英國——star伺服閥
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STAR伺服閥主要用在電氣液壓伺服系統中作為執行元件(見液壓伺服系統)。在伺服系統中，液壓執行機構同電氣中，液壓執行機構同電氣及氣動執行機構相比，具有快速性好、單位重量輸出功率大、傳動平穩，抗干擾能力強等特點。
Star Hydraulics design and manufacture high quality Electro-hydraulic Servo Valves and ancillary equipment, which are used in a wide variety of market sectors
Key to the success of the company is many years of Servo Engineering Development, which enable customers to gain consistent high performance with extended operational life capability.
The company, which is privately owned and located in Tewkesbury in the South West of England.
In addition to the supply of new servo valves and electronic equipment the company repairs and can upgrade, other makes of servo valves.
The company can support both the OEM and user market sectors around the world in conjunction with the “Star International Distribution and Service Partner Network” where local facilities are available or directly from Tewkesbury which ever is the most appropriate for our customers