OM/SM-DEE (CE)
13
pH by frequently comparing the test strip color
with the color chart provided in the pH test kit.
f. Record the exact amounts of water and
treatment compound used. These amounts may
be used again, if the same water sources and
compound are used in the future. However, it is
best to check the pH each time treated water is
prepared.
g. For optimum performance, use correctly treated,
distilled water.
5.7 Installation of Safety Valve
a. Installation must be performed by qualified
service personnel only.
b. The BTU/hr or lb/hr rating of this valve must
equal or exceed that of the equipment to which it
is attached
c. DO NOT use this valve on a coal or wood boiler
having an uncontrolled heat input.
d. Ensure that all connections, including the valve
inlet, are clean and free from any foreign
material.
e. Use pipe compound sparingly, or tape, on
external threads only.
f. DO NOT USE A PIPE WRENCH! Use proper
type and size wrench on wrench pads only.
g. This valve must be mounted in a vertical, upright
position directly to a clean, tapped opening in the
top of the boiler or equipment. Under no
circumstances should there be a flow restriction
or valve of any type between the safety relief
valve and the pressure vessel
h. WARNING! During operation, this valve may
discharge large amounts of steam and/or hot
water. To reduce the potential for bodily injury
and property damage, a discharge line MUST be
installed that:
1. is connected from the valve outlet with
no intervening valve and directed
downward to a safe point of discharge.
2. allows complete drainage of both the
valve and the discharge line
3. is independently supported and securely
anchored so as to avoid applied stress
on the valve.
4. is as short and straight as possible.
5. terminates freely to atmosphere where
any discharge will be clearly visible and
is at no risk of freezing.
6. terminates with a plain end that is not
threaded.
7. is constructed of a material suitable for
exposure to temperatures of 375º F or
greater.
8. is, over its entire length, of a size equal
to or greater than the valve outlet.
i. Use only schedule 40 pipe for discharge. (Do
not use schedule 80, extra strong pipe or
connections). DO NOT CAP, PLUG, OR
OTHERWISE OBSTRUCT DISCHARGE PIPE
OUTLET!
j. See appropriate ASME Boiler and Pressure
Vessel Code for additional installation
instructions.
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