Danfoss Valve PVG 256 Basic Modules { PVB }, also referred to as work sections, is the interface between the PVG 256 Proportional valve group and the work function such as a cylinder or a motor.
Technical Data PVB 256 3-way Compensator :
- Max. Rated Pressure :
- A/B port continuous : 350 bar { 5076 psi }
- A/B port intermittent : 400 bar { 5800 psi }
- Max. Rated Flow : A/B port : 450 L/min { 119 US gal/min }
- Oil Temperature :
- Recommended 30 to 60c { 86 to 140f }
- Minimum : -30c { -22f }
- Maximum : 90c { 194f }
- Ambient Temperature : Recommended -30 to 60c { -22 to 140f }
- Oil viscosity :
- Operating range : 12 to 75 mm2/s
- Minimum : 4 mm2/s { 39 SUS }
- Maximum : 460 mm2/s { 2128 SUS }
- Oil Contamination : Maximum : 23/19/16
- Max. Internal Leakage :
- A/B > T without shock valve : 70 cm3/min { 4.27 in3/min }
- A/B > T with shock valve : 85 cm3/min { 5.19 in3/min }
The compensated PVB is intended for controlling a work function where the function behavior in terms of flow and pressure requires independency on the load pressure of other function used simultaneously.
The integrated LS A/B relief Valves are used to limit the maximum work port pressure on the A and B port individually. The compensator is a 3-way type which include load drop check valve functionality, compensator function and neutral relief which avoid A and B port pressure build up in neutral.