Pilot Operated Check Valve

PRODUCT TYPE: Z2S Pilot Operated Check Valve
VALVE SIZE:  6; 10; 16, 22
CONTROL METHOD: One Way Check, Isolated
APPLICATION Hydraulic Machines
CONNECTION TYPE: Subplate Connection
PART NOS.: FT-Z2S Series
Directional control valve division
Hydraulic solenoid valves division
– Check control, pilot operated
– DIN & ISO Standard porting pattern
– One or two actuator available for optional

Pilot operated check valve Z2S series is sandwich plate connection design, it often installed under the directional valves as a check valves. The check (one-way port) A port or B port can be selected as per the different hydraulic requirements.

Finotek Z2S pilot operated check valve is strictly tested both A and B port sealing status, fixing the problem of leakage from the threaded plug when receiving feedback from some clients of using other brand, our zero leakage qualify for check valve is right choice for your machines.

Z2S Valve Ordering Code

Example (Normal code): “FT- Z2S6 ”
Explanation As Below:


(1) Producer code= FT
(2) Z2S6= Modualr Pilot Check Valve Size6
(3) No code = A & B with check assembly
  A = A port no leakage
  B = B port no leakage
(4) 1= Cracking pressure 0.15Bar
  2= Cracking pressure 0.3Bar
  3= Cracking pressure 0.7Bar

(5) No code = NBR seals for petroleum oil
  V = FPM seals for phosphate ester
(6) No code = Black Galvanization
  B= Blue Powder Coating

Z2S Valve Technical Information

Main Raw Materials: High strength steel or casting Iron
Power: By hydraulic
Brand: Finotek or OEM
Max. Operation Pressure: 31.5Mpa
Installation type: Sandwich(Modular) mounting

Cracking Pressure: 0.05Mpa; 0.15Mpa; 0.3Mpa; 0.5Mpa
Oil Medium Temperature: -30 to +80(°C)for NBR O-rings
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

Z2S Valve Function Symbol


Z2S Valve Installation Dimensions


FT-Z2S Series Hydraulic Check Valve To Replace the Following Code:
Z2S6A1-64/ Z2S6A2-64/ Z2S6A3-64/ Z2S6A4-64/ Z2S22B4-52/
Z2S10-1-3X/ Z2S10-2-3X/ Z2S10-3-3X/ Z2S10-4-3X/ Z2S22B3-52/
Z2S10A1-3X/ Z2S10A2-3X/ Z2S10A3-3X/ Z2S10A4-3X/ Z2S22B2-52/
Z2S10B1-3X/ Z2S10B2-3X/ Z2S10B3-3X/ Z2S10B4-3X/ Z2S22B1-52/
Z2S10-1-34/ Z2S10-2-34/ Z2S10-3-34/ Z2S10-4-34/ Z2S22A4-52/