Refrigerant Piping Systems

Refrigerant Piping Systems are critical components in DX air conditioning, VRF/VRV systems, split units, and refrigeration plants. These piping networks circulate refrigerant between compressors, condensers, expansion devices, and evaporators, ensuring efficient heat transfer and system performance.

We primarily use copper pipes for refrigerant systems, including both hard drawn and soft copper. Pipes are selected based on system requirements, with appropriate wall thickness for operating pressures, and are installed with proper insulation and UV protection for outdoor applications.

Nitrogen purging during brazing prevents internal oxidation of copper pipes, which can form copper oxide scale. This scale can circulate through the system, causing compressor damage, blocked expansion devices, and reduced system efficiency. Nitrogen purging ensures clean, oxide-free internal surfaces.

Yes, we offer comprehensive Annual Maintenance Contracts (AMC) for refrigerant systems including leak inspection, joint inspection, insulation integrity check, support alignment verification, oil return performance review, and pressure monitoring to ensure long-term system reliability.

Oil traps are installed in vertical risers to ensure proper oil return to the compressor. Refrigerant carries oil through the system, and in vertical sections, oil can drain back. Traps collect oil and help it travel upward with the refrigerant, preventing compressor failure due to oil starvation.

Deep vacuuming removes moisture and non-condensables from refrigerant piping after installation. Using a vacuum pump, we achieve micron-level vacuum, verified by micron gauges. This process ensures all moisture is removed, preventing ice formation, acid formation, and system damage during operation.

Yes, we specialize in retrofitting existing refrigerant systems including refrigerant leakage repair, copper pipe replacement, joint re-brazing, oil trap correction, improper slope correction, and insulation replacement. We also perform compressor failure root-cause analysis and piping correction.

Signs include refrigerant leaks (visible oil stains at joints), compressor oil level issues, excessive noise from refrigerant flow, capacity loss, high pressure trips, frosting on suction lines (indicating improper superheat), and premature compressor failure.

VRF/VRV system piping is sized strictly as per manufacturer guidelines, considering equivalent length, vertical rise, Y-branch placement, and refrigerant charge. We ensure proper velocity for oil return, correct pipe diameters for each section, and compliance with maximum length and height difference limitations.

Our installation service covers complete copper pipe installation (hard drawn and soft), silver brazing with nitrogen purging, Y-branch installation for VRF systems, oil trap fabrication, riser installation, pipe supports and clamps, refrigerant line insulation, UV-protected wrapping, pressure testing, deep vacuuming, and commissioning support.