But all relief valves have similar warnings and instructions
so take the time to read the tag on your boiler relief valve. this
could save your life.
CONBRACO
DO NOT REMOVE THIS TAG
I-4868-00
INSTALLATION INSTRUCTIONS 10-400 SERIES
1) Use of this valve for any other purpose or media
places all responsibility upon user.
2) Installation must be performed by qualified service
personal only.
3) The Btu/Hr rating of this valve must equal or exceed
that of the equipment to which it is installed.
4) DO NOT use this valve on a coal or wood boiler having
an uncontrolled Btu heat input.
5) Insure that all connections, including the valve
inlet, are clean and free from any foreign material.
6) Use Pipe compound sparingly, or tape, on external
threads only.
7) DO NOT USE A PIPE WRENCH! Use proper type and size
wrench on wrench pads only.
8) This valve must be mounted in a vertical, upright
Position directly to a clean, tapped opening in the top of the
equipment. Under no circumstances should there be a flow restriction
or valve of any type between the safety relief valve and the
pressure vessel.
9) WARNING! During operation, this valve may discharge
large amounts of steam and/or hot water. Therefore, to reduce the
potential for bodily injury and property damage, a discharge line
MUST be installed that:
a. is connected from the valve outlet with no
intervening valve and directed downward to a safe point of
discharge.
b. Allow complete drainage of both the valve and the
discharge line.
c. Is independently supported and securely anchored so
as to avoid applied stress on the valve.
d. Is as short and straight as possible.
e. Terminates freely to atmosphere where any discharge
will be clearly visible and is at no risk of freezing.
|f. Terminates with a plain end which is not threaded.
g. Is constructed of a material suitable for exposure to
temperatures of 375F or greater.
h. Is, over it's entire length, of a pipe size equal to
or greater than that of the valve outlet. Use only schedule 40 pipe
for discharge. (DO NOT CAP, PLUG, OR OTHERWISE OBSTRUCT DISCHARGE
PIPE OUTLET!
10) See appropriate ASME Boiler and pressure vessel Code
for additional installation instructions.