Forged steel gate valves are used in different industries for various applications, such as:
Chemical processing.
Municipal water supply.
Steam power plants.
Crude oil and natural liquid gas transportation.
Ships for the steam circuit.
Advantages of forged steel gate valves
These valves are bi-directional. This feature allows fluid to flow through the valve in both directions without causing malfunctions.
Forged steel gate valves have low-pressure drops when fully opened.
These valves are easy to install, clean, and repair. Removing the bonnet (top cover) makes it easy to access the internal parts of the valve for effective cleaning and restoration.
These valves have a few moving parts, which makes repair and maintenance cheaper.
They are versatile in use. This is because they can be used in different applications ranging from hot to cold fluids.
These valves are available in various sizes for high pressure and flow rates.
They are highly reliable.
Disadvantages of forged steel gate valves
They are not reliable for throttling fluid flow.
These valves occupy ample installation space.
They are slow in operation
Troubleshooting forged steel gate valves
The valve is hard to operate
Foreign materials stuck between gland flange and stem. Disassemble the valve according to the forged steel gate valve manufacturer’s guidelines and remove foreign materials.
Gland bolt over torqued. Loosen the gland bolt.
Misaligned gland flange. Re-align the gland flange perfectly.
Fluid leakage between the body and the pipe
Loose bolts. Tighten the valve-pipe flange bolts.
Worn out gasket. Replace the gasket.
Excess fluid pressure. Use a higher-rated valve or reduce pipe pressure to the level the forged steel gate valve manufacturer recommends.
Leakage between body and bonnet
Loose bolts. Tighten the bolts.
Damaged or worn-out gasket. Replace the gasket.
Leakage through the valve stem
Damaged or worn-out packing. Replace the packing.
Damaged stem. Replace the stem.
The valve does not close or open completely
Foreign materials stuck in the valve. Open the valve and remove all foreign materials.
Worn out or damaged valve seats. Replace the seats.
