Continental Disc Corporation SANITRX HPX User manual

GEP-6070
Rev. U 102335
Ref. I.D.: 15574
WARNING
USER SHOULD READ AND THOROUGHLY UNDERSTAND THESE INSTRUCTIONS BEFORE INSTALLING RUPTURE DISC.
THESE INSTRUCTIONS DO NOT PURPORT TO ADDRESS ALL OF THE SAFETY FACTORS ASSOCIATED WITH THE RUPTURE
DISC’S USE IN SERVICE. IT IS THE RESPONSIBILITY OF THE USER TO ESTABLISH APPROPRIATE SAFETY, HEALTH, AND
TRAINING MEASURES FOR THEIR PERSONNEL INSTALLING, SERVICING, OR WORKING IN AN AREA WHERE RUPTURE DISC
ASSEMBLIES ARE IN USE. SERVICE AND/OR MAINTENANCE ON OR AROUND THE RUPTURE DISC DEVICE MUST NOT BE
PERFORMED WHILE THE DEVICE IS SUBJECTED TO OPERATING PRESSURES AND/OR TEMPERATURES.
IT IS THE USER’S SOLE RESPONSIBILITY FOR DESIGN AND PLACEMENT OF RUPTURE DISCS WITHIN THEIR FACILITY AND
UPON THE EQUIPMENT UPON WHICH THE RUPTURE DISC OF USER’S SELECTION IS TO BE LOCATED. IT IS USER’S SOLE
RESPONSIBILITY FOR THE DESIGN OF ADEQUATE VENTING AND INSTALLATION OF ADEQUATE VENT PIPING OR
DIRECTIONAL FLOW AFTER RUPTURE OCCURS WITH THE RUPTURE DISC AS INTENDED. WHEN SIZE IS SPECIFIED,
CONTINENTAL DISC CORPORATION ASSUMES THAT ADEQUATE PROVISIONS HAVE BEEN MADE BY PURCHASER FOR
PROPER VENTING OF A SYSTEM TO RELIEVE THE SPECIFIC PRESSURE. LOCATE RUPTURE DISC WHERE PEOPLE OR
PROPERTY WILL NOT BE EXPOSED TO THE SYSTEM DISCHARGE IN CASE OF RUPTURE. VENT TOXIC OR FLAMMABLE
FUMES OR LIQUIDS TO A SAFE LOCATION TO PREVENT PERSONAL INJURY OR PROPERTY DAMAGE.
IT IS THE USER’S SOLE RESPONSIBILITY TO SPECIFY THE BURST PRESSURE RATING OF A RUPTURE DISC AT A
COINCIDENT TEMPERATURE AT WHICH THE RUPTURE DISC IS TO BE USED. A RUPTURE DISC IS A TEMPERATURE
SENSITIVE DEVICE. THE BURST PRESSURE OF THE RUPTURE DISC IS DIRECTLY AFFECTED BY ITS EXPOSURE TO THE
COINCIDENT TEMPERATURE. GENERALLY, AS THE TEMPERATURE AT THE RUPTURE DISC INCREASES, THE BURST
PRESSURE DECREASES; INVERSELY, AS THE TEMPERATURE AT THE RUPTURE DISC DECREASES, THE BURST PRESSURE
MAY INCREASE. FAILURE TO PROPERLY UTILIZE A RUPTURE DISC AT THE SPECIFIED COINCIDENT TEMPERATURE
COULD CAUSE PREMATURE FAILURE OR OVERPRESSURIZATION OF A SYSTEM.
THE INSTANTANEOUS RELEASE OF PRESSURE FROM THE RUPTURE DISC CAN CREATE VIOLENT NOISES DUE TO THE
DISCHARGE AT SONIC VELOCITY. IT IS THE USER’S SOLE RESPONSIBILITY TO PROTECT AGAINST HEARING DAMAGE TO
ANY BYSTANDERS.
RUPTURE DISCS AND TAGS ARE MADE OF METAL FOILS OF VARYING THICKNESS. THE METAL EDGES MAY BE SHARP.
PERSONNEL INSTALLING OR EXAMINING THE RUPTURE DISCS SHOULD PROTECT AGAINST CUTS OR INJURY WHEN
HANDLING THE RUPTURE DISC. DO NOT LIFT A RUPTURE DISC BY ITS ATTACHED TAG.
PARTICLES MAY BE DISCHARGED WHEN THE RUPTURE DISC RUPTURES. THESE PARTICLES MAY BE PART OF THE
RUPTURE DISC ITSELF, OR OTHER ENVIRONMENTAL MATTER IN THE SYSTEM. IT IS THE USER’S SOLE RESPONSIBILITY
TO ASSURE THAT THESE PARTICLES ARE DIRECTED TO A SAFE AREA TO PREVENT PERSONAL INJURY OR PROPERTY
DAMAGE.
THERE IS NO GUARANTEE OF RUPTURE DISC LIFE. SUCH LIFE SPAN IS AFFECTED BY CORROSION, CREEP AND
FATIGUE, AND PHYSICAL DAMAGE. THESE CONDITIONS WILL DERATE THE RUPTURE DISC TO A LOWER SET PRESSURE.
THE CUSTOMER AND/OR USER SHOULD BE PREPARED TO HANDLE PREMATURE FAILURE OF THE RUPTURE DISC. THE
MEDIA OR OTHER ENVIRONMENTAL CONDITIONS SHOULD NOT ALLOW ANY BUILDUP OR SOLIDIFICATION OF MEDIA TO
OCCUR ON A RUPTURE DISC. THIS MAY INCREASE THE PRESSURE SETTING OF THE RUPTURE DISC.
CUSTOMER AND/OR ITS INSTALLER SHALL BE SOLELY RESPONSIBLE FOR THE PROPER INSTALLATION OF SELLER’S
HOLDERS AND RUPTURE DISCS INTO A SYSTEM. CUSTOMER AND/OR ITS INSTALLER SHALL BE SOLELY RESPONSIBLE
FOR IMPROPER INSTALLATION AND PHYSICAL DAMAGE RESULTING THEREFROM, INCLUDING BUT NOT LIMITED TO,
DAMAGE RESULTING FROM LEAKAGE, IMPROPER TORQUING OR SEATING OF A RUPTURE DISC OR FAILURE TO FOLLOW
INSTALLATION INSTRUCTIONS WHERE PROVIDED.
RUPTURE DISCS ARE PRECISION SAFETY DEVICES AND MUST BE INSTALLED PROPERLY. RUPTURE DISCS MUST BE
INSTALLED BY TRAINED, KNOWLEDGEABLE INSTALLERS AND ONLY WITHIN ENVIRONMENTS SUITABLE AND
APPROPRIATE FOR A RUPTURE DISC. CARE MUST BE USED IN A FACILITY'S DESIGN TO PROTECT BOTH THE RUPTURE
DISC FROM INADVERTENT DAMAGE WHICH COULD CAUSE ITS PREMATURE RELEASE AND TO PROTECT INDIVIDUALS
EXPOSED TO HAZARDS CREATED BY SUCH SUDDEN RELEASE.
PROPER INSTALLATION OF A RUPTURE DISC IS CRITICAL TO PERFORMANCE AND TO SAFETY. FAILURE TO PROVIDE
PROPER SEATING OF A RUPTURE DISC MAY AFFECT RUPTURE DISC PERFORMANCE, BURST PRESSURE ACCURACY AND
MAY RESULT IN ITS PREMATURE FAILURE.
Preparation and Installation of the SANITRX HPX®,
SANITRX HPX®II, or SANITRX®LPX Rupture Disc

2
PRECISION INDENTATION
GASKET
ARCUATE RING
FIGURE 'A'
FLOW
CLOSURE
WING NUT
MBC SANITARY
CLAMP
OR
ALARM SYSTEM
RUPTURE
DISC TAG
RUPTURE DISC
(OPTIONAL)
INLET
SANITARY B.D.I.
OUTLET
FIGURE 'B'
I. Safety Precautions Before Installation
1. The SANITRX HPX, SANITRX HPX II, and SANITRX LPX rupture discs are
precision instruments and must be handled with extreme care. Rupture discs
should be installed only by qualified personnel familiar with rupture discs and
proper piping practices.
2. The SANITRX HPX, SANITRX HPX II, and SANITRX LPX rupture discs shall
be installed between existing tube O.D. sanitary ferrules or SANITRX ferrules
and be secured by a bolted or wing nut type clamp or equivalent.
3. The SANITRX HPX, SANITRX HPX II, and SANITRX LPX rupture discs may
include a factory installed indentation positioned near the apex of the rupture
disc dome (see Figure A). Do not install rupture disc if there is any damage
evident. A damaged rupture disc is any rupture disc with visible nicks or dents
in the dome.
4. See rupture disc tag to verify set pressure, operating temperature, and all other
operating parameters.
II. Sanitary Fitting
Preparation of Sanitary Fittings for Rupture Disc Installation
New Installation
Clean all foreign material from the rupture disc sealing area of both the sanitary fitting
inlet and outlet.
Replacement Installation
CAUTION: WHEN INSTALLING A NEW RUPTURE DISC, ASSURE THAT THE
FLOW DIRECTIONAL ARROWS ON THE RUPTURE DISC THREE
DIMENSIONAL TAG POINT IN THE VENT DIRECTION OF THE
RELIEF SYSTEM.
1. If the Burst Disc Indicator (B.D.I.®) Alarm System is used, disconnect the alarm
strip from the monitor by unplugging the B.D.I. connector from the lead wire
connector.
2. Clean the rupture disc sealing areas of both the sanitary fitting inlet and outlet.
These surfaces must be completely clean and free of all rust, corrosion, and
foreign material to ensure a proper seal. Do not use scraper or abrasives.
3. Inspect the rupture disc sealing areas for nicks, scratches, or pitting. If any of
these conditions are present, do not install the rupture disc.
4. Remove any adhered gasket material from previous installation.
III. Installation of the SANITRX HPX, SANITRX HPX II, or
SANITRX LPX Rupture Disc into the System (See Figure B)
NOTE: WHEN INSTALLING THE RUPTURE DISC BETWEEN SANITRX
FERRULES, THE FLAT SIDE OF THE FERRULES MUST FACE THE
RUPTURE DISC.
1. Before placing the SANITRX HPX, SANITRX HPX II, or SANITRX LPX rupture disc
into the system, ensure that the gasket surfaces are clean and free of all corrosion
and foreign material.
CAUTION: ASSURE THAT THE FLOW DIRECTIONAL ARROWS ON THE
RUPTURE DISC THREE-DIMENSIONAL TAG POINT IN THE VENT
DIRECTION OF THE RELIEF SYSTEM.
2. If the Sanitary B.D.I. Alarm System is used, visually inspect the adhesion of the
strip to the seal and the electrical circuit. If the strip has become detached or the
circuit has been broken, DO NOT INSTALL THE RUPTURE DISC.

3
MOUNTING TAB
STRAIN RELIEF
LEAD WIRE
FIGURE 'C'
3
1
CF-8
2
CF-8
4
FIGURE 'D'
EXAMPLE OF BOLT
TORQUE SEQUENCE
3. Install the SANITRX HPX, SANITRX HPX II, or SANITRX LPX rupture disc
into the sanitary fitting inlet ferrule. Secure the sanitary fitting inlet ferrule,
SANITRX HPX, SANITRX HPX II, or SANITRX LPX rupture disc, and
sanitary fitting outlet ferrule with the appropriate size CDC MBC Sanitary
Closure, wing nut clamp, or Tri-Clamp 13 MHHM or equivalent. For the wing
nut clamp, the hinge portion of the clamp must be positioned adjacent to the
rupture disc tag. For the MBC Sanitary Closure, either side of the bolted
portion of the clamp must be positioned adjacent to the rupture disc tag.
4. If the B.D.I. Alarm System is used, installation of the strain relief mounting
tab is necessary.
a) Before tightening the clamp, install the strain relief
mounting tab.
b) Slide the mounting tab over the clamp stud as shown in
Figure C and then torque as necessary.
c) Insert the lead wire into the standoff clip.
5. If the wing nut clamp is used, torque the wing nut with a calibrated torque wrench to
a recommended torque value of 30 In•Lbs / (3.4 N•m) using a 1-5/16" hex socket.
6. If the MBC Sanitary Closure is used, install free running bolts and nuts to finger
tightness. Torque nuts number 1 and 2 (see Figure D) with a calibrated torque
wrench at 50% increments to a final torque of 20 Ft•Lbs / (27 N•m). Based on
gasket material type and rupture disc material thickness, the torque compression
may close the gap between the clamp halves. If it does not, maintain an equal and
parallel gap between the clamp halves throughout the torque sequence. Torque
nuts number 3 and 4 using the same criteria as nuts 1 and 2.
7. If the sanitary B.D.I. Alarm System is used, plug the B.D.I. connector into
the lead wire connector using a slight twisting action.
IV. Welding Flange Connections
Preparation of Sanitary Fittings for Rupture Disc Installation
New Installation
Clean all foreign material from the rupture disc sealing area of both the welding flange and the sanitary ferrule.
Replacement Installation
1. Disconnect the Burst Disc Indicator (B.D.I.®) alarm strip from the monitor by unplugging the B.D.I. connector from the lead
wire connector.
2. Clean the rupture disc sealing areas of both the welding flange and the sanitary ferrule. These surfaces must be
completely clean and free of all rust, corrosion, and foreign material to ensure a proper seal. Do not use scraper or
abrasives.
3. Inspect the rupture disc sealing areas for nicks, scratches, or pitting. If any of these conditions are present, do not install
the rupture disc.
4. Remove any adhered gasket material from previous installation.

4
SANITARY B.D.I.
ALARM SYSTEM
(OPTIONAL)
SANITARY
FERRULE
THREADED
STUD
WELDING
FLANGE
RUPTURE
DISC
LOCKING
RING
ACORN NUT
GROOVE
DIRECTION
FLOW
FIGURE 'E'
V. Installation of the SANITRX HPX, SANITRX HPX II, or SANITRX LPX Rupture Disc into the
System (See Figure E)
NOTE: IF PTFE OR STEEL REINFORCED PTFE SANITARY GASKETS
ARE USED, THE MBC SANITARY CLOSURE IS RECOMMENDED.
1. Before placing the SANITRX HPX, SANITRX HPX II, or SANITRX LPX
rupture disc into the system, ensure that the gasket surfaces are clean
and free of all corrosion and foreign material.
CAUTION: ASSURE THAT THE FLOW DIRECTIONAL ARROWS ON THE
RUPTURE DISC THREE-DIMENSIONAL TAG POINT IN THE
VENT DIRECTION OF THE RELIEF SYSTEM.
2. Visually inspect the adhesion of the strip to the seal and the electrical
circuit. If the strip has become detached or the circuit has been broken,
DO NOT INSTALL THE RUPTURE DISC.
3. Install the SANITRX HPX, SANITRX HPX II, or SANITRX LPX
rupture disc into the welding flange, dome side down, as
shown. Secure the SANITRX HPX, SANITRX HPX II, or
SANITRX LPX rupture disc, the sanitary fitting outlet ferrule,
and the locking ring onto the welding flange. Make sure the
tag extension is aligned with a groove in the welding flange.
4. Installation of the strain relief mounting tab is necessary.
a) Before installing nuts, install the strain relief mounting tab.
b) Slide the mounting tab over the threaded stud, as shown in
Figure F, and then torque each nut as necessary (see Step 5).
c) Insert the lead wire into the standoff clip.
5. Torque each nut with a calibrated torque wrench in a cross torquing pattern to the
recommended torque value shown below. The gaps between the locking ring halves
and the welding flange must be equal during torquing.
SIZE TORQUE
1” 30 In•Lbs / (3.4 N•m)
1-1/2” 30 In•Lbs / (3.4 N•m)
2” 42 In•Lbs / (4.8 N•m)
3” 46 In•Lbs / (5.2 N•m)
6. Plug the B.D.I. connector into the lead wire connector using a slight twisting action.
VI. Preventative Maintenance
1. All SANITRX type rupture discs requiring compliance with 3-A Sanitary Standard Number 60-01 must be marked “One Time
Installation”. Removal and reinstallation of rupture discs marked with this statement is not allowed in process applications
requiring 3-A compliance. Users having SANITRX rupture discs requiring 3-A compliance must replace each rupture disc
removed from service with a new rupture disc designated for 3-A service.
2. Risk assessment and an annual rupture disc replacement are recommended. Rupture disc service life is
determined by system operating conditions. The effects of severe pressure/vacuum cycles, corrosion,
temperature variations, or other adverse conditions must be evaluated by the user through actual service
experience to determine optimal service life.
3. IF THE RUPTURE DISC IS NOT REPLACED PERIODICALLY WHEN EXPOSED TO THESE CONDITIONS, PREMATURE
FAILURE OF THE RUPTURE DISC MAY OCCUR, THEREBY DISCHARGING THE PROCESS MEDIA.
4. To avoid extended downtime, maintain three spare rupture discs in stock at all times for each holder in use. The
number of spares required ultimately will be determined by service conditions.
STRAIN RELIEF
MOUNTING TAB
STANDOFF
CLIP
LEAD WIRE
FIGURE 'F'

5
VII. Customer Service
If you wish to discuss your application, installation, or maintenance, please contact the Customer Service Department at
our headquarters location.
B.D.I. ALARM SYSTEM OPERATING LIMITS
TEMPERATURE: -40° F to + 400° F
(-40° C to + 204° C)
MAX CURRENT: 50 Milli Amps
MAX VOLTAGE: 24 VDC
FULFILLS THE REQUIREMENTS OF DIRECTIVE 2014/34/EU (ATEX) FOR: Equipment or
protective system intended for use in potentially explosive atmospheres.
Conformity assessment performed by Notified Body no. 0359,
Intertek Testing and Certification Limited, Leatherhead, Surrey, UK.
BURST DISC INDICATOR (B.D.I.®): Sizes 25mm through 900mm (1 inch through 36 inches)
Marked: II 1 G Ex ia IIC Tx Ga
II 1 D Ex ia IIIC Tx Da
I M1 Ex ia I Ma
(Tamb = -40°C ≤Ta ≤+204°C)
EC Type Examination Certificate: ITS13ATEX27734X
THE MAXIMUM INTRINSICALLY SAFE INPUT PARAMETERS ARE AS FOLLOWS:
Ui = 24V dc
Ii = 50 mA
Pi = 0.3W
THE EQUIVALENT PARAMETERS ARE:
Ci = 0
Li = 0
SPECIAL CONDITIONS FOR SAFE USE:
1. Temperature Class of the BDI sensor is marked as Tx, since the surface temperature is controlled
by the process temperature being monitored. The sensor itself exhibits negligible temperature rise.
2. When located in an area requiring EPL Ga / Category 1G (e.g. Zone 0) hazardous area, the user
shall ensure that electrostatic charging of the non-metallic parts cannot occur.
3. When provided with terminations by means of flying leads, these shall be terminated in an
appropriately protected terminal box.
4. When installed, the BDI strip shall be provided with an IP rating of IP20 as a minimum.
5. For Group I applications, the BDI strip and terminations shall be protected to IP54 or better.

Continental Disc Corporation reserves the right to alter the information in this publication without notice.
Reproduction without written permission prohibited. ©2010, 2011, 2012, 2013, 2014, 2016 Printed in U.S.A.
Continental Disc Corporation
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