Product Overview
The OD1510211BS000, OD1506211BS000, and OD1512211AS000 are classic models in the Bosch Rexroth OD15 series of 2/2 pilot-operated solenoid ball valves (screw-in cartridge valves). Manufactured by Bosch Rexroth Italy EDI/Oil Control, the OD15 series belongs to the VEI platform of 2/2 solenoid poppet-type cartridge valves, widely used in mobile machinery, industrial hydraulic power units, injection molding equipment, and metallurgical hydraulic valve groups.
The OD15 series features pilot-operated ball valve type construction with screw-in cartridge design for direct manifold installation. The valves are characterized by compact structure, fast response, and extremely low internal leakage, with a maximum operating pressure of 350 bar (5000 psi) —making them the mainstream control elements for medium-to-high flow cartridge circuits.
Model Overview:
OD1510211BS000: VEI-8A-12-NA platform. Normally open unidirectional —allows one-way flow when de-energized (check valve function); closes when energized. Cavity: 021-E. Flow: 150 L/min. Material Number: R934001061.
OD1506211BS000: VEI-8A-2A-12 platform. Pilot-operated normally open bidirectional —allows bidirectional flow when de-energized; closes bidirectionally when energized. Material Number: R901113681.
OD1512211AS000: VEI-8A-12-NA platform. Normally open unidirectional —allows one-way flow when de-energized (check valve function); closes when energized. Cavity: 021-E. Flow: 150 L/min. Material Number: R934001100.
Model Code Breakdown (using OD1510211BS000 as an example):
OD: Oil Control / Cartridge Valve Series Identifier
15: Nominal size / series code (OD15 Series)
10: Function / flow code
21: Configuration code
1B: Seal material and option code
S000: Design / configuration suffix code
Technical Specifications
OD1510211BS000 Specifications:
Model: OD1510211BS000
Material Number: R934001061
Brand: BOSCH REXROTH / EDI / OIL CONTROL
Series: OD15 Series, VEI-8A-12-NA platform
Product Type: 2/2 Pilot-Operated Solenoid Ball Valve
Valve Type: Ball Valve Type
Normal Position: Normally Open, Unidirectional
Cavity: 021-E
Maximum Operating Pressure: 350 bar (5000 psi)
Maximum Flow Rate: 150 L/min (39.6 GPM)
Coil Type: S8-356
Supply Voltage: 24V DC
Installation Type: Screw-in Cartridge
Weight: Approx. 0.32–0.35 kg
OD1506211BS000 Specifications:
Model: OD1506211BS000
Material Number: R901113681
Brand: BOSCH REXROTH / EDI / OIL CONTROL
Series: OD15 Series, VEI-8A-2A-12 platform
Product Type: 2/2 Pilot-Operated Solenoid Ball Valve
Valve Type: Ball Valve Type
Normal Position: Pilot-Operated Normally Open, Bidirectional
Maximum Operating Pressure: 350 bar (5000 psi)
Maximum Flow Rate: 150 L/min (39.6 GPM)
Supply Voltage: 24V DC
Installation Type: Screw-in Cartridge
OD1512211AS000 Specifications:
Model: OD1512211AS000
Material Number: R934001100
Brand: BOSCH REXROTH / EDI / OIL CONTROL
Series: OD15 Series, VEI-8A-12-NA platform
Product Type: 2/2 Pilot-Operated Solenoid Ball Valve
Valve Type: Ball Valve Type
Normal Position: Normally Open, Unidirectional
Cavity: 021-E
Maximum Operating Pressure: 350 bar (5000 psi)
Maximum Flow Rate: 150 L/min (39.6 GPM)
Coil Type: S8-356
Supply Voltage: 24V DC
Installation Type: Screw-in Cartridge
Weight: Approx. 0.32–0.35 kg
Key Technical Advantages
1. Ball Valve Type Leakage-Free Construction — Extremely Low Internal Leakage
The OD15 series features ball valve type spool construction, achieving metal-to-metal sealing between the ball and seat in the closed position. Unlike spool-type valves, the ball valve design delivers extremely low internal leakage in the closed state. Normally open unidirectional models allow one-way flow with check valve function when de-energized and close completely when energized, making them ideal for high-pressure hydraulic systems requiring long-term actuator position holding with minimal leakage.
2. Bosch Rexroth Quality — Global Industrial Standard
The OD15 series is manufactured by Bosch Rexroth Italy EDI/Oil Control. Bosch Rexroth has over 40 years of experience in the compact hydraulic systems (CH) market. Every product adheres to Rexroth‘s stringent quality standards and testing protocols.
3. 350 bar High Pressure with 150 L/min Flow Capacity
The OD15 series delivers 350 bar (5000 psi) maximum operating pressure in a compact cartridge package. Flow capacity reaches 150 L/min (40 GPM) , accommodating diverse medium-to-large flow hydraulic system requirements.
4. Wet-Type Solenoid Design for Quiet, Long-Life Operation
Features wet-armature solenoid construction—the movable iron core operates fully submerged in hydraulic oil. The hydraulic oil lubricates moving parts to reduce wear and cushions switching impact and vibration. Coils can be replaced without opening the hydraulic system.
5. UNF International Standard Cavity — High Installation Compatibility
The OD15 series adapts UNF (Unified Fine) threaded cavity 021-E. Fully compatible with globally adopted UNF threaded cartridge valve interfaces for direct replacement of same-series, same-specification products. The compact cartridge design significantly reduces external tubing and fittings, minimizing system leakage risk and installation space requirements.
6. Flexible Configuration — Unidirectional and Bidirectional Options
OD1510211BS000 and OD1512211AS000 are normally open unidirectional —allowing one-way flow with check function when de-energized, closing when energized. OD1506211BS000 is pilot-operated normally open bidirectional —allowing bidirectional flow when de-energized, closing bidirectionally when energized. The versatile configuration options flexibly adapt to different circuit design requirements.
Application Areas
Construction Machinery and Mobile Equipment — Hydraulic system control for excavators, loaders, and cranes
Industrial Hydraulic Power Units — Directional control and flow switching in integrated manifolds
Injection Molding Machinery — Directional control for injection molding machine hydraulic systems
Metallurgical Equipment — Directional control for rolling mills and heavy-duty hydraulic systems
Agricultural Machinery — Hydraulic control for tractors and implements
Material Handling Equipment — Hydraulic system control for forklifts and lifting platforms
Expert Maintenance Tips
1. Installation Guidelines
OD1510211BS000 and OD1512211AS000 fit 021-E cavity (UNF threaded) . Verify cavity compatibility before installation.
Thoroughly clean the cavity and valve exterior before installation to prevent foreign particles from entering and causing seal damage or spool sticking.
Follow Bosch Rexroth/EDI specifications for installation torque to ensure proper valve seating.
Mounting position is optional—any installation orientation is acceptable based on manifold design requirements.
2. Hydraulic Fluid Cleanliness
3. Electrical Connection Specifications
All models use 24V DC supply.
OD1510211BS000 and OD1512211AS000 coil type: S8-356.
Ensure electrical connector is fully locked to maintain effective protection.
4. Seal Material and Fluid Compatibility
5. Periodic Maintenance Inspection
Inspect the valve body for external oil leakage every 2,000 operating hours or at least annually.
Check electrical connectors for looseness, oxidation, or moisture ingress.
If response lag or unstable shifting is observed, first check system fluid cleanliness and ball valve seal condition.
The OD15 series ball valve design features extremely low internal leakage—if abnormal leakage increase is observed, inspect the valve seat sealing surface for damage.
