Sapag Safety Valves Series 8400/8500/8490/8590
Installation and Maintenance Instructions
Emerson reserves the right to change the contents without notice
page 3
Ordering Spare Parts
When ordering spare parts, the valve size, style and assembly number and/or serial number should
be given together with set pressure, part name and reference number from page 2. The valve
serial number is shown on the valve nameplate. Spare parts may be ordered from any Emerson
Valves & Controls Regional Sales Office or Representative.
Figure 2
Sample nameplate
Safety Precautions
Proper handling, storage, installation, maintenance and operation is essential to the safe and
reliable functioning of any pressure relief product.
Precautionary statements in the form of warnings, cautions and notes are used throughout this
instruction to emphasize important and critical factors where applicable.
Examples:
WARNING: An operating procedure or practice which if not strictly observed may
result in injury to personnel or loss of life.
CAUTION: An operating procedure or practice which if not strictly observed may
result in damage to or destruction of equipment.
These precautionary statements are by no means exhaustive.
Emerson Valves & Controls cannot be expected to know, evaluate, and advise customers
of all the possible applications and operating conditions for its products or of the possible
hazardous consequences which may result from the misapplication or misuse of such products.
Consequently, the improper handling, storage, installation, use or maintenance of any Emerson
Valves & Controls Product by a non Emerson Valves & Controls employee may void any Emerson
Valves & Controls guarantees or warranties with respect to such Product.
All personnel working with Emerson Valves & Controls products should be adequately trained and
thoroughly familiar with the contents of the appropriate instruction manual(s).
Emerson Valves & Controls cannot evaluate all conditions in which the products may be used.
However, Emerson Valves & Controls offers the following general safety suggestions:
• Never subject valves to sharp impact loads.
Rough handling (striking, bumping, dropping, etc.) may alter the pressure setting, deform valve
parts and adversely affect seat tightness and valve performance. Striking a valve which is under
pressure can cause premature actuation.
• Always lower the system pressure to the pressure level specified in the instruction before
making any adjustment to the valve. Furthermore, always install a proper test rod to gag an
installed valve before making any ring adjustments on the valve.
• Ear and eye protection should be used when working on a valve which has pressure.
• Never stand in front of the discharge outlet of a pressure relief valve which is under pressure.
• Always stand to the side of and at a safe distance from the valve discharge and use extreme
care when observing a valve for leakage.
The above precautions and suggestions are by no means exhaustive and the user should always
approach and use any pressure relief valve with great care.
Operation, Installation and Safety Instructions are available at www.
valves.emerson
.com or
from your local
Emerson
regional sales office or representative.
