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The PF24390625ZH2 is produced by Vickers within the Piston Pumps series for hydraulic automation circuits that need compact, positive-displacement flow control. A piston pumping element produces the displacement, and the single-acting reciprocating layout moves fluid on one stroke per revolution to maintain consistent volume. Input torque is provided through a spur gear drive connection; it engages a 1.000-inch splined straight external shaft so transmitted power is secure and backlash is limited. The housing is set at a 25-degree angle, converting rotary input into piston motion with the intended displacement geometry. The unit accepts clockwise or counter-clockwise rotation, allowing flexible mounting on either side of a power pack. Continuous duty is supported up to 3800 rpm, while rated capacity is achieved at 3000 rpm, giving designers a clear speed window for balancing output, efficiency, and component life.
For flow and pressure calculations, the pump reaches a maximum discharge flow of 1.0 gpm and sustains line pressure to 3000 psi, matching moderate-pressure actuator groups and lubrication skids. Fluid enters a 0.500-20 UNF threaded internal intake port and exits an identical 0.500-20 UNF threaded internal discharge port, so identical hose ends can be used on both sides to reduce assembly time and spare-parts stock. Case and seepage oil are returned through a 0.375-24 NF-3B drain thread that prevents excess housing pressure during continuous service. These standardized port forms simplify sealing practice, let technicians apply established torque values, and help maintain leak-free operation under thermal cycling. Using UNF threads also aligns the pump with common North American hydraulic adapters, making replacement straightforward in existing machinery.
Discharge Connection Thread
0.500-20 UNF
Discharge Connection Type
Threaded Internal
Drain Thread (case & Seepage)
0.375-24 NF-3B
Drive Connection Type
Spur Gear
Drive Shaft Length
1.000 in
Drive Shaft Type
Splined Straight External
Housing Angle
25 deg
Intake Connection Thread
0.500-20 UNF
Intake Connection Type
Threaded Internal
Maximum Continuous Speed
3800 rpm
Maximum Discharge Flow Rate
1.0 gpm
Maximum Discharge Pressure
3000 psi
Operating Speed At Rated Capacity
3000 rpm
Pumping Element Type
Piston
Reciprocating Design
Single Acting
Rotation Direction
CW/CCW
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