Hi all.
Long time fan of your products all back to the era of Monsun-Tison in the 1970's, later on VOAC. The directional valves have dominated CTL logging equipment in Scandinavia since then.
community.parker.com/.../variable-flow-open-center-delivers-constant-efficiency
Read this article and wonder if this VFO system is basically the same as the CPU system that was marketed by Monsu-Tison VOAC 30+ years ago? If so, is VFO just a new term for marketing the system in North America?
- Is the orifice at valve inlet approx 0.7 mm diameter?
- Can valve spools proportionally vary the the pump signal pressure in the open center gallery?
- Or does the open center gallery close just before workports connects the power gallery to the actuator?
Cheers
Per A
