ZL70-30 Proportional, Bi-Directional Flow Control, (ZL70-30)

A solenoid-operated, electrically-variable, pressure-compensated, spool-type, normally closed when de-energized, proportional, bi-directional, flow control valve. An internal compensator spool provides compensated flow across the proportional orifice regardless of flow direction.

Product Operation

The ZL70-30 provides regulated flow from port ➁ to port ➂, or regulated flow from port ➂ to port ➁. Port ➀ should be blocked. Regulated flow is proportional to electric current applied to the solenoid.
Operation of Manual Override: To Engage: Turn clockwise approximately 1 turn to reach start point. Continue
another approximately 5 turns to full shift.To Disengage: Turn counterclockwise approximately 6 turns until positive stop
is found.

Product Features

• Excellent linearity and hysteresis characteristics.
• Hardened spool and cage for long life.
• Optional coil voltages and terminations.
• Effi cient wet armature construction.
• Manual Override option.

Product Ratings

Maximum Operating Pressure: 240 bar (3500 psi)
Regulated Flow: Range A: 0–20 lpm (0–5.3 gpm); Range B: 0–10 lpm (0–2.6 gpm)
Internal Leakage: 0.38 lpm (0.10 gpm) maximum at zero current
Electrical: 2 standard voltage ratings
Temperature: -40 to 120°C with Buna N seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1.
Cavity: VC10-3; See page 9.110.1
Cavity Tool: CT10-3X-XX; See page 8.600.1
Seal Kit: SK10-3X-MM; See page 8.650.1
Threshold Current 250 ± 100 mA 125 ± 50 mA
Coil Voltage12 VDC24 VDC
Max. Control Current 1400 ± 100 mA 750 ± 50 mA

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