SDC10-3 23 l/min [6 US gpm] 210 bar [3000 psi]
RPC 06 NCS06/3 35 l/min [9 US gpm] 350 bar [5000 psi]
RPV 06 NCS06/4 30 l/min [8 US gpm] 315 bar [4600 psi]
Pilot to close check valves
Product Code Cavity Flow Pressure
5CK30 A6610 30 l/min [8 US gpm] 350 bar [5000 psi]
5CK120 A877 120 l/min [32 US gpm] 350 bar [5000 psi]
5CK300 A6935 250 l/min [65 US gpm] 350 bar [5000 psi]
Dual pilot operated check valves
Product Code Cavity Flow Pressure
DPC2-8 SDC08-4 19 l/min [5 US gpm] 240 bar [3500 psi]
4CKKT50 A12744 25 l/min [7 US gpm] 300 bar [4300 psi]
CP410-1 Catalog HIC 80 l/min [21 US gpm] 210 bar [3000 psi]

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