Application Cases of Refrigerant Pipeline System Maintenance Valve
Project Overview
High-rise residential-commercial apartments feature a multi-split central air conditioning system per unit. Outdoor units are mounted on the building's exterior facade, with multiple indoor units installed inside each unit. A Maintenance Valve is added to the indoor refrigerant branch line for future debugging, leak detection, refrigerant topping-up, and troubleshooting.
Project Pain Points
The outdoor unit is mounted externally on the building facade. In the event of a refrigerant leak or low charge, locating the leak and recharging requires high-altitude work using safety ropes or suspended platforms, posing significant safety risks. Additionally, obtaining property management approval for exterior wall construction in apartment buildings involves complex procedures, further limiting operational feasibility.
Suspected pipe leak in this unit. Traditional methods require working at the outdoor unit, making it impossible to perform localized pressure testing and leak detection indoors. Locating the leak is time-consuming.
High-altitude exterior work is restricted by property management, with construction often prohibited during certain hours. This leads to long wait times for repairs after a malfunction occurs.
Solution
Indoor refrigerant branch lines are equipped with indoor Maintenance Valve, with service ports located inside the indoor access panel or shaft. For unit-specific faults, pressure testing, leak detection, and refrigerant charging are performed entirely indoors, eliminating the need to access outdoor units on external walls. This approach avoids risks associated with high-altitude work and regulatory approval hurdles.