HYDRAULICSYSTEMME12002

HydraulicPedals

GeneralInformation

The PVD6P valve is a remote control pressure reduction valve equipped with a shock absorber. A set of four pressure reduction valves, used for controlling the secondary pressure, are installed in a single valve casing.

Moving the control lever adjusts the output pressure. The control lever valve casing contains a damping component to prevent engine rpm fluctuation.

Specifications

Primary pressure Maximum pressure 994 psi (69 bar)

Secondary pressure 0~638 psi (0~44 bar) (maximum control pressure)

Permissible back pressure

Maximum 435 psi (30 bar)

Nominal flow3 gpm (10 L/min)

Control angles ±10°, ±12.4° (single)

Weight 9 lbs. (4 kg)

PipingUse a supply pipe approximately 8mm internal diameter and a maximum of 10 ft. (3 m) in length. Return oil should flow directly into the tank to avoid back-pressure.

Structure

The remote control valve structure is shown in the assembly cross-section. See Figure 3-212. The reduction valves are inserted into the vertical axial hole in the casing.

1Spool (301)

2Secondary pressure setting spring (324)

3Return spring (335)

4Spring seating (311)

5Push rod (214)

6Plug (202)

Secondary pressure setting spring (324) calculates secondary pressure as 73~145 psi (500~1000 kPa).

Return spring (335) presses spool (301) against push rod (214).

Tilting the control handle presses down push rod (214) and spring seat (311), changing the setting of the secondary pressure setting spring (324).

Port P, oil inlet (primary pressure) and port T outlet (tank) are in casing (101).