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GENERAL PRODUCT SAFETY INFORMATION
WARNING
EXCESSIVE AIR PRESSURE. Can cause personal
injury, pulsation dampener damage or property damage.
Do not exceed the maximum inlet air pressure of
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120 p.s.i (8.3 bar) as stated on the pulsation dampener model
plate. When the pulsation dampener is used in a forced-feed
(flooded inlet) situation, a "check valve" must be installed at
the pump and pulsation dampener inlets.
A filter capable of filtering particles larger than 50 microns
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should be used. There is no lubrication required other than the
"O" ring lubricant which is applied during assembly or repair.
If lubricated air is present, make sure that it is compatible
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with the Nitrile "O" rings in the air section of the pulsation
dampener.
WARNING
MAXIMUM SURFACE TEMPERATURE LIMITS.
Maximum surface temperatures depend on the operating
conditions of heated fluid in the pulsation dampener. Do
not exceed maximum surface temperature limits of 200 F
(93 C) for PVDF, or 175 F (80 C) for polypropylene.
Ensure proper housekeeping to eliminate dust buildup on the
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pulsation dampener. Certain dusts may ignite at the pulsation
dampener surface temperature limits as noted.
Maximum temperatures are based on mechanical stress only.
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Certain chemicals will significantly reduce maximum safe
operating temperature. Consult the chemical manufacturer
for chemical compatibility and temperature limits.
MARKING. ARO excludes marking individual
WARNING
pumps and pulsation dampeners according to section
11.2 of ISO 80079-36:2016 due to complexity of material
& seal combination product configurations – Please refer-
ence detailed additional instructional information provid-
ed and enclosed as designated by the "X" in the Atex Di-
rective 2014/34/EC marking. Example:
the X means reading and understanding all the warning,
cautions and additional instructions in this manual.
The actual surface temperature of the pumps and pulsation
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dampeners depend on the running conditions of the pumps
and pulsation dampeners, the materials of construction, the
temperature of the fluid pumped, and the environmental
conditions.
For use in Explosive Gas Atmospheres the TEMPERATURE
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range rating is limited by the materials & seals used in the
construction per possible product configuration. Material
temperature limitations are provided and must not be
exceeded in the application. The pumps and pulsation
dampeners follow ISO 80079-36:2016: Ex h IIB Gb.
For use in Explosive Dust Atmospheres the TEMPERATURE
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range rating is limited by the materials & seals used in the
construction per possible product configuration. Material
temperature limitations are provided and must not be
exceeded in the application. The pumps and pulsation
dampeners follow ISO 80079-36:2016: Ex h IIIC Db.
WARNING
EXCESSIVE MATERIAL PRESSURE. Do not exceed
the maximum fluid pressure of 120 p.s.i (8.3 bar). Ther-
mal expansion will occur when fluid lines are exposed to
elevated temperatures and will cause a system rupture.
Install a pressure relief valve in the pumping system.
Be sure material hoses and other components are able
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to withstand fluid pressures developed by the pump.
Damaged hose could leak flammable liquids and create
potentially explosive atmospheres.
Check all hoses for damage or wear. Be certain dispensing
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device is clean and in proper working condition.
WARNING
Pulsation dampener exhaust may contain
contaminates. Can cause severe injury. Pipe air chamber
exhaust away from work area and personnel.
Pipe the exhaust to a safe location when pumping hazard-
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ous or flammable materials.
In the event of a diaphragm rupture, material can be
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forced out of the relief exhaust.
WARNING
LEAKING FLUIDS. Can cause explosive hazards.
Creep of gasket materials can cause fasteners to loosen,
resulting in leakage of flammable liquids and create po-
tentially explosive atmospheres.
Re-torque all fasteners before operation. Re-torque all
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fasteners and pipe fittings to insure against fluid leakage.
GENERAL INFORMATION / AUTOMATIC PULSATION DAMPENERS
NOTE: DO NOT OVERTIGHTEN FASTENERS. Refer to table
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for torque.
Pulsation
Dampener
SB20X Series
SB30X Series
SB20P Series
SB20R Series
Pulsation dampener damage caused by improper mounting or
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piping stress and external damage can result in fluid leakage.
WARNING
with certain fluids. Incompatible fluids may attack and
weaken the housing, causing rupture or explosion, which
can result in property damage or severe injury. For specif-
ic fluid compatibility, consult the chemical manufacturer.
WARNING
tled gas products to pressurize the pulsation dampener. Un-
regulated high pressure bottled gas has the potential for over
pressurization. Certain gasses, such as Nitrogen, can cause un-
predictable results. The pressure source MUST BE REGULATED.
WARNING
unit when it is under pressure. Relieve all material pressure in
the pumping system before attempting service or disassembly.
Disconnect air lines and carefully bleed any pressure off the
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system. Be certain the system is not maintaining pressure due
to a material restriction in the hose, line, dispensing device,
or the spray or extrusion tip. Failure to relieve pressure both
in upstream and downstream may result in an injury upon
disassembly.
WARNING MISAPPLICATION HAZARD. Do not use models
II 2GD X – where
containing aluminum wetted parts with food products
for human consumption. Plated parts can contain trace
amounts of lead.
CAUTION NOT FOR STRUCTURAL SUPPORT. Do not use
this product to support other system components or use
as a step. Improper support can result in fracture of the
housing, causing damage.
Plumbing must be supported to prevent stresses upon it.
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Install using mounting hardware supplied.
Protect the pulsation dampener from external damage.
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Consideration to protect the pulsation dampener from
damage should be made in the system design.
Support the pipe immediately downstream from the pulsation
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dampener.
moments from the shock blocker flanges and pump manifold.
Cantilever support is suggested immediately downstream
from the shock blocker.
Use a tee connector after the F-R-L on the pump air supply line
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and connect the line to the pulsation dampener's valve body
(1/4" ID (6mm ID) hose is sufficient). When the air supply to the
pump is shut down, the air to the shock blocker will be shut
down as well.
CAUTION
DAMPENER BEFORE APPLYING FLUID PRESSURE. Failure
to pressurize with air first can damage the diaphragm.
Always relieve the fluid pressure before removing the
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air pressure. Failure to relieve fluid pressure can damage
diaphragm.
The air pressure supplied to the pulsation dampener must be
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equal to the material pressure to provide the proper dampening
effect.
CAUTION
FLUID SYSTEM PRESSURE. THE GAUGE READING COULD
FALSELY REPRESENT ANY RESIDUAL FLUID PRESSURE.
NOTICE
cial conditions, and any similar recommendations identi-
fied by the explosive hazard assessment of the complete
machine, in the accompanying literature of the machine
into which the pulsation dampener is incorporated.
To safely use this product and conform with the provisions
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of the EU "Machinery Directive", all instructions given in the
accompanying literature, in addition to all conditions, notices
and warnings given herein, must be followed.
Screw Size
M10 x 1.5 - 6g
30 - 40 ft lbs (40.7 - 54.2 Nm)
M12 x 1.75 - 6g 60 - 70 ft lbs (81.3 - 94.9 Nm)
M10 x 1.5 - 6g
15 - 20 ft lbs (20.3 - 27.1 Nm)
CHEMICAL COMPATIBILITY HAZARD. Do not use
USE ONLY WITH COMPRESSED AIR. Do not use bot-
DISASSEMBLY HAZARD. Do not disassemble this
Support is required to eliminate forces and
AIR MUST BE SUPPLIED TO THE PULSATION
RELIEVING AIR PRESSURE WILL NOT AFFECT THE
Place the recommendations given in these spe-
Torque
en-2
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