Archives: Answers

Before proceeding with pre-alignment, below checks need to be done. – First thing to check the machine is properly secured to foundation. – Check for any excessive run-out conditions i.e. Eccentric coupling bore, Bent Shaft etc. – Machine to base plate interface problems i.e. soft foot. – Ensure that no piping loads are coming on the machine, with proper stress analysis and to avoid nozzle loaRead More…

Reducer with flat side up (FSU) is used in Pump Suction. If concentric reducer is used at pump suction, air pockets may form and which results in cavitation and cause damage to Pump. To avoid this problem, Eccentric reducer FSU is used.Read More…

Alloy 825 and 625 are Nickel Chromium Alloys used for highly corrosive services with pitting. Major difference is 825 alloy contains 42% Nickel, 22% Cr and 3% Mo, 30% Fe, whereas 625 Alloy contains 60% Ni,22% Cr and 9% Mo, 3.5Cb. In addition to above tensile and yield strength of alloy 625 is more than 825.Read More…

Temperature range for Viton is -100C to 2600C. It has excellent resistance to acids, hot water, low pressure steam, chlorinated solvents, aliphatic and aromatic petroleum fuels, ozone, weather, lubricants, animal or vegetable oils.Read More…

Temperature Range for PTFE is 1000C to 2300C and for PEEK  is 1000C to 2600C.Read More…

For Low Temperature services Soft Seat valves can be used, and for high temperature applications metal seat valves. Soft Seat – PTFE/PEEK/Nylon/Synthetic Rubbers Metal Seat – CS/SS/DSS Read More…

When flow in liquid lines is suddenly stopped due to quick closing of valve, the kinetic energy converts into pressure energy, which causes the water hammer. This can damage the line.Read More…

Since horizontal position will provide larger cross sectional area, this will reduce velocity and thus aid in settling of water.Read More…

Hydrojetting ( with high pressure water jet) and RodingRead More…

Standard FBE coating thickness ranges between 250 to 500 microns (0.25 to 0.5mm).Read More…