Profile: Siemag Industries supplies solenoid valves, needle valves, flow control valves and blowguns. Our automatic solenoid valves are used to control instrument air, low pressure gases, gravity feed & other applications where minimum size and low cost are decisive factors. Our self locking hose reel balancers are designed for light weight assembly tools and for uncluttered installations. These balancers provide simplified installations and better tool control.