Applicable Notices for ATEX
2014/34/EU Conformity
Product Type:
Corken Liquid Transfer Bypass Valves
Model Covered:
B177
Intended Application:
The bypass valve models covered by this manual conform to
the European Union ATEX 2014/34/EU Directive for explosive
gas atmospheres and transfer of liquefied gases such as
Liquefied Petroleum Gas, anhydrous ammonia, freons, etc.
Possible Misuse Warning:
The designated bypass valve models must only be
installed in systems designed for its intended use, similar
to the examples presented in this manual.
ATEX Classification:
Group II; Category 2; G; Temperature Class T4 – T5
These products are classified under the ATEX directive
as Equipment – Group II – Category 2 – equipment is
intended for use in areas where explosive atmospheres
caused by gases or vapors (G) may be present. The
surface Temperature Class rating is a range between T4
275°F (135°C) and T5 212°F (100°C).
Nameplate:
Training Instructions:
Instructions for the safe application and use of this product
are provided in this manual. Read this manual completely
prior to installation and use of this product. Only qualified
and properly trained personnel should be allowed to install,
operate, and maintain this equipment.
Mechanical Ignition Sources:
The bypass valve is installed as part of an assembly including
the pump and the entire system must be grounded to prevent
possible electrostatic discharge. Installation and adjustment
guidelines are provided in this manual and are to be followed
for the proper operation and performance of the valve.
Sound Levels:
These products are reactionary devices used in pumping
systems. Sound levels are highly dependent upon the
application, product being pumped, and installation. When
operating in the system the valves should have a noise
level no higher than 80 dBA.
Piping Forces and Moments:
Maximum Allowable Nozzle Forces and Moments
Note: Piping systems should be designed according to
standard engineering practice and applicable national
and local codes. NO piping induced forces or moments
are recommended for Corken B177 bypass valves.
X—Horizontal (perpendicular to valve discharge port)
Y—Vertical
Z—Horizontal (parallel to valve discharge port)
Fx = Fy = Fz = 42 lb (19 kg)
Mx = My = Mz = 70 ft•lb (10 kg•m)
Notice!
Corken bypass valves should only be installed in LPG
& NH
3
systems that have been designed by qualified
engineering personnel and operated and maintained
by qualified technicians. The system must conform to
all applicable local and national regulations and safety
standards (specifically, LPG systems
must conform to
NFPA 58). This manual
must be kept with the bypass
valves and be reviewed
before installing, operating or
performing any maintenance work.
Warning!
Do not attempt to open the pump or bypass valve until you
have bled off the pressure. High pressure in the system
can cause personal injury and/or property damage.
Please note: if the system contains a meter, the differential
valve will keep liquid under pressure in the pump, meter
and piping even after the hose has been emptied.
File number
ATEX
directive
Explosion
protection
ATEX Directive
2014/34/EU marking
Equipment classified
as Group II—Catagory 2
Explosion gas atmosphere
high level
Surface temperature range
T4 (135°C) 275°F
4
Summary of Contents for B177-2
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