The Simplex 4098-9855 is a 24-inch plastic sampling tube for duct smoke detection. First, the tube mounts into the duct housing and runs across the airflow. Then, sampling holes capture a slice of duct air. As a result, the housing’s sensor reads the duct continuously.
Simplex 4098-9855 Length and Fit
The 24-inch length suits ducts from 13 in. to 23 in. (330 mm to 584 mm) wide. Specifically, the tube must span the full duct width for accurate sampling per NFPA 72 guidance. In addition, the plastic body resists corrosion in typical commercial HVAC service.
Use with Simplex Duct Housings
Pair the 4098-9855 with the matching Simplex duct housing. Then, install the housing on the duct exterior and feed the sampling tube through the duct wall. Also, install a separate exhaust tube on the housing’s discharge port. Furthermore, follow the Simplex duct-detector application manual for sample-hole alignment.
When to Order This Tube
Choose the 4098-9855 when the duct measures 13 in. to 23 in. wide. Then, select a longer tube for wider ducts and a shorter tube for narrower ducts. Therefore, sizing the tube to the duct keeps duct-detector performance within the manufacturer’s airflow envelope.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 0.21 lbs |
|---|---|
| Dimensions | 24 × 1 × 0.9 in |
| Condition | New |
| Manufacturers | Simplex |
| Part Type | Pull Station |
