... strength ; Low coefficient of friction result in easy shaft running ; Long lubricant ... in check and needle valve stems, reciprocating rods, rams, and plungers, and safety injection system valves. Specifications:1) Pressure: 2MPa in centrifugal ... pumps, 10MPa in piston pumps, 20MPa in valves2) Temperature: <280°C3) Linear speed: 4m/s in centrifugal pumps, 2m/s in piston pumps, 2m/s in ...