Bosch Rexroth | ZSF160F0-1-1XM01
ZSF160F0-1-1X/M/01
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The ZSF160F0-1-1X/M/01 valve is manufactured by Bosch Rexroth for the ZSF Prefill Valves series and is used in hydraulic presses to let large cylinders fill quickly during low-pressure strokes and close securely for high-pressure work. The flange connection seats the unit directly on a mating surface to reduce external piping, and the nominal size of 160 permits the flow capacity needed for wide-bore actuators. A main poppet area of 196.07 cm² defines the flow cross-section when the valve lifts, while a 40 mm poppet stroke sets the maximum opening distance. The control spool area of 45.36 cm² establishes the pilot force required to shift the valve, and the 9.08 cm² pilot poppet area helps the assembly respond quickly when pilot pressure is supplied. Opening demands a pilot oil volume of 122.0 cm³, so the pilot circuit must deliver that displacement for full travel. An unchecking ratio of 4.3 links pilot pressure to cylinder pressure to ensure secure closing under load, and the 47 kg mass influences the structural support selected for installation.
Maximum pressure at port P or port b is limited to 350 bar for high-force pressing stages, port X is rated at 150 bar because it only carries pilot oil, and port A withstands 16 bar during tank return. A G1 1/4 thread on port P accepts large inlet plumbing for main flow, while a G1/2 thread on port X matches the smaller pilot line. NBR seals are fitted to maintain compatibility with standard mineral oils and moderate temperature ranges. The valve includes no pre-decompression feature, so external circuitry must handle pressure surges when the poppet opens. These pressure limits, connection sizes, and sealing details complete the functional parameters needed to integrate the valve into heavy-duty hydraulic automation systems.
Technical Specifications
Connection Type
Flange
Control Spool Area
45.36 cm²
Main Poppet Area
196.07 cm²
Main Poppet Stroke
40 mm
Max Pressure (port A)
16 bar
Max Pressure (port P/b)
350 bar
Max Pressure (port X)
150 bar
Nominal Size (ng)
160
Pilot Poppet Area
9.08 cm²
Pilot Volume For Opening
122.0 cm³
Port P Thread
G1 1/4
Port X Thread
G1/2
Pre-decompression
None
Seal Material
NBR
Unchecking Ratio
4.3
Weight
47 kg
1620 Old Apex Road
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