Bosch Rexroth 4WH16Q7X/ hydraulic directional valve
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Directional spool valve

Bosch Rexroth 4WH16Q7X/ hydraulic directional valve
Model: 4WH16Q7X/ · Bosch Rexroth
Catalog pressure-flow conditionsUse exact size/spool pressure-flow curves and minimum pilot-pressure table. Separate main P/A/B, tank T and pilot X/Y limits apply; no universal maximum-flow value is assigned.
Actuation typeHydraulic
Number of ports4
Mounting typeSubplate mounting
Number of positions3
Seal materialNBR
Full specifications ↓ Technical catalog · PDF

Description

4WH16Q7X/, manufacturer material number R900925631, is a Bosch Rexroth pilot-operated directional spool valve with hydraulic actuation, factory size code 16, nominal size 16 and spool symbol Q. The main spool controls flow direction; the pilot circuit moves the main spool.

Main-stage pressure, tank pressure and pilot pressure are independent. External pilot circuits require protection; internal pilot supply may require the specified pressure-reducing arrangement. Pressure–flow curves and minimum pilot-pressure requirements apply to the exact spool. Internal leakage is inherent to the spool design. The selected RE24751 edition covers nominal size 16 from component series 72. The factory designation identifies series 7X without establishing the delivered subseries; numerical pressure ratings are therefore withheld pending nameplate and edition-applicability confirmation.

The mounting interface is a subplate pattern, not a threaded fluid fitting. Subplates and mounting screws are separately selected; the original pages show the applicable interfaces and installation requirements.

Representative manufacturer illustration of WH and WEH pilot-operated variants; size, spool and actuation details may differ.

Full specifications

Technical specifications
Component type Directional spool valve
Catalog pressure-flow conditions Use exact size/spool pressure-flow curves and minimum pilot-pressure table. Separate main P/A/B, tank T and pilot X/Y limits apply; no universal maximum-flow value is assigned.
Actuation type Hydraulic
Number of ports 4
Port pattern ISO 4401-07-07-0-05
Mounting type Subplate mounting
Series 7X
Catalog rating conditions Main-stage pressure, tank pressure and pilot pressure are independent. External pilot circuits require protection; internal pilot supply may require the specified pressure-reducing arrangement. Pressure–flow curves and minimum pilot-pressure requirements apply to the exact spool. Internal leakage is inherent to the spool design. The selected RE24751 edition covers nominal size 16 from component series 72. The factory designation identifies series 7X without establishing the delivered subseries; numerical pressure ratings are therefore withheld pending nameplate and edition-applicability confirmation.
Control code WH
Factory model code 4WH16Q7X/
Manufacturer Bosch Rexroth
Manufacturer part number R900925631
Pilot oil return External via Y
Pilot oil supply External via X
Product family WH
Spool return Spring centering/return
Spool symbol Q
Technical edition applicability RE24751/2020-03: NG16 from component series72; actual delivered subseries requires confirmation
Factory size code 16
Nominal size 16
Technical specifications
Number of positions 3
Technical specifications
Seal material NBR