Bosch Rexroth | ZSF100F0-1-1XM01
ZSF100F0-1-1X/M/01
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The ZSF100F0-1-1X/M/01 prefill valve is produced by Bosch Rexroth and belongs to the ZSF Prefill Valves series. It supports hydraulic automation by letting large cylinder chambers fill quickly during extension and then close to hold pressure. The nominal size of 100 defines a broad flow path suited for high displacement actuators. Its flange connection simplifies mounting on a tank or manifold face and reduces external piping. Port P is cut with a G1 thread so supply lines attach with standard fittings, while the pilot line uses a G3/8 thread at port X for compact control tubing. An opening pilot volume of 25.5 cm³ specifies how much oil the control circuit must deliver to shift the poppet. The main flow passages at ports B and p withstand up to 350 bar, supporting high force cylinder strokes, whereas port A is limited to 16 bar to protect the return side during rapid fill. The valve weighs 15 kg, permitting manual handling during assembly.
For dependable service once installed, the ZSF100F0-1-1X/M/01 observes defined fluid, temperature, and pressure limits. Port X tolerates pilot pressures up to 150 bar so the control circuit can open the valve without overstressing internal parts. The unit accepts hydraulic oils with viscosities between 10 and 800 mm²/s, providing flexibility from light to heavy fluids. It works with fluid temperatures from −30 °C to +70 °C, covering cold start and high heat duty cycles. Cleanliness must reach ISO 4406 class 20/18/15 to prevent abrasive damage to the sealing surfaces. Because no pre-decompression stage is built in, the unchecking ratio of 4.6 defines how upstream pressure assists closure when flow stops. Together these parameters enable the valve to execute rapid fill and drain functions while maintaining predictable response in varied operating conditions.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Connection Type
Flange
Hydraulic Fluid Temp Max
+70 °C
Hydraulic Fluid Temp Min
-30 °C
Max Pressure (port A)
16 bar
Max Pressure (port X)
150 bar
Max Pressure (ports B,p)
350 bar
Nominal Size
100
Pilot Volume For Opening
25.5 cm3
Port Thread P (01)
G1
Port Thread X (01)
G3/8
Pre-decompression
None
Unchecking Ratio (no Pre-decompression)
4.6
Viscosity Max
800 mm2/s
Viscosity Min
10 mm2/s
Weight
15 kg
1620 Old Apex Road
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