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26
Worked example
The
example
below
is
for
a
G
1/2
temperature
relief
valve
with
a
discharge
pipe
(D2)
h
aving
4
no.
elbows
and
length
of 7m from the tundish to the point of discharge.
From Table 1
•
Maximum
resistance
allowed
for
a
straight
length
of
22mm
copper
discharge
pipe
(D2)
from
a
G
1/2
temperature
relief valve is 9.0m
•
Subtract
the
resistance
for
4
no.
22mm
elbows
at
0.8m
each
=
3.2m
•
Therefore,
the
maximum
permitted
length
equates
to
5.8m
•
5.8m
is
less
than
the
actual
length
of
7m,
therefore
calculate
the
next
largest
size
•
Maximum
resistance
allowed
for
a
straight
length
of
28mm
pipe
(D2)
from
a
G1/2
temperature
relief
valve
equates
to 18m.
•
Subtract
the
resistance
for
4
no.28mm
elbows
at
1.0m
each
=
4m
•
Therefore
the
maximum
permitted
length
equates
to
14m
•
As
the
actual
length
is
7m,
a
28mm
(D2)
copper
pipe
will
be
satisfactory.
Содержание ModuSat FS 150
Страница 1: ...1 ModuSat FS Unit Installation Manual...
Страница 14: ...14 2 2 Dimensions ModuSat FS 80 150...
Страница 15: ...15 ModuSat FS 200...
Страница 16: ...16 ModuSat FS 300 400...
Страница 27: ...27 Optional Way to Discharge P T Valve...
Страница 35: ...35...