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Needle Valve, Direct Acting, Inline Mounted – DV / DRV 20 to 40

Needle Valve, Direct Acting, Inline Mounted, DV / RV 20 to 40

The DV is an inline mounted flow control valve which controls the flow by adjusting the cross-section.

The flow rate is dependent on the pressure differential and viscosity. Starting with the throttle spindle in the fully closed position, the flow rate increases in accordance with the appropriate curve as the control knob is turned. Therefore, the control of the flow is in both directions. Plus, the scale and coloured rings on the top of the control knob enable accurate repeat setting.

On the other hand, the DRV is a flow control valve in the same design. So, it also allows the same fine flow adjustment, but in one direction only.

Unrestricted flow in the reverse direction is via the built-in check valve (cracking pressure 0.5 bar).


  • Regulating the speed of loads
  • Fine adjustment and shut-off of the flow
  • System-related damping in hydraulic circuits
  • To release pressure from accumulator systems
  • As an emergency drain for lowering a load without a dead man’s circuit
  • High level of safety provided by patented spindle safety mechanism
  • A set-screw lock the setting
  • Choice of four sizes for optimum adaptability to the system
  • Finally, nickel-plated version available as an option


Flow Control Valves DV Series (06 – 40)

705002DV 06 01.X/01/8
705014DV 08 01.1/01/4
705026DV 10 01.1/03/8
705038DV 12 01.1/01/2
705050DV 16 01.1/03/4
705062DV 20 01.X/01
705074DV 25 01.X/01 1/4
705086DV 30 01.X/01 1/2
705098DV 40 01.X/02

Flow Control Valves DRV Series (06 – 40)

705502DRV 06 01.X/01/8
705514DRV 08 01.1/01/4
705526DRV 10 01.1/03/8
705538DRV 12 01.1/01/2
705550DRV 16 01.X/03/4
705562DRV 20 01.X/01
705574DRV 25 01.X/01 1/4
705586DRV 30 01.X/01 1/2
705598DRV 40 01.X/02
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