ECR International Columbia MCC II Series, Инструкция по установке, эксплуатации и обслуживанию

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7
6 - CONNECTING SUPPLY AND RETURN PIPING
RELIEF VALVE
DISCHARGE
LINE
Check local
codes for
maximum
distance
from fl oor
or allowable
safe point of
discharge
.
WARNING
Burn or Scald Hazard. Discharge line shall be installed to relief valve outlet connection to avoid
burns, scalding, or water damage due to discharge of steam and/or hot water during operation.
Discharge line shall:
connect to relief valve outlet and piped down to safe point of disposal. Check local codes for •
maximum distance from fl oor or allowable safe point of discharge;
be of pipe size equal to or greater than that of the relief valve outlet over the entire length of •
discharge line;
have no intervening shutoff valve between safety relief valve and discharge to atmosphere (do
•
not plug or place any obstruction in discharge line;
terminate freely to atmosphere where any discharge will be clearly visible and at no risk of
•
freezing;
allow complete drainage of the valve and the discharge line;
•
be independently supported and securely anchored to avoid applied stress on the relief valve; •
be as short and straight as possible; •
terminate with plain end (not threaded); •
be constructed of material suitable for exposure to temperatures of 375°F (191°C); or greater. •
Refer to local codes and appropriate ASME Boiler and Pressure Vessel Code for additional
installation requirements.
!
Figure 2 - Safety Relief Valve