Product Description

Rexroth FD16KA21/B03V R900503974

The Rexroth FD16KA21/B03V (R900503974) is a high-performance 2-way flow control valve designed to maintain a constant flow rate, largely independent of system pressure and fluid temperature variations. This pressure-compensated valve ensures precise hydraulic control, making it suitable for a wide array of industrial applications where stable actuator speeds or consistent flow regulation is critical. It features a rotary knob with a scale for straightforward and accurate manual adjustment of the flow. Engineered for subplate mounting, the FD16KA21/B03V offers robust construction and reliable operation in demanding hydraulic systems.

Technical Specifications:

Product Code: R900503974
Valve Type: 2-way flow control valve, pressure compensated
Series: FD
Nominal Size: NG16
Model Code Breakdown: FD16KA21/B03V
- FD: Flow Control Valve
- 16: Nominal Size 16
- K: 2-way design
- A: Flow direction A to B
- 21: Series/Design code (Rotary knob with scale)
- B03: Specific design/feature code (often related to mounting or internal configuration)
- V: FKM (Viton) seals
Adjustment Type: Rotary knob with scale
Sealing Material: FKM (Viton)
Maximum Operating Pressure: 315 bar (4568 psi)
Maximum Flow Rate: Up to 160 L/min (42.3 GPM)
Mounting Type: Subplate mounting
Connection Pattern: Conforms to ISO 5781-08-11-0-00
Hydraulic Fluid: Mineral oil (HL, HLP) to DIN 51524; other fluids on request. Phosphate ester compatibility with FKM seals.
Hydraulic Fluid Temperature Range (with FKM seals): -20°C to +100°C (-4°F to +212°F)
Viscosity Range: 2.8 to 380 mm²/s