上海乾拓贸易有限公司
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流量阀程序几乎涵盖影响液压所需流量的所有功能。
TEMPERATURE RANGE
zzrelaxation of springs made
valves - 20°C)
zzFPM: from -20°C to +120°C (all other influences see point 4)
6. VISCOSITY
HYDAC valves may be used generally only in specific viscosity ranges, as in
流量阀通过机械或液压改变节流阀横截面来影响系统中的流量。 HYDAC在这一领域提供
手动和液压控制的阀门。Like the ambient temperature the media temp. range has a direct effe
ct on the used materials in the valve, e.g. their mech. strength. General
ly, the maximum temperature depends primarily on the sealing materials. H
YDAC defines here:
zzNBR: from -30°C to +100°C (solenoid
solenoid valves - 20°C)
zzFPM: from -20°C to +80°C (sometimes up to +100°C)
There are also deep temperature valves (TT), where the seals are specially designed for low temperatures.
Other influences of temperature:
zzbrittle fracture of steel at low temperatures
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