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.

Features and benefits
-
Flow rating up to 310 l/min [82 US gal/min]
-
Pressure rating up to 420 bar [6000 psi]

- 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

- 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.

- 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 |
| RPC 04 | NCS04/3 | 20.5 l/min [5 US gpm] | 350 bar [5000 psi] |
| SPC2-8 | SDC08-3 | 19 l/min [5 US gpm] | 240 bar [3500 psi] |
| RPC 06 | NCS06/3 | 35 l/min [9 US gpm] | 350 bar [5000 psi] |
| SPC2-10 | SDC10-3 | 23 l/min [6 US gpm] | 210 bar [3000 psi] |
| RPC 12 | NCS12/3 | 90 l/min [24 US gpm] | 315 bar [4600 psi] |
| 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] |
| RPV 06 | NCS06/4 | 30 l/min [8 US gpm] | 315 bar [4600 psi] |
Pilot to close check valves
Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| User guide | ICS Check Valves Technical Information | English | Multiple | 25 Nov, 2025 | 5.8 MB |
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