product
RYAN independently researched and developed the load sensing , electro-hydraulic control proportional valve, with post-pressure compensation, which has already received good response from different markets. It can achieve accurate proportional flow. The main spool reset adopts a spring reset method, which can provide better flow characteristics and low hydraulic dynamic force.
GBV200 Proportional valve is a load sensitive and post-pressure compensated proportional valve. For post-pressure compensation valve, it can distribute flow proportionally. Because of the pressure compensation, working flow is independent of load. All the proportional valves in this series have been load sensing and spring return. We can choose different cartridge unit for the main valve body to accomplish different function.This series valve is building with modular design concept, system designer can choose different module to accomplish various complicated system design. Valve spool can provide excellent flow characteristics and low flow force.
| Max. pressure | P port(Con.) | 310 bar | [4495 psi] |
| P port(Int.) | 350 bar | [5075 psi] | |
| A/B port(Con.) | 310 bar | [4495 psi] | |
| A/B port(Int.) | 350 bar | [5075 psi] | |
| T port(Static/dynamic) | 25/40 bar | [365/580 psi] | |
| Rated flow | P port | 100 l/min | [22US gal/min] |
| A/B port | 55 l/min | [12US gal/min] | |
| Spool Stroke | Dead band | ±1.5 mm | [±0.06 in] |
| Proportional range | ±5.0 mm | [±0.2 in] | |
| Floating position | ±7.5 mm | [±0.3 in] | |
| Max. internal leakage at 100bar [1450 psi] and 21mm²[102 SUS] | A/B → T Unbuffered valve | 20 cm³/min | [1.85 in³/min] |
| A/B → T Buffer valve system setup 30 bar ystem setup 30 bar | 25 cm³/min | [2.15 in³/min] | |
| Oil port （Temperature） | Recommend | 30→60℃ | [86→140 ℉] |
| Min. | -30℃ | [-22 ℉] | |
| Max. | 90 ℃ | [194 ℉] | |
| Ambient temperature | -30→60℃ | [-22→140 ℉] |
RYAN GBV200 series load sensing proportional valves are widely used in crane trunk，tractor，loader and rig.
