Description: Sharp (Trouble)shooting
If you are responsible for a system with multiple automatic control valves, I recommend creating a spreadsheet or database to enter the important data about the valve. Enter the manufacturer, model, serial number, and any other pertinent information available. Take a picture of the valve when it is installed when possible. Then, use a map to show the location of the valve with a corresponding...
PublisherWater Environment Federation
Word count144
Description: Sharp (Trouble)shooting
As mentioned earlier, there are many valves that perform control tasks for different applications in different areas. For example, valve 1 may perform the same tasks as valve 2, but valve 1 operates in a distant area with more particulates, increased pressures, and a higher possibility for tuberculation (the formation of small mounds of corrosion products on the inside of iron pipes). As these are...
PublisherWater Environment Federation
Word count174
Description: Sharp (Trouble)shooting
When troubleshooting a control valve, it is always recommended to have the schematic of the valve as well as the instruction and operation manual (IOM) on site. Many manufacturers of automatic control valves provide a full submittal document about every item utilized to make the control valve function as it is provided from the factory. In addition, an IOM is provided with a schematic, valve...
PublisherWater Environment Federation
Word count129
Description: Sharp (Trouble)shooting
Using isolation ball valves at the ports of the pilot system will enable an operator to close the upstream ball valve to lock the main valve in an open position, close the downstream ball valve to lock the main valve in a closed position, and close the top cover/bonnet ball valve to lock the diaphragm in its current position. These isolation ball valves enable the operator to lock the valve in...
PublisherWater Environment Federation
Word count136
Description: Sharp (Trouble)shooting
A valve can be tested at any time and often simply by utilizing the above-mentioned pilot system isolation ball valves and or by a gate valve exercising program. The use of these isolation valves ensures both the spring settings of the pilot controls and the function of the mainline valves as well.
PublisherWater Environment Federation
Word count86
Description: Sharp (Trouble)shooting
Yes, a control valve is an asset to be used for information, as well as control. Every valve manufacturer has a multitude of transmitters, in addition to controls, and whether it is converting a standard hydraulic valve into a metering control valve or passive metering measurement. If one has the right amount of differential pressure, a diaphragm-actuated automatic control valve can control or...
PublisherWater Environment Federation
Word count102