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Pilot Operated Check Valve

Pilot Operated Check Valve

Pilot Operated Check Valve

Product catalog summary
Description
The Z2DS series pilot operated check valve module is designed for leak-free closing of one or both service ports (A & B). It allows free flow from A(in) to A(out) and uses a pilot spool to shift the check valve in the B line, enabling flow from B(out) to B(in). When pressures decrease, the pilot spool centers, locking both A and B check valves.
Design
  • Steel body
  • Pressure up to 315 bar
  • Tank pressure up to 160 bar
  • Pilot Ratio of 3:1
  • Low leakage seats
  • Installation compliant with ISO 4401-03-02-0-94, DIN 240 340-A6
Quality
  • Phosphate coated housing
  • CE Approved
Ordering Code
Z2DS 6 30 A V
  • Model: Z2FDS
  • Seal: Viton = V, Nitrile = blank
  • Size: 6=NG6 / CETOP03
  • Series: 30 = Size 6
  • Control: A= Check on A only, B=Check on B only, AB=Check on A & B
Technical Data
  • Nominal Size: 06 – NG6 / CETOP03
  • Maximum Flow: 60 l/min
  • Max pressure A, B, and P: 315 bar
  • Max pressure T: 160 bar
  • Hydraulic fluid: Hydraulic oil classes HM, HV to CETOP-RP 91H in viscosity class ISO VG32, 46, and 68
  • Viscosity range: 20 to 400 mm2/s
  • Fluid Cleanliness: Class 21/18/15 to ISO 4406 (1999)
  • Oil Temperature – Nitrile seals: -30 to +80°C
  • Oil Temperature- Viton seals: -20 to +120°C
  • Ambient Temperature, max: +50°C
  • Weight: 0.6 kg
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Catalog excerpts

Pilot Operated Check Valve-1

Pilot Check Module CETOP03 / NG6 Description The Z2DS series pilot operated check valve module are designed to give leak free closing of one or both service ports (A & B). When hydraulic oil flows from A(in) to A(out) the pilot operated check valve is freely opened, at the same time pressure is applied via a pilot spool to shift the check valve in B line to allow oil to flow from B(out) to B(in). When pressures are reduced the pilot spool is centred and both A and B check valves lock. Design __________________________________ - Steel body - Pressure to 315 bar - Tank to 160 bar - Pilot Ratio of 3:1 - Low leakage seats - Installation to ISO 4401-03-02-0-94, DIN 240 340-A6 - Phosphate coated housing - CE Approved Pilot Check Valve Module CETOP03

 Open the catalog to page 1
Pilot Operated Check Valve-2

V Seal Viton = V Nitrile = blank Size 6=NG6 / CETOP03 Series 30 = Size 6 Control A= Check on A only B=Check on B only AB=Check on A & B Technical Data Nominal Size Maximum Flow Max pressure A,B and P Max pressure T Hydraulic fluid Viscosity range Fluid Cleanliness Oil Temperature – Nitrile seals Oil Temperature- Viton seals Ambient Temperature, max Weight Pilot Check Valve Module CETOP03

 Open the catalog to page 2
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