172-65391MA-08 (VS1A) 7 Oct 2021
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Contents
Introduction ....................................................................... 1
Safety Considerations ....................................................... 2
Features ............................................................................ 4
Operation .......................................................................... 4
Specifications .................................................................... 5
Configuration ..................................................................... 5
Installation ......................................................................... 6
Maintenance ...................................................................... 7
Disassembly / Reassembly ............................................... 8
Troubleshooting .............................................................. 10
TLV EXPRESS LIMITED WARRANTY ........................... 11
Service ............................................................................ 13
Introduction
Thank you for purchasing the TLV rapid initial air vent.
This product has been thoroughly inspected before being shipped from the factory.
When the product is delivered, before doing anything else, check the specifications
and external appearance to make sure nothing is out of the ordinary. Also be sure to
read this manual carefully before use and follow the instructions to be sure of using
the product properly.
The rapid initial air vent operates by rapidly discharging the initial air when supplying
water to piping, then closing upon completion of discharge. During operation, once it
has closed, the air vent remains closed as long as there is internal pressure. When
draining piping, the rapid initial air vent automatically opens to introduce air and
remove water easily.
If detailed instructions for special order specifications or options not contained in this
manual are required, please contact TLV for full details.
This instruction manual is intended for use with the model(s) listed on the front cover.
It is necessary not only for installation but for subsequent maintenance,
disassembly/reassembly and troubleshooting. Please keep it in a safe place for
future reference.