8
SYSTEM PIPING
Check local codes
for maximum
distance from
floor or other
allowable safe
point of discharge
SAFETY VALVE
DISCHARGE
PIPING
6" Above Floor
Figure 2 - Safety Valve
Safety Relief Valve Installation instructions:
•
Connect to safety valve outlet. Piped down to safe
point of disposal. Check local codes for maximum
distance from floor or allowable safe point of discharge.
•
Pipe size be of equal to or greater than of safety valve
outlet over entire length of discharge line.
•
Have no intervening shutoff valve between safety valve
and discharge to atmosphere. Do not plug or place any
obstruction in discharge line.
•
Size and arrange discharge piping to avoid reducing
safety relief valve relieving capacity below minimum
relief valve capacity stated on rating plate.
•
Terminate freely to atmosphere where any discharge
will be clearly visible and at no risk of freezing.
•
Allow complete drainage of valve and discharge line.
•
Install safety valve with spindle in vertical position.
WARNING
Burn and scald hazard. Safety relief valve could
discharge steam or hot water during operation.
Install discharge piping per the following instructions.
Failure to follow these instructions could result in death
or serious injury .
!
•
Do not install shutoff valve between boiler and safety
valve.
•
Install union, if used, close to safety relief valve outlet.
•
Install elbow(s), if used, close to safety relief valve
outlet and downstream of union (if used)
•
Support safety valve discharge piping.
•
Run pipe as short and straight as possible to location
protecting user from scalding and properly drain piping.
•
Terminate with plain end, not threaded.
•
Size and arrange discharge piping to avoid reducing
safety relief valve relieving capacity below minimum
relief valve capacity stated on rating plate.
•
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.
PN 14683003 Rev. O [10/01/2021]
