250,000 cycles at 95% operating ratio                                                       

Cycle tests performed at CDC Engineering Labratory and further information available on request.

Unique Lot Qualification Testing                                                       

SANITRX Scored Reverse Acting Continental Rupture Disc Lot Qualification Testing



SANITRX rupture discs are manufactured and tested under a Quality Assurance Program certified to ISO 9001 Quality System requirements. Before any lot of SANITRX rupture discs are shipped from Continental Disc Corporation, specific criteria must be met. Following is a listing of qualification procedures and tests required for each lot.

Any rupture disc which fails any test or inspection at any stage during manufacture, causes total lot rejection. The lot of rupture discs is scrapped, remanufactured and each step or test listed below is repeated. There are NO MARGINAL RUPTURE DISCS, NO SECONDS, and in TOTAL QUALITY, no room for error.

1) Liquid Penetrant Test - A liquid penetrant test is conducted on each rupture disc to verify the score integrity.

2) Destructive Burst Test - One rupture disc from the lot is intentionally damaged. This rupture disc is then burst under air pressure to verify the damage safety ratio.

3) Destructive Burst Test - When specified for liquid service, two rupture discs from the lot are intentionally damaged. Under hydraulic pressure, both rupture discs are burst tested to verify burst pressure and the damage safety ratio in liquid service.

4) Destructive Burst Test - A minimum of two rupture discs are burst tested at ambient temperature as required by ASME Code Section VIII and Continental Disc Corporation’s internal testing standard.

5) Destructive Burst Test - Two rupture discs are burst tested at elevated temperature in accordance with C.D.C’s internal test standard. ASME Code Section VIII temperature tests are also conducted when specified.

6) Simulated Service Test - One rupture disc is pressurized with 15 psig pressure on the concave side. The rupture disc is then cycled from 0 to 90% of the ambient rating (plus 15 psig) against the convex side for a minimum of 500 cycles, followed by a liquid penetrant test of the rupture disc score line. This functional test is to verify score line integrity after cycling.

7) Proof Pressure Test - All remaining rupture discs in the lot, comprising the shipment quantity, are proof pressure tested to 90% of the ambient temperature rating to verify each rupture disc’s ability to withstand the maximum operating pressure recommended by Continental Disc Corporation.

8) Final Production Stage:

a) Cleaning the finished rupture discs.
b) Tagging per customer requirements on Continental Disc’s exclusive three-dimensional tag. Tagging includes capacity when ASME Section VIII is specified.
c) Completion of a burst test certificate for enclosure with shipment.

Final inspection by Quality Assurance is independent of production. It is performed 100% and includes verification of all test results for conformance, rupture disc physical appearance, documentation review, and packaging inspection.

Burst Disc Indicator                                                       

Universal or Integral B.D.I.^® (Burst Disc Indicator) Alarm System

The B.D.I. (Burst Disc Indicator) Alarm System is designed for use with Continental rupture discs. The B.D.I. Alarm System signals the system operator when a rupture disc has burst to relieve an overpressure or vacuum condition.

The heart of the system is the B.D.I. Alarm Strip. Upon disc rupture, the B.D.I. Alarm Strip is severed, disrupting the flow of electric current through the strip. The change in the electric circuit status can be monitored in a control room, or with a Continental Disc B.D.I. Monitor. The B.D.I. Monitor can warn with a visual and/or audible alarm and can also activate appropriate equipment.

The B.D.I. Alarm System should be specified:

  • When warning of pressure relief is essential for plant safety

  • When immediate notice is needed of relief of an overpressure or vacuum condition to indicate process malfunction

  • When indication is vital that a rupture disc has burst and toxic substances are venting

  • When emergency equipment must be triggered immediately upon disc rupture to alter or stop a process

  • When loss or contamination of product will occur if a rupture disc is not replaced immediately

  • When monitoring of rupture discs is important in hard-to-reach locations

Suitable for multi batch processing                                                       

Due to its high performance operating capabilities, range of burst ratings and materials of construction, the HPX rupture disc is the ideal product to use in plants where production includes batch processing runs where operating conditions and media may change frequently. The variability offered by HPX rupture discs makes future modifications to specifications easier to incorporate in change control procedures and without piping modifications.

HPX Scoring                                                       

Precission scoring in the vent side of the dome improves cyclic life as the score is in compression rather than shear. This is also much better for Biotech applications as its a more aseptic design as the score is not in contact with the process. This is a result of years of R & D work at CDC who drive the rupture disc market in terms of new technology & development.

Gaskets - USP & FDA                                                       

Standard gaskets are designed for use in industry standard ferrules with optional gaskets available for use in SANITRX flat face fittings and NovAseptic Connectors. Replacement slotted gaskets are available upon request. Slotted gaskets of the same material and seat type as the original should be used to maintain the original specifications as shown on the rupture disc tag.

Gaskets made from materials shown in the Gasket Materials and Temperatures table have been tested and certified to be in compliance with USP Class VI, Section<88> Biological Reactivity Tests, “In Vivo”. PTFE TEFLON^® gaskets are in compliance
with FDA CFR Title 21, Part 177, Subpart B Section 177.1550. Materials other than PTFE TEFLON^® shown in the Gasket Materials and Temperatures table are in compliance with FDA CFR Title 21, Part 177, Subpart C Section 177.2600. All of these gaskets are free of animal and human derivatives, polishing compounds and release agents.

NA Connect Design                                                       

The SANITRX HPX also specifically fits within the sanitary clamping design of the NovAseptic NA-CONNECT holder. This flush-mount holder is becoming increasingly popular in sanitary processing industries because it allows installation of the rupture disc directly against the wall of the vessel to allow for easy cleaning and sterilization.

Clamps

SANITRX HPX rupture discs are designed for installation directly between sanitary tube O.D. connections secured in place with a heavy-duty clamp, such as the Continental Disc MBC™ (Multi-Bolt Clamp) or a Sanitary Fitting Clamp (both pictured above). Both 304 SS clamp types are available in 1” through 4” sizes.

Fittings

SANITRX^® and SANITRX HPX rupture discs are designed for use with ASME BPE and 3A compliant grooved fittings. For convenience, Continental Disc offers ASME BPE compliant butt weld ferrules, spool pieces and concentric reducers.

Guaranteed Reliability                                                       

  • Advanced product design

  • Precise manufacturing technology

  • Extensive testing performed during the manufacturing process and lot qualification

  • Pre-shipment inspection

  • Unique packaging designed to protect your rupture discs in shipment, storage and handling at your plant site

  • Ability to operate in pressure-to-vacuum cycling applications

Guaranteed Performance                                                       

The HPX rupture disc is a semicircular scored reverse acting rupture disc that is ideal for liquid or gas/vapor applications.

Each lot of discs is built to order per the specifications of each overpressure relief requirement in your plant. Each lot is then performance tested to provide reliable performance in your plant during normal operations and in overpressure conditions. Each HPX rupture disc is proof pressure-tested prior to shipment.

Optimum material thickness and manufacturing tooling design provide not only the full opening and accurate burst rating you expect but also longer service life at higher operating-to-burst ratios demanded by today’s process industries.

Sanitary Packing                                                       

SANITRX HPX rupture discs are shipped in sanitary, non-toxic environmentally-friendly packaging.

Benefits:

 • Plastic packaging eliminates direct contact of the rupture disc with open cell material, such as cardboard or foam, which can carry contaminants or leave particles on the rupture disc.

 • Clear packaging provides visibility of the rupture disc tag allowing verification of the rupture disc specification without removal from the package.

 • The plastic package and cardboard carton are recyclable materials.

 • Combined with the vertical tag, the new plastic packaging provides a compact, space saving container for the rupture disc

ASME BPE Complient                                                       

This standard provides requirements applicable to the design of equipment used in the biotech, pharmaceutical and personal care industries including aspects related to sterility and cleanability, materials of construction, dimensions and tolerances, surface finish, material joining and seals.

The standard applies to components in contact with the product, raw materials or intermediates. Systems that are a critical part of the manufacturing process such as water for injection (WFI), clean steam, filtration and intermediate storage may also
abide by this standard.

SANITRX HPX is in compliance with the essential criteria of the ASME BPE standard as follows:

 • CIP and SIP cleanable

 • Withstands temperatures of 130°C where steam sterilization is required

 • The standard surface finish meets SF1 (20 Ra microinch) for the SANITRX HPX and the internal surfaces of the ASME BPE compliant sanitary fittings

 • The SANITRX HPX gaskets in the Gasket Materials and Temperatures table meet ASME BPE requirements, including full traceability and prohibition of animal derivatives

 • Rupture discs and fittings are usually, as a standard, made out of 316L SS material; alternates are available if specified by users

 • Fully traceable 316 or 316L SS materials

 • Fittings are marked and packaged in accordance with ASME BPE

 • USP Class VI certified gaskets meet all ASME BPE requirements including full traceability and prohibition of animal derivatives

What is Sanitrx LPX?                                                       

The SANITRX^® LPX is a stainless steel, reverseacting rupture disc designed specifically for the European pharmaceutical, food and beverage, and biotech industries.

This differential pressure relief device features an instantaneous full-open relief area for protecting equipment, vessels, systems and people from an overpressure condition.

Specifications                                                       

 • Sizes available: 40 mm, 50 mm, 80 mm

 • Rupture disc and ring materials: 316 SS, 316L SS

 • Gasket Materials (FDA and USP Class VI Compliant): Peroxide Cured Silicone1, Platinum Cured Silicone, White VITON^®, Black VITON^®, White EPDM, Black EPDM, PTFE TEFLON^®

 • Burst Pressure: 0,3 MIN to 0,5 MAX barg @ 20 Deg C

 • Maximum recommended operating ratio: 90% of MIN burst pressure

 • Designed and tested for gas/vapor service

Features                                                       

 • Permanently attached three-dimensional flow direction tag provides immediate visual verification of proper rupture disc orientation within the piping system.

 • Rupture disc can be operated to full vacuum

 • Available with Continental Disc alarm systems to remotely signal when the rupture disc has burst

 • SANITRX LPX rupture discs are available with the full support and expertise of our technical team

Benefits                                                       

 • The standard low pressure (Burst Pressure: 0,3 MIN to 0,5 MAX barg @ 20 Deg C) of the SANITRX LPX allows for a significant cost and time savings benefit in that there is no requirement of third party inspection because PED is not applicable.

 • Meets ASME BPE and USP Class VI criteria, including:

  1) SF1 surface finish (0,5 Ra micrometers or better)

  2) Solid metal construction provides cleanability for CIP/SIP applications

  3) Fully traceable materials including USP Class VI certified gaskets

  4) All components are free of polishing compounds, release agents and animal derivatives

 • Lower installation and maintenance costs

 • Increased productivity

Related Products                                                       

SANITRX LPX rupture discs are designed for installation directly between sanitary tube O.D. connections secured in place with a heavy-duty clamp, such as the Continental Disc MBC™ (Multi-Bolt Clamp) or a Sanitary Fitting Clamp.