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About product and suppliers:
        Alibaba.com offers 363 proportional water valve products. About 100% of these are valves. 

A wide variety of proportional water valve options are available to you, such as control, diaphragm, and ball. You can also choose from brass, stainless steel, and plastic. As well as from solenoid, pneumatic, and hydraulic. And whether proportional water valve is normal temperature, medium temperature, or high temperature. 

There are 364 proportional water valve suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Japan, which supply 97%, 1%, and 1% of proportional water valve respectively. 

Proportional water valve products are most popular in North America, Western Europe, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 190 with ISO9001, 169 with Other, and 15 with ISO14001 certification.