new website for more information: http://www.jiachunna.com.cn/en/product/Small-Size-Plastic-Water-Flow-Switch.html
This products is produced by plastic material, used in Sea Water Heating System, Water Purification Equipment, Welding Equipment, Laser System, to measure or control the flow rate. The Magnet don't stay in the flow, so the magnet will not contact with the rust of the water flow, so could make sure the flow switch will be stability. International Protection could be IP68 (Optional).
new link for more specification http://www.jiachunna.com.cn/index.php/list/index/g/e/id/5/p/1.html
GE-312A only have a plastic magnet inside the body, it have less component, so it will be very stability.
GE-312B and GE-312C is piston flow switch, it could installed by any postion.
* Pipe Size
GE-312A DN8 ~ DN32
GE-312B DN15 DN20 DN25
* Install Position:
GE-312B any position
GE-312C any position
GE-312A 70W max contact rating
GE-312B 10W or 50W max contact rating
GE-312C 70W max contact rating
* Protection Grade IP65 IP68 in option.
* Media Temperature -20~93 C
* Max Static Pressure 10 Bar
* Metering Substances Gas, Water, Oi, Sea Water
(If special substances, please declare, OEM Custom-made is available)