Spools
When a work function such as a cylinder or motor is connected to a work section, a spool can be used to change its speed (by adjusting flow) or its power output (by adjusting pressure buildup). A spool is chosen to match a work section's activation method, and each is equipped with a spring that returns it to a neutral position when power is disrupted.
Features and benefits
- Flow control of work ports for speed control
- Pressure control of work ports (e.g., for load holding valve operations)
- Blocked neutral position for holding pressure on work port
- Drained neutral position to bleed work ports (e.g., for load holding valve operations or motor braking)
- Open neutral position for running off inertia of motor and reduce back pressure
- Symmetrical or asymmetrical flow to suite cylinder ratio
- Individual flow for each work port—both P --> port and port --> T—to suit any application
Specifications
|
Variant/family |
PVG16 |
PVG32 |
PVG48 |
PVG100 |
PVG128 |
PVG256 |
|
Max work port flow l/min (US gal/min) @350 bar [5,076 psi] |
65 [17.2] |
125 [33] |
180 [47.5] |
240 [63.4] |
320 [84.5] |
500 [132.1] |
For more information, see PVG 32 Technical Information, PVG 100 Technical Information, and PVG 128/256 Technical Information.