Where the compensators and valves are installed in the piping system is critical to ensuring the proper operation, safety, and reliability of the system. A reasonable installation location not only optimizes the performance of the system, but also reduces maintenance costs and extends the life of the equipment. Here are some regulations and recommendations regarding where the compensator and valve are installed:
Compensator installation position specification
Close to a heat source or temperature change area：
Compensators should be installed as close as possible to heat sources (e.g. furnaces, heat exchangers) or areas with large temperature variations to maximize thermal expansion and contraction absorption.
Avoid stress concentration points：
Compensators should not be installed near stress concentration points (e.g., elbows, tees, etc.) of pipes to avoid adding additional stress.
Fixed bracket and guide bracket：
Install fixed brackets and guide brackets in appropriate positions on both sides of the compensator to ensure that the compensator only moves in the intended direction and prevents lateral displacement or torsion.
Pre-stretched or compressed (if necessary)：
For compensators requiring "cold tightening", appropriate pre-stretching or compression is performed at installation according to design requirements to achieve optimal compensation at operating temperatures.
Stay away from the vibration source：
Try to install the compensator away from mechanical equipment or other vibration sources to reduce the impact of mechanical vibration on the compensator.
Easy to overhaul：
The installation location should consider the convenience of future maintenance, and choose a place that is easily accessible and has sufficient operating space.
Direct buried compensator：
If it is a directly buried compensator, special attention should be paid to its corrosion resistance and compression resistance, and appropriate backfill materials and waterproofing measures should be taken.
Valve Installation Position Specification
Easy to operate and monitor：
The valve should be installed in a position that is easy to operate and monitor, ensuring that the staff can easily perform switching operation and status check.
Close to the control point：
Valves are usually installed near control points where parameters such as flow, pressure, etc. need to be adjusted or cut off to quickly respond to process requirements.
Avoid high temperature areas：
Try not to install the valve in a high temperature area unless the valve itself has high temperature resistance characteristics, which may affect the life of the seal and other components.
Prevent water hammer effect：
To avoid the water hammer effect (shock waves caused by quickly closing the valve), a buffer or shock absorber can be installed downstream of the valve and the opening speed can be set reasonably.
Protection from external environmental influences：
The valve should be avoided from exposure to harsh environment, such as strong wind, rain and snow, corrosive gas, etc. If necessary, protective cover or thermal insulation layer can be used to protect it.
Choice between vertical and horizontal installation：
Select vertical or horizontal installation according to specific working conditions. Some types of valves are more suitable for specific installation orientations. For example, butterfly valves are generally recommended to be installed horizontally, while globe valves are mostly installed vertically.
Easy to overhaul：
The installation location should consider the convenience of future maintenance, and choose a place that is easily accessible and has sufficient operating space.
Follow Manufacturer Guidelines：
Proper installation is ensured by strictly referring to the installation manual and technical specifications provided by the valve manufacturer.
Relationship between compensator and valve
Sequential installation: Typically, the compensator should be installed before (upstream) the valve, which protects the valve from stresses due to thermal expansion or mechanical displacement.
Spacing requirements: A certain distance should be maintained between the compensator and the valve to ensure that the compensator can be freely expanded and contracted without being restricted by the valve. The exact spacing depends on the type and specification of the compensator, as well as the layout of the piping system.
Common stent: In some cases, it is possible to share a bracket for the compensator and the adjacent valve, but it must be guaranteed that the functioning of the compensator is not negatively affected.
By following the above regulations on the installation position of compensators and valves, the stability and safety of the entire pipeline system can be effectively improved, while reducing maintenance costs and prolonging the service life of equipment. It is important to apply these guidelines flexibly according to specific engineering conditions and equipment characteristics.