I. Product Overview
This product series comprises Danfoss (formerly Sauer-Danfoss) Electric Displacement Control (EDC) modules and proportional servo valves, widely used in the displacement control systems of Danfoss S90 series variable piston pumps, S42 hydrostatic transmissions, and K3V/K5V series hydraulic pumps.
The portfolio includes KVME Series EDC proportional servo valves (42 Series), KVEBB Series complete EDC control modules, and KVEBS Series EDC control modules—providing a complete electro-hydraulic servo solution from pilot pressure control to main pump displacement regulation:
KVME11201 and KVME11204 are 42 Series EDC proportional servo valves, compatible with S42 hydrostatic transmissions and K3V/K5V hydraulic pumps
KVEBB1404 is an EDC control module specifically designed for S90 series 130cc displacement piston pumps, featuring dual coil design with integrated MCV116G4204 pilot valve
KVEBB1802 is an EDC control module specifically designed for S90 series 180cc displacement piston pumps
KVEBS0799 is an EDC control module specifically designed for S90 series 75cc displacement piston pumps, featuring 4-20mA control current
Manufactured to strict Danfoss OEM specifications, all products offer 100% direct interchangeability with original parts—no modifications required for installation. Every unit undergoes 100% application-condition simulation testing—comprehensive verification of pressure, flow, response characteristics, and leakage on dedicated test benches against published specifications. Perfect OEM replacement for Danfoss/Sauer-Danfoss original parts, ideal for hydraulic system repairs and preventive maintenance.
II. Technical Specifications
KVME11201 – 42 Series EDC Proportional Servo Valve
Model: KVME11201
Brand: Danfoss (formerly Sauer-Danfoss)
Product Series: 42 Series EDC (EDC 42 Serie)
Product Type: Electric displacement control proportional servo valve
Compatible System: S42 hydrostatic transmission
Connection: 42 Series MS connector (DE1A2)
Weight: Approx. 5.0 kg
Control Method: Proportional electric displacement control
Body Material: High-strength cast iron
Country of Origin: USA
KVME11204 – 42 Series EDC Proportional Servo Valve
Model: KVME11204
Brand: Danfoss (formerly Sauer-Danfoss)
Product Series: 42 Series EDC
Product Type: Electric displacement control proportional servo valve
Compatible System: S42 hydrostatic transmission
Material Number: 4510048
Weight: Approx. 4.16 – 4.57 kg
Control Method: Proportional electric displacement control
Country of Origin: USA
KVEBB1404 – EDC Control Module for S90 130cc Pump
Model: KVEBB1404
Brand: Danfoss (formerly Sauer-Danfoss)
Compatible Pump: S90 series variable piston pump, 130cc displacement
Control Method: Electric Displacement Control (EDC)
Coil Configuration: Dual coil
Assembly: Complete EDC control module with integrated MCV116G4204 pilot valve
Weight: Approx. 4.5 kg
Dimensions (L×W×H): 190mm × 250mm × 200mm
Country of Origin: USA
Service Kit: 8510120 SVC KIT-EDC
KVEBB1802 – EDC Control Module for S90 180cc Pump
Model: KVEBB1802
Brand: Danfoss (formerly Sauer-Danfoss)
Compatible Pump: S90 series variable piston pump, 180cc displacement
Control Method: Electric Displacement Control (EDC)
Coil Configuration: Dual coil
Assembly: Complete EDC control module with pressure control pilot valve
Body Material: Cast iron
Application: Electric displacement control for S90 series pumps
KVEBS0799 – EDC Control Module for S90 75cc Pump
Model: KVEBS0799
Brand: Danfoss (formerly Sauer-Danfoss)
Compatible Pump: S90 series variable piston pump, 75cc displacement
Control Method: Electric Displacement Control (EDC)
Control Current Range: 4 – 20 mA
Assembly: Complete EDC control module
Application: Electric displacement control for S90 series pumps
III. Key Technical Advantages
1. Precision Electro-Hydraulic Proportional Control Technology (KVME Series)
KVME11201 and KVME11204 belong to the Danfoss 42 Series EDC proportional servo valve platform, precisely regulating spool displacement via electrical control signals to achieve continuous proportional control of hydraulic pump displacement. Unlike traditional on/off control, proportional control enables stepless adjustment from zero to maximum flow—significantly improving operational precision and energy efficiency.
2. 100% Direct Interchangeability & OEM-Standard Manufacturing
All models are manufactured to strict Danfoss/Sauer-Danfoss OEM specifications, ensuring 100% mechanical and hydraulic interchangeability with original parts. KVEBB series complete control modules come pre-assembled with matched MCV series pilot valves, allowing direct replacement of original assemblies without additional setup—significantly reducing equipment downtime.
3. S90 Series Pump-Specific Modular Design (KVEBB/KVEBS Series)
KVEBB1404, KVEBB1802, and KVEBS0799 are precisely matched to S90 series 130cc, 180cc, and 75cc displacement piston pumps respectively. Each module undergoes compatibility validation with its corresponding displacement pump, ensuring perfect alignment between displacement control characteristics and pump hydraulic output performance.
4. Wide Control Current Range & Precise Displacement Regulation (KVEBS0799)
KVEBS0799 supports the industry-standard 4-20 mA control current range. This standardized current interface enables direct compatibility with the majority of industrial PLCs and controllers, eliminating the need for additional signal conversion modules and significantly simplifying system integration.
5. Dual Coil Redundancy for Enhanced System Reliability (KVEBB1404)
KVEBB1404 features a dual coil configuration, providing control redundancy. Should one coil fail, the other coil can maintain basic control functionality—significantly improving system availability and safety for critical equipment, particularly in continuous-operation applications such as construction and mining machinery.
6. High-Strength Cast Iron Body & Long-Life Design
The entire product series features high-strength cast iron valve bodies, delivering excellent impact resistance and pressure strength. Combined with precision spool clearances and high-quality sealing systems, they ensure long-term reliable operation in hydraulic systems up to 350 bar, significantly extending product service life.
IV. Application Areas
This EDC product series is specifically designed for variable pump electric displacement control systems in mobile and industrial hydraulics, compatible with the following equipment types and hydraulic systems:
Construction Equipment Hydraulics: Excavators, wheel loaders, bulldozers—electric displacement control for K3V/K5V series main pumps
Hydrostatic Drive Equipment: S42 hydrostatic transmissions—typical application for KVME series EDC servo valves
Road Construction & Compaction Equipment: Rollers, pavers—S90 series closed-circuit pump drive systems
Material Handling Equipment: Forklifts, reach stackers, telescopic handlers
Agricultural Machinery: Large combine harvesters, tractors—hydrostatic drive systems
Mining & Underground Equipment: Mining trucks, LHD loaders
Specialty Vehicles: Concrete pump trucks, municipal sanitation vehicles
Typical circuit applications include: variable pump electric displacement control (EDC) , pump outlet pressure closed-loop control, load sensing system pilot pressure control.
V. Expert Maintenance Tips
1. Verify Model & Displacement Matching (★★★★★)
KVEBB1404 is specifically designed for S90 series 130cc displacement piston pumps
KVEBB1802 is specifically designed for S90 series 180cc displacement piston pumps
KVEBS0799 is specifically designed for S90 series 75cc displacement piston pumps
Confirm pump displacement matches the module model before installation. Mismatched pairing will result in displacement control errors and may cause severe pump damage.
2. Control Current Range Verification
KVEBS0799 operates within a 4-20 mA control current range
KVME Series requires calibration of zero point and full scale using a dedicated signal generator
Calibrate control current zero point and full scale after installation to ensure displacement control accuracy. Exceeding the control current range may cause coil overheating or spool sticking.
3. Oil Cleanliness Management (★★★★★)
EDC control modules contain精密 pilot valve spools and nozzle structures that are highly sensitive to oil contamination. Maintain system oil cleanliness at ISO 4406 16/14/12 or better. Use 10μm or higher-precision return filters and inspect filter elements regularly.
4. Pilot Oil Supply Pressure Verification
KVEBB/KVEBS series EDC control modules require a stable pilot oil supply. Verify system pilot pressure meets the operating requirements of the specific model before installation. Unstable pilot pressure will directly affect displacement control accuracy and response speed.
5. Electrical Connection & Shielding
KVME series features 42 Series MS connector (DE1A2)
KVEBB/KVEBS series control modules feature standard industrial connectors
Control signals are current-based and sensitive to electromagnetic interference—use shielded twisted-pair cables for control wiring, with shield grounded at one end
6. Installation Torque Specifications
When mounting EDC control modules to the pump body, tighten mounting bolts to Danfoss recommended torque. Excessive torque may deform the module housing and affect internal spool movement; insufficient torque may cause seal failure and external leakage.
7. Storage Environment
Recommended storage temperature: -40°C to +85°C. Avoid impact loads on the module body during installation. Handle with care to prevent drop damage to pilot valve components.
