Parker PV series plunger pump

Parker PV series variable displacement plunger pump is the core component in the industrial hydraulic field. It is widely used in injection molding machine, engineering machinery, ship hydraulic system and other scenes with its high efficiency, high reliability and modular design.
1、 Core specification parameters
Range of displacement
Standard displacement: 8, 11, 16, 21, 23, 25, 27, 32, 38, 45, 53, 60, 68, 76, 90, 100, 107, 125, 140, 180, 200, 250 cm ³/rev
Customized displacement: non-standard displacement of 5~500 cm ³/rev can be provided to meet special needs (such as ultra-small flow or ultra-large flow system).
Displacement accuracy: ± 2% (ISO 9110 compliant) for flow stability.
Pressure rating
Rated pressure: 28 MPa (continuous operation, service life ≥ 10000 hours)
Peak pressure: 35 MPa (short-term allowable, ≤ 1 minute, applicable to impact load scenario)
Low voltage starting pressure: ≤ 0.5 MPa (excellent no-load starting characteristics and reduced motor starting current).
Speed range
Minimum speed: 300 rpm (ensure the oil viscosity ≥ 10 cSt to avoid insufficient lubrication)
Rated speed: 1800 rpm (continuous operation, volume efficiency ≥ 95%)
Maximum speed: 3000 rpm (short-term allowable, enhanced lubrication and cooling required, e.g. increased oil flow).
Performance index
Volumetric efficiency: ≥ 95% (rated condition, ISO 4406 18/16/13 cleanliness)
Overall efficiency: ≥ 90% (rated working condition, mechanical efficiency ≥ 95%)
Noise level: ≤ 72 dB (A) (1m distance, rated speed, complying with ISO 3744 standard)
Service life: design service life ≥ 10000 hours (continuous operation, oil cleanliness up to standard).

Parker PV series

2、 Control mode and function
Pressure compensation variable control (R1/R2)
Principle: Adjust the pump displacement through the spring and pressure signal to keep the outlet pressure constant.
R1: Standard pressure compensation, applicable to single pump system (such as injection molding machine clamping).
R2: remote pressure compensation, external pressure signal source, applicable to multi-pump parallel system (such as die lock of die casting machine).
Response time: ≤ 50 ms (displacement adjustment speed when pressure changes).
Flow compensation variable control (K1/K2)
Principle: Adjust the displacement through the feedback of flow sensor to keep the outlet flow constant.
K1: Standard flow compensation for constant flow demand scenarios (e.g. NC machine feed).
K2: Flow compensation with pressure priority, which preferentially meets system pressure requirements (such as test bench loading).
Flow accuracy: ± 1% (steady state condition).
Load sensitive control (LS)
Principle: Adjust the pump displacement through the load pressure signal to achieve demand-based oil supply, with obvious energy saving effect.
Application scenario: systems with frequent load changes such as walking motor of engineering machinery and luffing mechanism of crane.
Energy saving effect: it can reduce energy consumption by 20%~30% compared with the constant displacement pump.
Electric variable control (E1/E2)
E1: 4-20 mA electric signal control displacement, response time ≤ 50 ms, applicable to analog control scenario (such as hydraulic press).
E2: CAN bus communication control, supporting linkage with PLC or industrial computer, realizing digital hydraulic system (such as intelligent production line).
Communication protocol: support CANopen, Profibus-DP and other industrial buses.

parker piston pump