A2-13 Compressor Cut Valve for Bock FK / Bitzer 4N Bus AC Compressor

The A2-13 is a universal compressor service cut-off valve specially engineered for both Bock FK and Bitzer 4N series heavy-duty bus air conditioner compressors. Installed on the compressor suction and discharge ports, it is used to isolate the refrigerant circuit, enabling safe maintenance, repair and overhaul operations without full refrigerant discharge, greatly improving on-site service efficiency.

Forged from high-quality corrosion-resistant aluminum alloy and processed with precision CNC machining, this cut valve features excellent high-pressure resistance, tight sealing and long service life. It maintains stable and leak-free performance under long-term high-pressure refrigerant circulation and extreme temperature fluctuations, effectively reducing refrigerant leakage risks during both daily operation and maintenance procedures.

Its universal compatibility with both Bock FK and Bitzer 4N compressor models helps fleet operators and repair workshops reduce spare parts inventory pressure and simplify procurement management. It is a standard replacement part for routine bus AC system maintenance and professional compressor overhaul.

With 39 years of professional expertise in the bus HVAC industry, TCHAIN supplies 100% quality-inspected compressor valve parts that are fully compatible with most 6-14m diesel buses, school buses, shuttle buses and long-distance coaches equipped with Bock FK or Bitzer 4N series compressors. We provide competitive wholesale pricing, comprehensive technical support and fast global delivery to minimize your fleet maintenance downtime.

Applications

• Bock FK series bus AC compressors

• Bitzer 4N series bus AC compressors

• Heavy-duty city bus AC system routine maintenance

• School bus compressor overhaul & repair service

• Commercial shuttle bus AC system servicing

• Long-distance intercity coach HVAC maintenance