PVT‑03‑3,PVT-04-3, Hydraulic pilot-operated check valve

PVT‑03‑3,PVT-04-3, Hydraulic pilot-operated check valve

1、 Model meaning

• PVGuided (hydraulic control) one-way valve

• TPipe type connection (G=plate type, TF=flange)

• 03/04/06: nominal diameter

• 03=3/8 '(approximately 10mm)

• 04=1/2 '(approximately 12.7mm)

• 06=3/4 '(approximately 20mm)

• 3：Control the opening pressure to 3MPa(Standard: 0.5/3/5MPa)

2、 Technical Parameters (Summary Table)

• Working medium: ordinary/anti-wear hydraulic oil (ISO VG32-68)

• Medium temperature:‑20℃～+60℃

• Control method:Internal leakage type(Control oil return to oil tank)

• Material: Valve body cast iron, valve core alloy steel

• Installation: Any angle, avoid severe vibration

3、 Structure and Working Principle

• structureMain valve core+control piston+spring; belt1 control oil port (K).

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• principle：

• 正向（P→A）Hydraulic pressure opens the valve core,Free circulation, low pressure drop；

• Reverse (A → P)When there is no control pressure, the valve coreTightly locked and zero leakage；

• Reverse conductionControl port (K) pressure ≥3MPa→ Push the control piston to open the main valve core →A → P conduction；

• resetControl pressure below 3MPa → Spring reset → Re lock.

• 4、 Appearance and installation dimensions (tubular)

• interfaceMain oil port G thread at both ends+side control port G1/4 '

• Dimensions (length x width x height):

• PVT-03-3: Approximately 70 × 38 × 45 mm

• PVT-04-3: Approximately 78 × 42 × 50 mm

• PVT-06-3: Approximately 90 × 50 × 58 mm

PVT‑03‑3,PVT-04-3, Hydraulic pilot-operated check valve