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CUSTOMIZED Pressure Relief Products 7-8803-7 WORLDWIDE SERVICE

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CUSTOMIZED Pressure Relief Products 7-8803-7 WORLDWIDE SERVICE CUSTOMIZED Pressure Relief Products 7-8803-7 WORLDWIDE SERVICE Solutions...for tough Working With Specialized The Role of Pressure Relief Problems Technologies...Like Yours Rupture Discs Whether it's from the standard Solving pressure relief problems Rupture discs are non-reclosing product line -- or a custom-designed for you is the special role played by pressure relief devices which open within rupture disc for a one-of-a-kind application C.D.C.'s Product Development Group milliseconds when system pressure -- Continental Disc Corporation has built a and the Special Products Group. reaches its specific burst rating. 30-year reputation for solving the toughest This pool of product development They are designed to relieve either pressure relief problems. expertise has been retrofitting C.D.C. positive or negative conditions at a For OEM's. Defense Industries. designs into clients' systems for a specified set pressure and in some Space exploration program. Aircraft and quarter of a century. They are engineers applications, additionally withstand aerospace manufacturers. The chemical who are at home with special or exotic vacuum or backpressure. Rupture discs and petrochemical industries. Food materials, ultrahigh or ultralow burst may also be designed to provide dual processors. The electronics industry. pressures, as well as state-of-the-art pro- relief (positive or negative) within the And countless more. cessing and testing requirements. same rupture disc. Whether your needs are for A rupture disc opens (relieves) Problem Solving quantities of one, one thousand, or within milliseconds. This instantaneous more, Continental Disc is ready to solve and unrestricted relief capacity allows Continental Disc Corporation's your pressure relief problems. Contact the rupture disc to be used: custom design capabilities have been our Corporate Office in Liberty, Missouri As the PRIMARY relief device tapped for such wide ranging projects or one of our overseas offices located in as air conditioning units, oxygen supply The Netherlands, Germany and the As a SECONDARY relief device to systems, aircraft ejection seats, United Kingdom. The back cover lists a pressure relief valve sonabouys and the space shuttle. specific addresses and phone numbers As a relief device in COMBINATION The same engineering, testing and to help locate the representative series with a pressure relief valve manufacturing talent that has solved nearest you. OR one-of-a-kind problems for worldwide As a QUICK OPENING device for industries is now available to deliver pressure transfer innovative solutions to your own Continental Disc Corporation specific pressure relief problems. manufactures and tests under an ISO 9001 Certified Quality System. Whether your needs include special or exotic materials, ultrahigh or ultralow burst pressures, our Engineering, Manufacturing and Testing facilities are ready to serve your needs. 2 CUSTOMIZED TECHNOLOGY There are two basic designs of rupture discs that can be configured into many different envelope packages to suit your application, Tension Type discs and Reverse Acting discs. Both designs are compatible for seal welding (Hermetic Seal). TENSION TYPE: REVERSE ACTING TYPE Operation to 80% of burst rating Operation to 90% of burst rating Available in non-fragmenting design Designed for non-fragmentation Good cyclic or pulsating service life Excellent cyclic or pulsating service life Good corrosion resistance Improved corrosion resistance Less affected by elevated temperatures than tension type C.D.C. manufactures rupture disc stamped with the rated burst pressure. pressure at which each rupture disc assemblies with pressure ranges from The rated (stamped) burst pressure is bursts. This average is the rated 6 water column to 80,000 psig and for established by bursting a minimum of (stamped) burst pressure. A tolerance temperature conditions from cryogenic two discs and averaging the pressure is then applied to this pressure to to 1000°F. Depending upon the type at which the rupture discs burst. This determine the maximum expected of rupture disc used, TENSION or average is the rated (stamped) burst variation from the rupture discs REVERSE ACTING, a manufacturing pressure of the rupture disc. rated (stamped) burst pressure. range and burst tolerance is applicable. As per ASME Code, a rupture disc Burst Tolerance is designed with a burst tolerance of ±2 Manufacturing Range psig for pressures under 40 psig and In accordance with ASME Code, a ±5% for pressures 40 psig and above. Manufacturing Range is defined as tolerance is applied to the rated burst Refer to the table below for the the allowable pressure range within pressure of a rupture disc. The rated applicable manufacturing range which a rupture disc is rated. It is based or stamped burst pressure is established and burst tolerance for Tension and upon the customer specified burst after the rupture disc has been Reverse Acting rupture disc designs. pressure. After the rupture disc has manufactured by testing a minimum been manufactured and tested, it is of two rupture discs and averaging the Rupture Specified Burst Manufacturing NOTES: Disc Pressure Rating Range Burst Type Tolerance 1. Special reduced manufacturing psig barg % Under % Over ranges can be obtained. 1/2, 3/4 2 - 5 0,138 - 0,345 -40 +40 or min/max ranges are available 6 - 8 0,414 - 0,552 -40 +40 upon request. Please consult your Continental Disc Corporation 9 - 12 0,612 - 0,815 -30 +30 ± 2 psig representative or the factory for Solid 13 - 14 0,896 - 0,955 -10 +20 Metal additional information. Tension 15 - 19 1,03 - 1,31 -10 +20 20 - 39 1,38 - 2,69 -4 +14 2. Burst tolerances are the maximum 40 - 50 2,76 - 3,45 -4 +14 expected variation from the rupture 51 - 100 3,52 - 6,90 -4 +10 ± 5% discs rated (stamped) burst pressure. 101 - 500 6,96 - 34,48 -4 +7 501 - up 34,54 - up -3 +6 3. Continental Disc Corporation can Cross Scored 40 - up 2,76 - up -10 +0 ± 5% manufacture rupture discs to comply Tension with ASME Code requirements. -0 +0 15 - 39 1,03 - 2,69 -2.5 psig +0 ± 2 psig -5 psig +0 -0 +0 Reverse Acting 40 - 49 2,76 - 3,38 -2.5 psig +0 -5 psig +0 ± 5% -0 +0 50 - up 3,45 - up -5% +0 -10% +0 3 CUSTOMIZED FOR SPECIFIC NEEDS High Pressure Assemblies Non-Fragmenting Designs Hermetic Seals In the chemical industry, many Continental Disc Corporation has the Various weld designs and methods applications require high pressure experience, technology and manufactur- are used to achieve sealing between systems in order to obtain specific ing techniques to provide rupture disc in the rupture disc and body assembly. chemical reactions. Many varieties various sizes and shapes designed for Examples in photo D are pressure of mating connections are available non-fragmentation This design may plugs used in hydraulic and liquid to meet the high pressure sealing involve a variety of scoring techniques, applications. The rupture disc is welded requirements of processing systems, passive and active mechanical opening to the top of a specially designed body as shown in photo A below. devices or petal retention designs. plug. Weld seals are used when leak- age is of critical concern. Weld seal High pressure rupture disc Photo C shows three non-fragmenting integrity can be tested at C.D.C. by assemblies used in the plastic and design units. C-1 and C-2 are reverse Mass Spectrometry to sensitivity levels rubber extrusion industry often require acting replaceable rupture disc of 1 x 10-9 Atm. cc/second helium. materials from one mil (.001) to sheet assemblies. C-3 is a cross scored or plate thickness. Some examples tension type design, suitable as a are shown in photo B. Quick Opening relief device actuated by an independent means. NOTE: All products were photographed C.D.C. maintains a complete on a 1/4 grid for scale. stock of coil and sheet materials in graduated thicknesses, including 316 Stainless Steel, Monel,®* Nickel, Inconel,®* and Hastelloy C®** to supply the burst pressure requirements of our customers. B Exotic alloys such as titanium, tantalum or niobium are also available. A Typical applications: Typical applications: Rubber, Plastic and Composite Material Extrusion Machine Down-hole Drilling System (Liquid) Reactor Vessel Process Piping (Petrochemical/Power Industry) Specialty Valves for Aircraft Oxygen Systems (Gas) Marine and Offshore Piping/Vessel Pressure Relief Missile/Rocket Pressure Vessel Relief (Gas) Aircraft Evacuation Systems (Gas) C D C-2 C-3 C-1 Typical applications: Gas Panels for Purity/Toxic Gas Typical applications: Missile/Rocket Quick-Opening Valve Aircraft Tire/Wheel Assemblies Air Conditioning/Refrigeration Storage Vessels Nitrogen Gas Springs/ Manifolds Air/Hydraulic Accumulators and Compressors Pneumatic Air Dryers Automotive/Aircraft Safety Restraint Systems * Monel and Inconel are registered trademarks of the Inco family of companies. ** Hastelloy is a registered trademark of Haynes International. 4 CUSTOMIZED FOR SPECIFIC NEEDS Unique Applications In aerospace and aircraft applica- Some unique applications are Titanium and other exotic alloys are tions, weight restrictions of system developed for one-time use and are frequently required for the advanced components often dictate the type of thrown away when the rupture disc has technology applications of the defense rupture disc design and/or materials burst. The assembly in photo F is a and aerospace industries. Photo G used. In photo E, a threaded design throwaway unit and provides protection is a welded reverse acting rupture disc is used, encapsulating the replaceable for a pressure blanket on electronics assembly used in a fuel generation rupture disc within an aluminum body. components. system. This rupture disc assembly is The light weight characteristics of the primary safety component used in aluminum make it possible to meet case of an overpressure condition. the weight restriction specified. (The photo shown is ghosted for illustration purposes.) NOTE: All products were photographed on a 1/4 grid for scale.
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