TLV PN-COSR-16, Инструкция по эксплуатации

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172-65604MA-00 (
PN-COSR
Pneumatic Control Valve) 10 Sep 2014
6
4 Precautions for the Installation of Additional Fittings Before or After the
PN-COSR-16
In order to ensure stable steam flow, the piping upstream and downstream of the
PN-
COSR-16
must be straight runs. If the
PN-COSR-16
is installed either directly before or
after an elbow or control valve, unevenness in steam flow may result in chattering and
unstable pressure. To ensure stable steam flow, it is recommended that the
PN-COSR-
16
be installed on straight runs of piping, as illustrated below.
1) Inlet (primary side) of the
PN-COSR-16
(d = pipe diameter)
Maintain a straight piping run
of
10 d or more when a
manual valve, a strainer or an
elbow, etc. is installed.
(Example: if nominal size is 25
mm (1 in), have 250 mm (10
in) or more)
PN-COSR
Valve,
strainer,
elbow, etc.
10 d or more
PN-COSR
Valve,
strainer,
elbow, etc.
Less than
10 d
Maintain a straight piping run of
30 d or more when an
motorized valve (on-off valve)
is installed.
(Example: if nominal size is 25
mm (1 in), have 750 mm (30
in) or more)
PN-COSR
Motorized
Valve
30 d or more
PN-COSR
Motorized
Valve
Less than
30 d
Maintain a straight piping run of
30 d or more when a pressure
reducing valve is installed.
(Two-stage pressure
reduction)
(Example: if nominal size is
25 mm (1 in), have 750 mm
(30 in) or more)
PN-COSR
Pressure
Reducing
Valve
30 d or more
PN-COSR
Pressure
Reducing
Valve
Less than
30 d
2) Outlet (secondary side) of the
PN-COSR-16
Maintain a straight piping run
of
15 d or more when a
manual valve, a strainer or an
elbow, etc. is installed.
(Example: if nominal size is 25
mm (1 in), have 375 mm (15
in) or more)
PN-COSR
Valve,
strainer,
elbow, etc.
15 d or more
PN-COSR
Valve,
strainer,
elbow, etc.
Less than
15 d
Maintain a straight piping run
of
30 d or more when a
safety valve is installed.
(Example: if nominal size is 25
mm (1 in), have 750 mm (30
in) or more)
PN-COSR
Safety
Valve
30 d or more
PN-COSR
Safety
Valve
Less than
30 d
Maintain a straight piping
run of
30 d or more when a
control valve or an
automated valve (on-off
valve) is installed.
(Example: if nominal size is
25 mm (1 in), have 750
mm (30 in) or more)
PN-COSR
30 d or more
Control or
Automated
Valve
PN-COSR
Less than
30 d
Control or
Automated
Valve