172-65167MA-10 (VA1/VA3/VA4/VA5) 1 Oct 2021
1
Contents
Introduction ....................................................................... 1
Safety Considerations ....................................................... 2
Features ............................................................................ 4
Operation .......................................................................... 4
Specifications .................................................................... 5
Configuration ..................................................................... 5
Installation ......................................................................... 6
Maintenance ...................................................................... 8
Disassembly/Reassembly ................................................. 9
Troubleshooting .............................................................. 11
TLV EXPRESS LIMITED WARRANTY ........................... 12
Service ............................................................................ 14
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.
This rapid initial air vent is for use on water-bearing pipes, and operates by
rapidly discharging the air initially present when supplying water to piping,
then closing upon completion of discharge. During operation, once it has
closed, the rapid initial air vent remains closed as long as there is internal
pressure. If air venting is necessary during system operation, install an
automatic air vent as well. When draining piping, the rapid initial air vent
automatically opens to introduce air and remove water easily.
Its simple, compact construction, with no hinges or levers and only one
moving part, the float, provides trouble-free operation and long service life.
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.
