172-65167MA-10 (VA1/VA3/VA4/VA5) 1 Oct 2021
6
Installation
DO NOT use for toxic, flammable or otherwise hazardous fluids.
This product is an air vent that discharges air from water piping system. Use only
for water and/or air. This product is for intended use only. Improper use may
result in such hazards as damage to the product or malfunctions that may lead to
serious accident.
Install properly and DO NOT use this product outside the recommended
operating pressure, temperature and other specification ranges.
Improper use may result in such hazards as damage to the product or
malfunctions that may lead to serious accidents. Local regulations may restrict
the use of this product to below the conditions quoted.
Use hoisting equipment for heavy objects (weighing approximately 20 kg
(44 lb) or more).
Failure to do so may result in back strain or other injury if the object should fall.
Take measures to prevent people from coming into direct contact with
product outlets.
Failure to do so may result in burns or other injury from the discharge of fluids.
Do not use excessive force when connecting threaded pipes to the
product.
Over-tightening may cause breakage leading to fluid discharge, which may
cause burns or other injury.
Installation, inspection, maintenance, repairs, disassembly, adjustment and valve
opening/closing should be carried out only by trained maintenance personnel.
1. Before installation, be sure to remove all protective seals.
2. Before installing the product, open the inlet valve and blow out the piping to
remove any piping scraps, dirt and oil. Close the inlet valve after blowdown.
3. This product must be installed vertically, with the inlet at the bottom and the outlet
at the top, and should be inclined no more than 5° horizontally and front-to-back
(Figure 2).
4. Install the product at a point where air is likely to collect, such as a bend in the
piping.
5. Install the product so that the outlet pipe reaches a drainage vessel or ditch. Make
sure the end of the pipe is above the waterline, so that dirt and water cannot be
sucked up by vacuum when the system shuts down (Figure 1).
6. Inlet piping with no horizontal portion is recommended for water/air displacement.
If there is a horizontal portion, make the pipe diameter of the horizontal portion
larger than the vertical portion or make the horizontal portion as short as possible.
7.
Make sure the inlet piping diameter is at least as large as the product’s inlet
diameter.
8. Installation of an isolation valve just before the product
’s main connection is
recommended as it enables maintenance during operation. A full-bore ball valve is
recommended.
9. Make sure to take measures to prevent foreign matter from flowing into the
product.
10. This is a rapid initial air vent for quickly venting large amounts of air at startup
only. If air venting is necessary during system operation, install an automatic air
vent as well.
If there is a problem, determine the cause using the “Troubleshooting” section in this
manual.
WARNING
CAUTION
