Vesda VSP-974 is the replacement rotary valve for the VESDA-E VEA multichannel aspirating smoke detector. The VEA draws air from individual sampling points through microbore tubes, and the rotary valve is the component that switches between those channels.
When smoke reaches the Fire 1 threshold, the detector uses the rotary valve to scan the sampling locations in sequence and identify which point or points have the alarm event. In Pre-Alarm the user can also start a smoke scan of all sampling points to help locate the source. The rotary valve is one of the VEA field replaceable parts, together with the filter, smoke sensor module and pump, which keeps down time short during maintenance.
Specifications
| Part |
VESDA-E VEA rotary valve |
| Fits |
VESDA-E VEA detectors (VEA-040 series) |
| Function |
Sequential scan of sampling locations to locate the alarm point |
| Service |
Field replaceable |
| Quantity |
1 |
Related models
-
VSP-972: VEA filter cartridge
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VSP-976: VEA-040-A10 fascia with 3.5 in. display
-
VEA-040-A00: VESDA-E VEA detector
Documents
FAQ
What does the rotary valve do in a VEA detector?
After a Fire 1 alarm, the VEA scans the sampling locations one by one through the rotary valve to identify which sampling point or points have the fire alarm event. The user can also start a smoke scan of all sampling points during Pre-Alarm.
Which detector does VSP-974 fit?
It is the rotary valve spare part for the VESDA-E VEA detector, such as the VEA-040.
Is the rotary valve field replaceable?
Yes. Xtralis lists the filter, smoke sensor module, pump and rotary valve as field replaceable components to reduce down time.
What other VEA spare parts are there?
VSP-970 mounting bracket, VSP-971 smoke sensor module, VSP-972 filter, VSP-973 pump, VSP-975 fascia with LEDs and VSP-976 fascia with 3.5 in. display.
