PRODUCT TYPE: CV08-20, Ball Type, Directional Control, Hydraulic cartridge check valve
APPLICATION: To Hydraulic Blocks or Manifolds
CONNECTION TYPE: Threaded, Screw-in Connection
PART NOS.: FT-CV08 Series
Valve Cavity: VC08-2
Valve Housings:  08-2-Way Valve Housing
– One Way Isolation, SS ball sealing
– Various cracking pressure for application flexibility
– Cartridge threaded connection with compact size

CV08-20 Hydraulic cartridge check valve allows the hydraulic flow into one way and blocks reverse flow. The cartridge check valve is installed to protect the hydraulic components in high pressure system, usually install in front of the pump and on the system return line.

CV08-20 Ball type hydraulic cartridge check valve blocks the flow by a high strength stainless steel ball pushed by spring on a seat, the steel ball is out of its seat position when the hydraulic pressure higher than the spring force allows flow into in directional. The ball comes back to its seat and stop the reverse flow while the pressure force gradually lower than the spring force. If the sealing component Finotek manufactured is poppet sealing, it is the same function. Finotek cartridge check valve is tested with zero leakage for reverse flow and quick response to the positive flow.

CV08-20 Cartridge Check Valve Ordering Code

Example (Normal code): “FT-CV08-20-N-25 ” Explanation As Below:

FT- CV08-20 N 25
(1) (2) (3) (4)

(1) Supplier = By Finotek
(2) Valve Type =CV08-20, Cartridge Type, Screw-In Style, Hydraulic cartridge check valve
(3) Seals: N= Buna (Std.) ; V= Fluorocarbon

(4) Bias Spring:
4 = 0.3 bar (4 psi)  ;  10 = 0.7 bar (10 psi)
25 = 1.7 bar (25 psi) ; 60 = 4.1 bar (60 psi)
100 = 6.9 bar (100 psi) ; 150 = 10.3 bar (150 psi)
200 = 13.8 bar (200 psi) ; 270 = 18.3 bar (270 psi)

CV08-20 Cartridge Check Valve Technical Information

Working Operation Pressure: 240bar(3480psi)
Proof Pressure: 350 bar (5075 psi)
Inner Leakage: Less than 0~0.10cc/min. (2 drops/min.) max. at 240 bar (3500 psi)
Working Tem.:  -30oC to +120oC
Standard Crack  Of Bias Spring: 0.3 bar (4 psi); 0.7 bar (10 psi); 1.7 bar (25 psi); 4.1 bar (60 psi)

Media Temperature: -30 to +80(°C)for NBR O-rings
Body/Housing Material:
Anodized 6061-T6 Aluminum alloy for pressure of 210bar(3045psi)
Oil Medium: Mineral oil as per DIN51 524, VDMA 24 568 or rapeseed oil, Viscosity 10 – 400 CST
Recommended Medium Filtration: ISO 4406 Standard, cleanliness class:20/18/15

CV08-20 Cartridge Check Valve Symbol


CV08-20 Cartridge Check Valve Flow Performance


CV08-20 Cartridge Check Valve Cavity