Parker PAVC Series Variable Displacement Axial Piston Pump
Guangdong Haozheng Hydraulic Equipment Co., Ltd. specializes in manufacturing high-precision, heavy-duty Parker PAVC series variable displacement axial piston pumps. Designed primarily for open-circuit hydraulic systems, the PAVC series utilizes a high-strength swashplate design driven by a unique hydraulic servo control mechanism. This provides exceptionally fast response times, high operational stability, low acoustic noise levels, and a comprehensive selection of control options matching advanced modern automation metrics.
As your trusted international B2B hydraulic engineering manufacturer, Haozheng provides complete PAVC pump assemblies and premium internal rotating groups with 100% dimensional and operational interchangeability with original Parker Hannifin products [cite: Gemini Chat. Evidence: Direct identification of the company name while requesting SEO content and optimization for the website haozheng.ru. Date: 2026-05., Gmail. Evidence: Management of domain names and product listings for haozhenghydraulic.com and hydraulic-pumpparts.com. Date: 2024-11 to 2026-04.]. To withstand intense cyclic operational pressures and ensure absolute drop-in reliability, every single unit is rigorously qualified on our advanced hydraulic test benches before global maritime dispatch.
Technical Parameters & Model Selection Guide
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Design Principle: Swashplate design, variable displacement
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Circuit Configuration: Open Circuit
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Nominal Pressure: 300 Bar (30 MPa)
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Peak Pressure: Up to 350 Bar (35 MPa)
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Core Displacements Available: 33 / 38 / 65 / 100 cc/rev
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Available Control Options: Standard Pressure Compensator , Remote Pressure Control (M), Load Sensing (P), Torque Limit Control (H)
| Base Model | Displacement (cc/rev) | Rated / Max Speed (RPM) | Full Model Cross-Reference Examples | Typical Control Block Formats |
| PAVC 33 | 33 cc/rev | 3000 RPM | PAVC33R422, PAVC33L42M22 | Pressure / Remote Compensator |
| PAVC 38 | 38 cc/rev | 3000 RPM | PAVC38R42A22, PAVC38R42P22 | Load Sensing / Torque Limiter |
| PAVC 65 | 65 cc/rev | 2600 RPM | PAVC65R4222, PAVC65L42H22 | Pressure / Remote / Load Sensing |
| PAVC 100 | 100 cc/rev | 2200 RPM | PAVC100R4222, PAVC100R42M22 | Heavy Industrial Complex Controls |
High-Response Fluid Power for Severe Industrial & Mobile Applications
Thanks to its cartridge-style controls and durable high-pressure swashplate casing, our PAVC series piston pumps deliver uncompromised reliability across high-frequency manufacturing setups:
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Heavy Duty Metalwork Machinery : Widely utilized as the primary power source for high-speed CNC pressing blocks, metal punching machines, and heavy shearing lines.
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Plastic & Rubber Processing: Driving core clamping, material injection, and auxiliary hydraulic cylinder actions in factory plastic extrusion and molding presses.
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Primary Industrial Power Units : Operating continuous-duty material handling machinery, heavy scrap metal balers, and manufacturing facility automation loops.
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Mobile Infrastructure Systems : Supplying high-pressure fluid lines for specialized drilling rigs, material handling systems, and utility construction attachments.
The Haozheng Advantage: Cartridge-Level Tolerance Control & Dynamic Bench Logs
Procuring your Parker replacement components from Guangdong Haozheng Hydraulic Equipment Co., Ltd. builds a bulletproof procurement channel tailored for heavy distribution:
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100% Plug-And-Play Interchangeability: Our complete PAVC pumps and internal rotating components (including cylinder barrels, piston shoes, swashplate blocks, valve plates, and custom cartridge seal groups) match Parker metrics identically for direct field servicing.
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Dynamic Multi-Stage Test Bench Validation: No operational leaks permitted. Every PAVC unit faces intense dynamic pressure tests on our computerized test benches to log control valve responsiveness and measure volumetric efficiency under maximum operating temperatures.
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Heavy Sea-Freight Sealing Safeguards: All products are thoroughly coated with premium anti-rust oil barriers, moisture-sealed, and safely crated within standard export fumigation-free wooden cases to withstand harsh marine shipping climates.
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Reliable Core Stocking Strategy: We maintain an active physical backup of critical sizes (such as PAVC38 and PAVC65) with diverse compensator options to dramatically cut down plant breakdown lead times.
Haozheng Hydraulic Production Processing Diagram
Haozheng Hydraulic Honorary Certificate
Exhibition
Frequently Asked Questions (FAQ)
Q1: What unique benefit does the PAVC series hydraulic servo control system offer over standard spring-return designs? A: Unlike traditional designs that rely heavily on mechanical spring return forces to adjust the swashplate angle, the Parker PAVC series utilizes system fluid pressure via a built-in hydraulic servo piston to force the swashplate back to zero displacement. This layout results in significantly faster response times, exceptional stability under rapid load changes, and eliminates spring fatigue concerns.
Q2: Can I adjust the maximum displacement stroke on a PAVC pump in the field? A: Yes. PAVC series pumps feature an adjustable maximum volume screw located on the pump housing. This allows maintenance technicians to mechanically limit the maximum swashplate angle and tailor the maximum flow output to match the precise flow restrictions of your specialized machine circuit.
Q3: What critical initial priming steps protect a new PAVC pump from terminal scuffing? A: Because of its high-speed internal servo ports, air inside the housing can cause instant dry-rubbing and cylinder damage. You must completely fill the pump casing with fresh, pre-filtered hydraulic fluid through the top case drain port before initial startup. Additionally, ensure the pump’s air bleed valve is functioning correctly to purge trapped air from the internal passageways upon startup.
