S4 Duct & Accessories
Gent S4-34760-28 2.8m Venturi Duct Tube

- Length
- 2800 mm
- Weight
- 1,2 Kg
- Material
- aluminium
- Air duct diameter range
- 1400 mm to 2700 mm
- Tube length for diameter
- 2800 mm (for air duct diameter 1400 mm to 2700 mm)
- Mounting note
- For systems with a tube length of more than 600 mm the Venturi tube must be about 30 mm longer as the diameter of the air duct.
Overview
What it is and how it fits the system.
The Gent S4-34760-28 is a 2.8m venturi tube for the S4-34760 Duct Smoke Sensor / Venturi-Air Duct Kit, whose probe samples air in ventilation ducting to detect smoke and trigger shut-down of air-conditioning or ventilation plant. Manufactured from aluminium, it measures 2800mm long, weighs 1.2kg, and suits duct diameters from 1400mm to 2700mm.
Technical overview
The Gent S4-34760-28 is a 2.8m venturi tube for the S4-34760 Duct Smoke Sensor / Venturi-Air Duct Kit, whose probe samples air in ventilation ducting to detect smoke and trigger shut-down of air-conditioning or ventilation plant. It is manufactured from aluminium, measures 2800mm in length, weighs 1.2kg, and is designed for duct diameters ranging from 1400mm to 2700mm.
For systems requiring a tube length exceeding 600mm, the venturi tube must be approximately 30mm longer than the duct diameter to ensure proper airflow sampling. This specific length of 2800mm is calibrated for use within the stated duct diameter range, maintaining consistent performance across compatible installations.
The S4-34760-28 is compatible with the S4-34760 duct smoke sensor housing, the S-Quad Optical Sensor S4-715, and the optional mounting kit S4-34760-99 for circular and insulated ducts. It is also suitable for use with Vigilon panel and Vigilon Loop systems, with wiring details provided in the installation manual. It forms part of a family that includes shorter variants such as the 600mm S4-34760-06 and 1500mm S4-34760-15 venturi tubes.
Specifications
Full technical data for this part.
| Description | 2.8m Venturi Tube |
|---|---|
| Order code | S4-34760-28 |
| Length | 2800 mm |
| Weight | 1,2 Kg |
| Material | aluminium |
| Air duct diameter range | 1400 mm to 2700 mm |
| Tube length for diameter | 2800 mm (for air duct diameter 1400 mm to 2700 mm) |
| Mounting note | For systems with a tube length of more than 600 mm the Venturi tube must be about 30 mm longer as the diameter of the air duct. |
Specifications sourced from manufacturer documentation.
Specifications per manufacturer documentation, subject to change — E&OE. Spotted an inaccuracy? Let us know
Enhancements (optional)
Optional additions — this product works without them.
Duct Housing (Inc S Quad BASE AND 0.6M TUBE)
Part of the S4-34760 Venturi-Air Duct Kit / Duct Smoke Sensor S4-34760

S4 Optical Detector
S-Quad Optical Sensor S4-715 (S-Quad Part No. S4-715)
Mounting Bracket
Optional mounting kit for circular and insulated air ducts S4-34760-99

1.5m Venturi Tube
Sibling Venturi tube options: 600 mm S4-34760-06 and 1500 mm S4-34760-15