The Carrier HR81LG020 Flow Switch is a high-precision OEM replacement part designed for critical fluid monitoring in industrial and commercial HVACR systems

OEM Compatibility: Exact drop-in replacement for Daikin-McQuay equipment

Common Technician Questions: Can I use this 125 PSI valve on a 150 PSI rated tank

Slow Opening Operation: Regulates the initial gas flow to ensure quiet and reliable ignition across the primary burners

Carrier TH70400528 DPTA Cable 321142-301 The Carrier HR81LG020 Flow SwitchThe Carrier TH70400528 DPTA Cable is a critical communication component designed specifically for integration within Carrier high efficiency HVAC systems. This high integrity wire harness is engineered to facilitate precise data transmission between the Digital Pressure Transducer Assembly (DPTA) and the main system controller. As a direct OEM replacement part, it ensures low resistance connectivity and maintains the signal integrity required for