the muffler should be installed in the discharge line as close to the compressor as possible

While some Robertshaw orifices are universal

while the normally open port uses a threaded NPT fitting for rigid or adapter-based connections

BM000S is the cross for BM000

and zoning applications where accurate airflow regulation is required

Siemens Building Technology 274-03080 Control Valve Assembly 320788-703 the muffler should be installedThe Siemens 274 03080 Control Valve Assembly is a heavy duty solution for precise hydronic flow control in commercial HVAC systems. This 2 way normally closed modulating valve features a 2 inch NPT connection and is engineered with a 40 Cv linear flow characteristic to ensure stable regulation in air handling units and heat exchangers. Designed for seamless integration, the Siemens actuator accepts both 0 10 VDC and 4 20 mA control signals, operating