... by bolts or flat fastener, keeping in line by rubber bearing, and non-return valve fitted on the top of the ... type stator, the rotor keep in line by water lubricating guide bearing, water lubricating bearing bear the downward force, sand guard and diaphragm for ... the water.4. Water temperature should not exceed 30.5. Solid content (weight ratio) should not exceed 0.01%.6. The ...