9
5 - CONNECTING SUPPLY & RETURN PIPING
Figure 1 - Safety Relief Valve
Check local codes
for maximum
distance from floor
or allowable safe
point of discharge.
WARNING
Burn and scald hazard. Safety relief valve could
discharge steam or hot water during operation.
Install discharge piping per these instructions. Failure
to follow these instructions could result in death or
serious injury.
!
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 floor 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.
P/N 240011107, Rev. D [04/04/2017]
Safety Relief Valve
Discharge Line
Floor
