JF3-E10B,JF3-E20B, pressure relief valve

NegotiableUpdate on 05/21

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Nature of the Manufacturer: Producers

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Overview

JF3-E10B,JF3-E20B, Pressure reducing valve $r $n has high voltage stabilization accuracy: pressure fluctuation ≤ #177; 0.1 MPa， Suitable for precision low-voltage control. $r $n $r $n Low pressure opening: regulate the pressure to 0.6 MPa, covering the requirements of the low pressure circuit.

Product Details

JF3-E10B,JF3-E20B, pressure relief valve

domesticJF3 seriesFixed value output pressure reducing valve, widely used in machine tools, hydraulic stations, and construction machinery, to stabilize the high-pressure oil source and reduce it to the branch.

1、 Model meaning

JF3Series code (pilot operated pressure reducing valve)
E：Leakage type(The oil drain port returns to the oil tank separately)
10/20：path

10：DN10（3/8'）
20：DN20（3/4'）

B：Plate installation(Corresponding to tube type JF3-E10T/E20T)

2、 Technical Parameters (Comparison of Two Models)

parameter	JF3‑E10B	JF3‑E20B
work pressure	31.5 MPa	31.5 MPa
voltage regulation range	0.6～31.5 MPa	0.6～31.5 MPa
traffic	40 L/min	100 L/min
Oil leakage method	Leakage (separate oil return)	Leakage (separate oil return)
Installation method	Plate type (ISO 4401)	Plate type (ISO 4401)
medium	Mineral hydraulic oil (HLP)	Mineral hydraulic oil (HLP)
oil temperature	-20℃～+80℃	-20℃～+80℃
weight	About 3.2 kg	About 5.8 kg

3、 Structure and Principle

Pilot structureMain valve+pilot valve, stable pressure and high pressure regulation accuracy.
Fixed value outputThe secondary pressure is not affected by the primary pressure fluctuation and automatically remains constant at the set value.
Leakage design: Drain portL must be returned to the fuel tank separatelyIt cannot be shared with the return oil pipeline.
working process：

High pressure oil (P) is reduced to secondary pressure (A) through the main valve throttle.
The secondary pressure is fed back through the pilot valve, and the main valve opening is automatically adjusted to stabilize the outlet pressure.
Excess control oil returns to the oil tank from the drain port L.

4、 Performance characteristics

High voltage stabilization accuracyPressure fluctuation ≤ ± 0.1 MPa, suitable for precision low-pressure control.
Low pressure openingAdjust the pressure to 0.6 MPa to meet the requirements of the low-voltage circuit.
High traffic capacityThe E20 has a diameter of 100 L/min and is suitable for medium to large systems.
Anti vibration, low noisePilot design, with minimal impact and smooth operation.
Cast iron valve bodyDurable, leak resistant, suitable for long-term industrial operation.

5、 Appearance and installation dimensions (mm)

JF3‑E10B: Length 115 x Width 85 x Height 105; Installation hole spacing 70 × 70
JF3‑E20B: Length 140 x Width 100 x Height 120; Installation hole spacing of 90 × 90

6、 Typical applications

JF3‑E10BMachine tool clamping, hydraulic fixtures, small presses, low-voltage control circuits
JF3‑E20BAuxiliary oil circuit of injection molding machine, pilot control of construction machinery, medium-sized hydraulic station

JF3-E10B,JF3-E20B, pressure relief valve