Hydraulic Pump Control Valve
Product Introduction
Sauer PV22 control valve is an integrated servo/displacement control module for Sauer Series 20 swash plate piston pumps, available in MH/MC/HDC/HDP variants. It enables stepless displacement adjustment and pressure protection, suitable for closed-loop hydrostatic drives with 350bar rated pressure. Fast response and vibration/wear resistance make it a core control unit for mobile and industrial hydraulic systems.
Product Summary
Hydraulic valves constitute the neural network of hydraulic systems, governing the directionality, pressure dynamics, and volumetric flux of hydraulic fluid to orchestrate the seamless operation of actuators.
Categorized by their operational logic, they encompass directional, pressure, and flow control valves, supplemented by an array of hybrid and specialized valves for intricate hydraulic architectures.
Product Parameters
| Items |
Specification |
| Compatible Pump |
Sauer PV22 series piston pump |
| Material |
Cast,Ductile iron, steel, bronze and others |
| Processing technic |
Cutting, lathe, machining center, heat treatment, grind, honing, burring and so on |
| Installation |
Cover plate |
| Type |
Pressure control valve |
Product Application
This hydraulic pump control valve is applied to travel and working circuits of mobile equipment such as concrete mixers, loaders, and underground load-haul-dump machines; also used in hydrostatic drives of mining machinery and port cranes, as well as closed-loop speed regulation and pressure control of test benches and industrial pump stations, delivering reliability under heavy load and frequent start-stop conditions.
FAQ
1,How to distinguish MH/MC/HDC/HDP types?
MH=hydromechanical servo; MC=with pressure compensation; HDC=hydraulic displacement control; HDP=hydraulic displacement control with pressure compensation. Verify nameplate and manual for selection.
2,How to adjust neutral drift?
Adjust servo valve neutral screw per manual, monitor flow/pressure under no-load operation, fine-tune repeatedly for leak-free neutral and smooth reversing; replace worn core/sleeve if needed.
3,Does high oil temperature affect the control valve?
Yes, it accelerates seal aging and reduces response speed/accuracy. Maintain oil temperature at -20~80℃, replace filter elements and oil regularly, and inspect cooling system.
4,What are common causes of valve noise/vibration?
Contamination, excessive pressure fluctuation, neutral drift, spring fatigue, or servo mechanism jamming. Clean filter, bleed air, re-zero, and inspect servo components for wear.
5,Can it be upgraded to electro-hydraulic proportional control?
Yes, add proportional servo valve or electro-hydraulic converter to support 4-20mA/0-10V signals. Adjust pump control logic and parameters accordingly; recommended to be implemented by OEM or authorized service providers.
Company Profile
With 12 years of dedicated experience in the hydraulic industry, Hebei Runhe Hydraulic Co., Ltd. has established itself as a trusted manufacturer and supplier of high‑quality hydraulic products. Our product range not only includes hydraulic pump control valves such as the Sauer PV 22 series, but also supports compatible pumps for Parker, Rexroth, and other leading brands, along with customized hydraulic cylinders designed to meet your exact needs.
We look forward to hearing from you!
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