Parker's
robust and durable pilot operated directional control valves series D31DW,
D31NW, D*1VW are almost universally applicable and ensure a reliable
operation. A wide variety of spools and options allows to design an
unlimited number of hydraulic circuits.
The pilot operated
directional control valves are available in 4 sizes: D31DW (standard) and
D31NW (high flow) in NG10/NFPA D05, D41VW in NG16/NFPA D07, D81VW (for port
diameter up to 26 mm) and D91VW (for port diameter up to 32 mm) in NG25/NFPA
D08 and D111VW in NG32/NFPA D10.
All sizes are optionally available
with position control or as explosion-proof version according to ATEX and
IECEx.
Markets
•Industrial
Features/Benefits
•Proven robust design that represents our long-term
experience in hydraulics
•Wide range of spools-suitable for almost all hydraulic circuits
•High functional limits-low forces resulting in safe operation also
at high flow rates
•Low pressure drop-resulting in low energy losses in operation
•Short delivery time-no warehousing necessary
•Optionally with position control
•Optionally without manual override
•Optionally as explosion-proof version
Applications
•Suitable for general hydraulic applications
Explosion-proof versions
The
valves are not only ATEX certified (explosion proof class is Ex e mb II T4
Gb for use in zone 1 and 2) but also equipped with IECEx compliant solenoids
which are certified in accordance with IECEx standard for equipment class 2
G. All explosion-proof solenoids are DC design. The valves for AC operate
with integrated rectifier.
Note:
The minimum
pilot pressure must be ensured for all operating conditions of the
directional valve. Additionally spools with a P to T connection in the
deenergized position need an external pressure supply (external inlet) or an
integral check valve.
