Valve installation of 10 misunderstandings can not be ignored vent valve installation and use matters needing attention
With the rapid development of technology and innovation, valuable information that should be conveyed to industry professionals is often obscured. While shortcuts or quick methods may well reflect short-term budgeting, they show a lack of experience and overall understanding of what makes the system viable in the long run. Based on that experience, the following list (of no particular importance) lists 10 common and easily overlooked installation mistakes:
With the rapid development of technology and innovation, valuable information that should be conveyed to industry professionals is often obscured. While shortcuts or quick methods may well reflect short-term budgeting, they show a lack of experience and overall understanding of what makes the system viable in the long run. Based on that experience, the following list (of no particular importance) lists 10 common and easily overlooked installation mistakes:
1. Bolts are too long
For the bolts on the valve, only one or two threads should exceed the nut. The risk of damage or corrosion can be reduced. Why buy a bolt longer than you need? Often, the bolts are too long because someone doesn’t have the time to calculate the correct length, or the individual simply doesn’t care what the end result looks like. This is lazy engineering.
2. Control valve is not isolated separately
Although the isolation valve takes up valuable space, it is important to allow personnel to work on the valve when maintenance is required. If space is limited, if the gate valve is considered too LONG, at least install a butterfly valve, which takes up almost no space. Always remember that they are easier to work on and more efficient for maintenance tasks when you have to stand on them for maintenance and operations.
3. No pressure gauge or device is installed
Some utilities like to calibrate testers, and these facilities usually do a good job of providing their field personnel with connections to test equipment, but some devices even have interfaces for mounting accessories. Although not specified, it is designed so that the actual pressure of the valve can be seen. Even with supervised control and data acquisition (SCADA) and telemetry capabilities, someone at a certain point will be standing next to the valve and need to see what the pressure is, that’s so convenient.
4. The installation space is too small
If it’s a hassle to install a valve station, which may involve digging concrete, etc., don’t try to save that cost by making it as little installation space as possible. Basic maintenance at a later stage would be very difficult. Also keep in mind that tools can be very long, so space must be set to allow space so that the bolts can be loosened. You also need some space, which allows you to add devices later.
5. Late disassembly is not considered
Most of the time, installers understand that you can’t connect everything together in a concrete chamber without needing some type of connection to remove parts at some point in the future. If all the parts are tightly screwed and there are no gaps, it is almost impossible to separate them. Both groove couplings, flange joints and pipe joints are necessary. In the future, parts may sometimes need to be removed, and while this is usually not a concern for the installation contractor, it should be a concern for the owner and engineer.
6. Install the concentric reducing pipe horizontally
This may be nitpicking, but it’s worth paying attention to. Eccentric reducer can be installed horizontally. Concentric reducers are mounted in vertical lines. In some applications that require installation on a horizontal line, eccentric reducers are used, but this problem usually involves cost: concentric reducers are cheap.
7. Valve Wells that do not allow drainage
All the rooms are wet. Even during valve startup, water will fall to the floor at some point as air is drained from the bonnet. Anyone in industry at any time has seen a flooded valve, but there’s really no excuse (unless, of course, the entire area is flooded, in which case you have a bigger problem). If a drain pipe cannot be installed, use a simple drain pump, assuming a power supply. A float valve with an ejector will effectively keep the chamber dry in the absence of power.
8. Do not exclude air
As the pressure drops, air is drained from the suspension and diverted into the pipe, which can cause problems downstream of the valve. A simple bleed valve will get rid of any air that may be present and will prevent downstream problems. The bleed valve upstream of the control valve is also effective, as the air in the guide line may cause instability. Why not remove the air before it reaches the valve?
9. Spare connector
This may be a minor problem, but it is always helpful to have spare splitters in the chambers upstream and downstream of the control valve. This setup facilitates future maintenance, whether it’s connecting hoses, adding remote sensing to control valves or adding pressure transmitters to SCADA. For the small cost of adding accessories at the design stage, it significantly increases usability in the future. Makes maintenance tasks more difficult because everything is covered in paint and therefore nameplates cannot be read or adjusted.
10. Remember: Doing things the right way always proves beneficial, but shortcuts usually lead to more problems. Although these 10 points may be considered too picky by some, a wise old teacher once said to me, “When you chew meat, spit out the bone.
Notes for installation and use of vent valve Installation and use technical requirements:
1, the valve chamber should be cleaned before installation, and defects caused in transportation;
2, vent valve installation should keep the butterfly valve drive shaft is horizontal, the piston valve vertical upward position;
3. Before using the valve, the transmission device should be adjusted to keep the functions of the transmission device intact, and the limit stroke and over-torque protection control are reliable;
4, the valve transmission device lubrication parts before commissioning to fully add lubricating oil;
5. Before starting the electric device, read carefully the manual of the electric device provided with it.
Service and maintenance
1. Observe the opening and closing of the valve regularly after use, and deal with problems in time;
2. Fill lubricating oil regularly to maintain good lubrication conditions of all moving parts;
3. After using for a period of time, if it is found that the piston is not strictly closed, the piston ring should be checked and replaced.
Post time: Sep-15-2022
