Hydraulic Pilot Operated Check Valve

PRODUCT TYPE: Z2SHydraulic 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
– Hydraulic pilot check operation
– Three cracking pressure optional
– Sandwich plate mounting for modular valve

Z2S Hydraulic pilot operated check valve uses for closing the one or two working port without any leakage in the opposition direction.

Finotek hydraulic pilot operated check valve is manufactured as per the standard of DIN24304, ISO 4401 and CETOP RP121H as installation dimensions, which is available for mounting any brand of standard hydraulic directional valves. Our clients in modeling injection machines field require every hydraulic unit must be equipped with Z2S hydraulic pilot operated check valve, for the Z2S valve will allow the machine to work stably and make better performance of machines for producing their plastic items.

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/