Description for Siemens 184-040

Powers restrictors are available in a variety of orifice sizes and connection types.External types feature:

Air filter. Threaded connection (Type 1). Barbed connection (Types 2 and 3). Color coding (Types 2 and 3). Airflow direction arrow to minimize installation errors. Airflow restrictor capacity molded (Types 2 and 3) or stamped (Type 1) on body. External restrictors are used: for one-pipe transmitters, 40 scim (11 ml/sec). when installed tubing lengths exceed maximum recommended value. and 2. for one-pipe room thermostats, 20 scim (5.5 ml/sec). with check valves to provide airflow time delays. Slow to supply, fast to exhaust. Fast to supply, slow to exhaust. for VAV vortex control. Use 80 scim (22 ml/sec) restrictor in actuator control pressure line to prevent cycling. when other air capacities, 10 scim (2.7 ml/sec), 80 scim (22 ml/sec) or 320 scim (87 ml/sec), are required to compensate for tubing size or response time.