Ace Heating Solutions Mini-Pack, Инструкция по эксплуатации и техническому обслуживанию

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VACUUM BREAKER INSTALLATION
Figure 1 – Standard Vertical Installation Pipe as shown if possible for a preventative measur
e. If the outlet is exposed it can become fouled
with dust and dirt. Upon operation this contami
nation can prevent the vacuum breaker from
resealing. Figure 2 – High Temperature or Hazardous Chemical Serv
ice
Pipe as shown for safety reasons. After undeterminabl
e amount of time the vacuum breaker will fail.
Having the outlet piped to a safe location eliminates a safety hazard. Although the installation shown is vertical with outlet on the bottom,
this should be done regardless of the installation
orientation. Figure 3 – High Temperature Installation Piping the vacuum breaker as shown can eliminat
e the need for special high temperature seals.
The temperature at the vacuum breaker varies
depending the steam line temperature. The pigtail
should be sized to have a flow area equal or great
er than that of the vacuum breaker used.
Figure 4 - Engaged Length When piping in the vacuum breaker, attenti
on should be given to the engaged length ”E”.
1.
The vacuum breaker should never be installed su
ch that the screen is in the flow path. In
instances of high velocities the correct oper
ation can be disrupted as well as damage to the
vacuum breaker.
2.
Vacuum breakers should be installed in pipe
couplings to prevent damage on installation.
An example of this would be installation in
the short side of a pipe tee where the screen
could be crushed.
THE JOHNSON CORPORATION
805 Wood Street, Three Rivers, Michigan 49093 USA tel: 616.278.1715 fax: 616.279.5980 www.joco.com
V
acuum Br
eak
ers - page 2
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V
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C
UUM BRE
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Typical Installations of Johnson V
acuum Breakers
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