Fenwal 06-129500-002 Sampling Tube

The Fenwal 06-129500-002 is a professional-grade 24-inch duct smoke detector sampling tube designed for high-accuracy air monitoring in HVAC plenum systems. As a critical component for fire alarm system maintenance, this tube facilitates the transport of air from within the duct to the detector's sensing chamber. Engineered as a direct replacement for L-306-1 and ST-1.5, it ensures seamless compatibility with legacy and modern duct smoke detector parts. This air duct sampling pipe maintains a precise pressure differential to detect combustion particles effectively across air velocities ranging from 500 to 4,000 FPM.

For veteran technicians, the ST-2.0 equivalent 24-inch length is ideal for ducts between 1 and 2 feet in width. Compliance with NFPA regulations requires the sampling tube installation to have inlet holes oriented directly into the airflow to maximize smoke capture. Constructed for industrial-grade durability, the Fenwal 06-129500-002 sampling tube integrates with DH-2000 series housings and SmartOne intelligent detectors, providing reliable performance in commercial and residential air handling units.

• Universal Compatibility: Serves as the direct 24-inch replacement for discontinued ST-1.5 and L-306-1 models.
• Optimized Airflow: Precision-perforated design ensures consistent air sampling in high-velocity systems up to 4,000 FPM.
• Rugged Construction: Built to withstand the environmental stressors of commercial HVAC plenums without degradation.
• Efficient Integration: Compatible with both photoelectric (PSD-7152) and ionization (CPD-7052) sensing heads within DH-2000 housings.

What is the maximum duct width for a 24-inch sampling tube?
This 24-inch tube is typically specified for HVAC ducts with widths ranging from 12 to 24 inches. For optimal performance, the tube should extend at least 2/3 across the duct width.

Does this include the red end cap?
Standard replacement sampling tubes are designed to be sealed at the far end; always verify that the end plug is securely in place to maintain the required pressure differential for the detector.

Can this tube be cut to fit smaller ducts?
Yes, technicians can field-cut the tube to the specific interior dimensions of the housing, provided the end remains properly sealed to ensure air is pulled through the sampling ports.

This item is not eligible for free shipping.

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.