Products Description
The FF-131 series electro-hydraulic servo valve is a force feedback two-stage dual nozzle baffle high flow servo valve, with a flow range of 6.5L/min to 100L/min under a pressure difference of 21MPa. The standard product of this series of servo valves adopts an aluminum alloy shell, which is lightweight. The product has a mechanical zero adjustment structure on the outside, which facilitates users to adjust according to their actual needs. The installation direction of product plugs and sockets can be selected according to needs. The product has the advantages of fast dynamic response, good linearity, zero drift, stable working performance, high reliability, long service life, small internal leakage, and low power consumption. The product installation surface has an optional fifth oil supply port, which can supply oil separately to the pilot stage. If the user's system pressure is particularly high, products with stainless steel shells can be customized. The product is suitable for non-standard equipment, testing equipment, power industry, etc.
Product Features:
● High control accuracy, fast dynamic response, and easy operation
Technical Parameter：
Item | Unit of Measurement | FF-131 Series | ||||||
FF-131/100 | FF-131/101 | FF-131/102 | FF-131/125 | FF-131/103 | FF-131/104 | |||
Oil supply pressure range | MPa | 2～28 | ||||||
Rated Supply Pressure Ps | MPa | 21 | ||||||
bar | 210 | |||||||
psi | 3050 | |||||||
Rated Flow Qn(±10%) △PN=21MPa | L/min | 6.5 | 16.5 | 32.5 | 50 | 65 | 100 | |
gpm | 1.7 | 4.3 | 8.6 | 13.2 | 17.2 | 26.4 | ||
Rated Current | mA | 15/40 | 15/40 | 15/40 | 15/40 | 15/40 | 40 | |
Coil Resistance | Q | 200±20/ 80±8 | 200±20/ 80±8 | 200±20/ 80±8 | 200±20/ 80±8 | 200±20/ 80±8 | 80±8 | |
Insulation Resistance | MQ | ≥50 | ||||||
Hysteresis Loop | % | ≤3 | ||||||
Resolution Ratio | % | ≤1 | ||||||
Linearity | % | ≤7.5 | ||||||
Symmetry | % | ≤10 | ||||||
Pressure Gain | % | >30 | ||||||
Internal Leakage | L/min | ≤0.7 | ≤0.9 | ≤1.4 | ≤2 | ≤3 | ≤3 | |
gpm | ≤0.18 | ≤0.24 | ≤0.37 | ≤0.53 | ≤0.79 | ≤0.79 | ||
Null Bias | % | ≤±3 | ||||||
Overlap | % | ≤±2.5 | ||||||
Null Shift With Supply Pressure (80%～110%)Ps |
% | ≤±2 | ||||||
Null Shift With Return Pressure (0~20%)Ps |
% | ≤±2 | ||||||
Null Shift With Temperature (-30～+150℃) | % | ≤±4 | ||||||
Frequency Response | Amplitude bandwidth(-3dB) | Hz | ≥100 | ≥100 | ≥100 | ≥70 | ≥70 | ≥50 |
Phase Bandwidth (-90°) | Hz | ≥100 | ≥100 | ≥100 | ≥70 | ≥70 | ≥50 | |
Net Weight | kg | 1.0 | ||||||
