Xuzhou Sunwell Power Transmission Machinery Co.,Ltd.

PVG Proportional Valves

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PVG Accessories

The PVBZ valve is a load and pressure compensated valve module with two pilot operated check valves (PO Check valves)  in the A- and B-ports. These are limiting the work port leakage to a very low limit, below 1 ccm/min.
The new PVBZ basic module can be mixed with basic modules PVB (with additional tank line T0) and offers the following features:
• Integrated pilot operated check valves for limited internal leakage
• Integrated with heat-actuated safety shut-off valve
• Standard 4/3 spools
• 4/4 float spools
• Interchangable spools
For more information, please click the link below:
PVG Accessories
Max. pressure Port P continuous 210 bar [3045 psi]
Port A/B 210 bar [3045 psi]
Port T, static/dynamic 25 bar/40 bar [365/580 psi]
Oil flow, rated Port P 140 l/min [37 US gal/min]
Port A/B, with press. comp. 100 l/min [26.4 US gal/min]
Port A/B, without press. comp. 125 l/min [33 US gal/min]
Spool travel, standard ± 7 mm [±0.28 in]
Spool travel, float position spool Proportional range ± 5.5 mm [±0.22 in]
Float position 7.5 mm [±0.30 in]
Dead band,flow control spool Standard ± 0.8 mm [±0.03 in]
Max. internal leakage at
200 bar [2900 psi]
21 mm2/s [102 SUS]
 
A/B → T 1 cm3 [0.06 in3/min]
/min]
Oil temperature
(inlet temperature)
Recommended temperature 30 → 60°C [86 → 140°F]
Min. temperature -30°C [–22°F]
Max. temperature +90°C [194°F]
Ambient temperature 30 → +60°C [–22 → +140°F]
Oil viscosity Operating range 12 - 75 mm2/s [65 - 347 SUS]
Min. viscosity 4 mm2/s [39 SUS]
Max. viscosity 460 mm2/s [2128 SUS]
Filtration Max. contamination(ISO 4406) 18/16/13 18/16/13