Overview
The Rexroth Z2FS 10-5-31/V is a size 10 twin throttle/check valve in sandwich-plate design, built by Bosch Rexroth for installation between an NG10 directional control valve and its subplate. Identified by Rexroth material number R900517812 and housing marking 600 808 A216-276 00517812, this unit uses spindle-with-hexagon-socket adjustment (code 5), component series 3X, and FKM (Viton) seals (code V) for compatibility with a wide range of mineral- and synthetic-based hydraulic fluids. It restricts flow to or from the A and B actuator ports of the directional valve while allowing free return flow through integrated check elements.
Key Features
- Twin throttle/check, sandwich-plate (NG10) construction conforming to ISO 4401-05-04-0-05 mounting
- Spindle with internal hexagon socket and scale for repeatable flow setting
- Component series 3X — interchangeable installation and connection dimensions with 30…39 range
- FKM (V) seals for broad hydraulic fluid compatibility, including HFDR/HFDU
- Used in either supply (meter-in) or discharge (meter-out) throttling depending on orientation
- Maximum operating pressure 315 bar with up to 160 L/min flow
Technical Specifications
Verified specifications for the Rexroth Z2FS 10-5-31/V (R900517812) sandwich plate throttle check valve are summarized in the specs table on this page.
Typical Applications
- Actuator speed (main flow) adjustment between directional valves and subplates
- Switching time / pilot flow limitation on pilot-operated directional valves
- Injection molding machines, presses, machine tools, and mobile power units
- Any NG10 (CETOP 5) hydraulic stack requiring controlled meter-in or meter-out throttling
Compatibility & Replacements
This valve interchanges with current Bosch Rexroth catalog code Z2FS 10-5-3X/V (R900517812). It mounts on any ISO 4401-05-04-0-05 (NG10 / CETOP 5) interface and stacks beneath compatible Rexroth 4WE10, 4WEH10 and equivalent NG10 directional valves. Verify adjustment type (spindle with hexagon, code 5) and seal material (FKM) match your existing valve before installation. Units listed here are tested used stock — a cost-effective alternative to long-lead-time new replacements.
