Siemens Building Technology 184-114 Restrictor

For veteran HVAC contractors managing legacy building automation systems, the Siemens Building Technology 184-114 Restrictor is a critical component for stabilizing pneumatic control circuits. This Type 3 Tee Restrictor is engineered to deliver a precise 40 scim flow rate (11 ml/sec) at a standard 22 psi calibration pressure. Designed specifically for integration with one-pipe pneumatic transmitters and receiver-controllers, it ensures the steady-state air consumption required for accurate signal transmission over long tubing runs. The 0.0074-inch orifice is protected by an internal air filter to prevent clogging from line contaminants, preserving the integrity of the HVAC pneumatic system.

The 184-114 features a green-coded plastic body for immediate visual identification in the field and includes a molded airflow direction arrow to eliminate installation errors. These polyethylene tubing restrictors utilize a barbed connection optimized for 1/4-inch O.D. lines, providing a secure, leak-free fit in demanding mechanical environments. When troubleshooting response lag or hunting in pneumatic actuators, replacing fouled restrictors with this 40 scim kit restores the high-precision bleed rate necessary for optimal proportional control.

• Precise 40 scim Capacity: Engineered for one-pipe transmitters to maintain 100% flow capacity at 22 psi.
• Barb-Style Integration: Designed for rapid, secure connection to 1/4-inch O.D. plastic tubing.
• Integrated Filtration: Internal filter shields the 0.0074 orifice from particulate matter in the air supply.
• Visual Verification: Green color coding and molded flow arrows ensure correct orientation and sizing during field service.
• System Stability: Essential for preventing cycling in VAV vortex control and large-scale pneumatic loops.

Which tubing size is compatible with the Siemens 184-114?
This restrictor is specifically designed for 1/4-inch O.D. polyethylene tubing using the integrated barbed tee connections.

Can this be used for room thermostats requiring 20 scim?
No, the 184-114 is a 40 scim green-coded restrictor. For standard room thermostats, the 20 scim yellow-coded 184-113 or 184-116 models are typically required to avoid excessive air consumption.

How do I verify the airflow direction during installation?
The plastic body features a molded arrow; the air must flow in the direction of the arrow to ensure the internal filter protects the restrictor orifice effectively.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.