Product Description

Rexroth R901426805 SL10PB3-44/QMG24

The Rexroth R901426805, model SL10PB3-44/QMG24, is a pilot-operated check valve logic cover designed for hydraulic systems. It belongs to Rexroth’s SL10 series of cartridge valves, intended for installation in standardized cavities (ISO 7368). This valve performs a pilot-to-open check function: it allows free flow from port B to A and blocks flow from port A to B. Flow from A to B can be established by applying pilot pressure at port X. In this specific model, the pilot control is actuated by an integrated 24V DC solenoid (QMG24). These valves are commonly used for applications such as load holding, preventing unintended actuator movement, and for sequencing operations within complex hydraulic circuits.

Technical Specifications:

Product Type: Pilot-operated check valve logic cover
Part Number: R901426805
Model Code: SL10PB3-44/QMG24
Series: SL10
Nominal Size: NG10 (Size 10)
Function: Pilot-to-open check valve (Port A to B blocked, Port B to A free flow; pilot pressure at X opens A to B)
Actuation: Solenoid-operated pilot control
Solenoid Voltage: 24V DC (QMG24 designation)
Maximum Operating Pressure (Ports A, B, X): 315 bar (4568 psi)
Maximum Flow Rate: 160 L/min (42.3 US gpm)
Mounting Style: Cartridge valve for cavity installation according to ISO 7368
Hydraulic Fluid Compatibility: Mineral oil (HL, HLP) according to DIN 51524; other fluids on request
Fluid Viscosity Range: 2.8 to 500 mm²/s
Fluid Temperature Range: -20°C to +80°C (-4°F to +176°F)
Seals: Typically NBR (Nitrile Butadiene Rubber); specific material may vary with model suffix
Cracking Pressure (B → A): Approximately 0.5 bar (7.25 psi) (standard)
Pilot Ratio (Area X to Area A-B): 1:6.5 (for PB3 function)
Filtration: Recommended cleanliness level ISO 4406 20/18/15