I need flow metering devices at a low cost for geothermal applications some in the 3 to 10 gpm range and some in the 5-25 Gpm range. Is there a valve that can be setup to give costant flow with varying pressures that is mechanical only and project I am working on must be compatible with methynol at 20% solution but these are generally just water. 联系方式Co:The Geothermal Guys Ltd Add:3811 11 Ave, Salmon Arm, BC Tel:1-250-8320070 Email:info@geothermalguys.ca Website:www.geothermalguys.ca 联系人：Mr. randy arsenault国家：Canada产品类别机械五金info@geothermalguys.ca
