Hydax hydraulics suppliesoffers multisation gauge isolator valves with options to choose.. That means oone does not have to buy a six station valve to use just two or three stations which are . These single block 2, 3 and 4 station gauge isolator valves are a first in the market. These gauge isolator valve they provide the same high level of performance since as the single station valves offeredmanufactured by hydax hydraulicthe company.. Advantages are: llow [5 cc/min] drain leakage, easy push to read and spring return are the advantages of gauge isolator valve. In addition,an additional benefit is the use of only one drain port and one gauge port for all the stations is benificial which reduces , reducing plumbing and instrument cost. The gauge isolator valves are thoroughly tested and proven.