Bosch Rexroth | Z2FS6-5-4X1QV
Z2FS6-5-4X/1QV
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The Z2FS6-5-4X/1QV valve is produced by Bosch Rexroth within the Z2FS Throttle Check Valves series and is intended to meter flow in hydraulic automation circuits. Built in nominal size 6, it installs as a sandwich plate between subplates and directional valves. Its porting follows ISO 4401-03-02-0-05, and the footprint matches NFPA T3.5.1 R2-2002 D03 for easy stacking. Throttling acts on sides A and B to control flow in both directions. Flow is set with a spindle that has an internal hex and an engraved scale, and the 1Q design enables fine adjustment. The assembly tolerates operating pressures up to 350 bar without compromising performance.
During service, the Z2FS6-5-4X/1QV passes up to 80 l/min while maintaining stable restriction. System oil must reach ISO 4406 (c) 20/18/15 cleanliness, and FKM seals are used to handle elevated temperature and chemical exposure. Internal leakage at a 350 bar differential remains under 1 l/min to preserve efficiency. The body is only primed, so no additional corrosion protection is supplied, and the design omits a locating hole, requiring careful alignment during mounting. The valve weighs 1.2 kg, keeping manifold assemblies compact.
Technical Specifications
Adjustment Type
Spindle With Internal Hex And Scale
Corrosion Protection
None (Primed)
Fine Adjustment
Yes (1Q)
Fluid Cleanliness
ISO 4406 (c) 20/18/15
Leakage At Δp 350 Bar
<1 l/min
Locating Hole
None
Max Flow
80 l/min
Max Operating Pressure
350 bar
Mounting Type
Sandwich Plate
Nfpa Pattern
T3.5.1 R2-2002 D03
Nominal Size
6
Porting Pattern
ISO 4401-03-02-0-05
Seal Material
FKM (V)
Throttle Sides
A And B
Weight
1.2 kg
1620 Old Apex Road
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