172-65392MA-08 (VS1C) 25 Nov 2021
7
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 accidents.
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 which may lead to serious accidents. Local regulations may restrict
the use of this product to below the conditions quoted.
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.
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 in a location where air is likely to collect, such as a bend in the
piping.
5. Install outlet piping leading to a drainage vessel or ditch. Make sure the end of the
pipe is above the waterline, so that dirt and water can not 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 l
arge as the product’s inlet
diameter. For the inlet connection especially for the products with a nominal
diameter of 15 mm (
1
/
2
in), use a pipe/fitting, etc. with an inner diameter of at least
16 mm (
5
/
8
in), such as a schedule 40 pipe nipple with a nominal diameter of 15
mm (
1
/
2
in). A smaller pipe may prevent water/air displacement.
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.
If there is a problem, determine the cause using the “Troubleshooting” section in this
manual.
Figure 1
Figure 2
Tolerance Angle for
Installation: 5°
WARNING
CAUTION
Make sure the end
of the pipe is above
the waterline.
