Description
Edwards SD-T18 18-inch Sampling Tube
The Edwards SD-T18 18-inch Sampling Tube is engineered for use in duct smoke detection systems requiring accurate air sampling in medium-width ducts. Designed specifically for ducts up to 18 inches wide, this tube allows smoke detectors to monitor airflow effectively and detect smoke particles before they spread throughout the building.
Because the tube channels airflow directly into the sensing chamber, it plays a vital role in ensuring early warning and code compliance in HVAC-based fire detection systems.
Accurate Sampling in Medium-Sized Ducts
The SD-T18 features multiple precisely spaced holes that draw a uniform air sample from the full width of the duct. This ensures that the connected detector receives representative airflow, improving its ability to detect smoke at the earliest stages.
Inconsistent airflow can delay smoke detection in ducts, especially in systems with moderate to high velocities. However, this tube’s perforation design helps maintain stable detection performance even when airflow fluctuates. As a result, the system becomes more reliable in real-world operating conditions.
Reliable Build and Fast Installation
Constructed from rigid, corrosion-resistant material, the SD-T18 performs well in demanding HVAC environments. It resists vibration, moisture, and temperature swings commonly found in commercial systems. This durability supports long service life and consistent sampling performance over time.
Installation is simple and efficient. The tube inserts directly into the Edwards duct detector housing, and a sealed end cap is included to prevent pressure loss and bypass airflow. Because of its compatibility with factory hardware, no special tools or modifications are required during setup.
Perfect Fit for Standard Commercial Applications
The SD-T18 is ideal for office spaces, schools, healthcare facilities, and other commercial buildings with standard ductwork. It strikes the right balance between compact size and functional coverage, making it a practical choice for contractors and system designers.
The Edwards SD-T18 18-inch Sampling Tube delivers consistent, accurate airflow sampling for medium-width duct installations. Its durable construction, easy installation, and reliable performance make it a valuable part of any Edwards duct smoke detection setup. For systems that demand both efficiency and compliance, the SD-T18 offers a smart, field-proven solution.





Reviews
There are no reviews yet.