Emerson Anderson Greenwood 200 Series Bedienings- en veiligheidsinstructies - Pagina 3
Blader online of download pdf Bedienings- en veiligheidsinstructies voor {categorie_naam} Emerson Anderson Greenwood 200 Series. Emerson Anderson Greenwood 200 Series 4 pagina's. Pilot operated safety relief valves
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Anderson Greenwood Pilot oPerated safety relief valves
Operating and Safety inStructiOnS
6 remote pressure piCk-up
When remote pressure sensing is specified, the
valve will have a red plastic plug with a warning
tag installed in the pilot pressure sensing
port. the tag reads 'WarNiNG: tHis valve is
eQUiPPed for iNstallatioN WitH reMote
PressUre PiCK-UP'. remove the plug and
connect the remote sense line to this port.
remote pressure pick-up piping must be
installed in accordance with the following
requirements:
For series 200, 400, 800, 5100 and 5200 valves
remote pressure pick-up piping up to 100 feet
(30 m) in length must have an inside diameter
not less than 0.245" (6 mm), the inside diameter
of ⅜" x 0.065" wall (10 mm x 2 mm wall)
seamless tubing. for lengths greater than
100 feet (30 m), larger tubing or pipe should be
used.
For series 90, 500, and 900 valves
remote pressure pick-up piping up to 20 feet
(6 m) in length must have an inside diameter not
less than 0.430" (10 mm), the inside diameter of
½" x 0.035" wall (12 mm x 1 mm wall) seamless
tubing. for lengths greater than 20 feet (6 m),
larger tubing or pipe should be used.
For series 700 valves
remote pressure pick-up piping up to 10 feet
(3 m) in length must have an inside diameter not
less than 0.245" (6 mm), the inside diameter of
⅜" x 0.065" wall (10 mm x 2 mm wall) seamless
tubing. for lengths greater than 10 feet (6 m),
1" (25 mm) or larger pipe should be used. the
remote sense line must be self draining and
insulated to minimize condensate formation and
freezing potential.
For series 9000 valves
(remote pressure pick-up is standard on all
vacuum and combination valves.)
for 6" (150 mm) and smaller valves, remote
pressure pick-up piping up to 20 feet (6 m) in
length must have an inside diameter not less
than 0.430" (10 mm), the inside diameter of ½"
x 0.035" wall (12 mm x 1 mm wall) seamless
tubing. for lengths greater than 20 feet (6 m),
larger tubing or pipe should be used.
for 8" (200 mm) and larger valves, remote
pressure pick-up piping for lengths up to
20 feet (6 m) must have an inside diameter not
less than 0.824" (20.9 mm), the inside diameter
of ¾" schedule 40 pipe. for lengths greater
than 20 feet (6 m), larger pipe should be used.
ensure that the pilot sensing port is within the
system protected by the main valve.
a block valve for shut off in the remote pilot sense
line is not recommended. a closed block valve
in the remote sense line renders the safety valve
inoperative. if one is used, it must be opened
before pressurizing the system or opening the
isolating block valve under the main valve.
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