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Roughing components
Roughing components
This document provides comprehensive information on foreline traps used in vacuum systems, detailing their specifications, maintenance, and applications. The main types discussed are molecular sieve traps, coaxial traps, and liquid nitrogen traps.
Molecular sieve traps use type 13X synthetic zeolite to prevent oil backstreaming and trap water vapors at room temperature. They can adsorb molecules up to 10 angstroms in diameter and can be reactivated by heating to 150°C. Regular replacement of the sieve material is necessary when hydrocarbon saturation occurs.
Coaxial traps are designed for easy maintenance and operate at room temperature. They effectively trap hydrocarbons from roughing pumps and come in single-piece and two-piece designs, with replaceable filter elements available in various materials.
Liquid nitrogen traps remove condensables before they enter the pump, providing complete water trapping. They can be equipped with a coolant level controller for automatic replenishment, with performance varying based on application and conditions.
- Molecular sieve traps are effective for oil and water vapor trapping, requiring periodic maintenance.
- Coaxial traps offer low maintenance and are suitable for trapping hydrocarbons, with replaceable filter options.
- Liquid nitrogen traps are ideal for complete water vapor removal, requiring specific maintenance schedules.
The document emphasizes selecting the right foreline trap based on application needs and ensuring regular maintenance for optimal performance.
The document details cryogenic sorption pumps and vacuum hose accessories, focusing on specifications, procedures, and components used in vacuum systems.
Sorption pumps use liquid nitrogen, requiring no electrical power or moving parts. A single pump can evacuate a 100-liter chamber to 10-2 Torr in about 10 minutes, with a capacity of 60,000 Torr-liters.
Pumps are constructed with aluminum bodies and internal fins, using Type 5A synthetic zeolite. Flanges are made of 304 stainless steel, and dewars are high-density rigid polystyrene.
Pumpdown curves illustrate the performance of single and multiple pump systems, with models like the SP-150 and SPS-2-150 detailed.
Various accessories are available, including manual right-angle valves and thermocouple gauge tubes, with part numbers and prices listed.
The document describes wire-reinforced PVC hoses and flexible stainless steel hoses, suitable for different vacuum applications.
Includes PVC fittings, access flanges, up-to-air valves, pressure burst discs, and leak detector port reducer kits.
Emphasizes using appropriate materials and configurations for specific vacuum applications to ensure system efficiency and safety.
This document is a technical catalog from MDC Vacuum Products Corporation, detailing components and accessories used in vacuum systems.
- Features weldable tube ends and thin wall options, made from 321 stainless steel bellows and 316L tube ends.
- Low vacuum rated and made from corrosion-resistant PVC, suitable for roughing lines.
- Del-Seal™ CF flanges available with accessory holes, high vacuum rated.
- Bellows sealed, manually activated valves for venting and backfill.
- Safety devices for protecting vacuum systems against overpressure.
- Includes anti-galling lubricants, vacuum greases, and epoxy sealants for various applications.
Catalog excerpts
Foreline Traps Introduction244 Molecular Sieve246 Coaxial248 Coaxial with Replaceable Filter250 > Liquid Nitrogen254 Vacuum Pumps Introduction256 Cryogenic Sorption258 Vacuum Roughing Hose PVCWire Reinforced Hose262 Flexible Stainless Steel Hose263 Del-Flex > Process Lines271 PVCRigid Tubing &Fittings278 Accessories Double Sided Access Flange282 Up-to-Air Valves283 Burst Disc &Test Port Kit284 Lubricants285 > 243 size="-2">
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Shown with Dual-Element Cartridge Coaxial,single piece trapspage 248 > Roughing Components Centering ringReplaceable filter element TubeBand clampTrap body Connection Coaxial,two piece trapspage 250 Liquid nitrogen trapspage 254 >
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Atyp Tube dia B Body dia Overall height Body height Rotatable flange Fixed flange Sieve material Heater element > Roughing Components Atyp Tube dia B Body height Overall height > Body dia Filler plug Atyp Tube dia B Body height Overall height Ground lug >
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Rotatable flange Tube dia Clamp dia Body height Overall height > Fixed flange > Roughing Components Body height Overall height > Body dia Tube dia Clamp dia > Ι Body height Overall height >
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Features ■ Easy exchange of cartridges ■ Metal sieve units are reusable ■ Use with two-piece coaxial trap bodies detailedon page 251 > Roughing Components Description > Two-piece coaxial foreline traps offer a wide selection of replaceablefilter element materials.Filter elements for a two-piece trap are removable stainless steel screen cartridges filled with copper, stainless steel or bronze wools,activated alumina,activated carbon or dual element absorbent material.Metal wool filter elements are used primarily for the trapping of pumpoil backstreaming through a vacuum system.During pump operation,...
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Sorption roughing pumps or sorption pumpsare used for pumping systems from atmospheric pressure to a pressure of approximately 10 -2 Torr.They rely on thedispersion forces existing between a gas and a surface to bind gas molecules on chilled surfaces inside the pump.In other words, they pump by cryosorption.Sorption pumps typically consist of acylindrical canister or body that is filled with an adsorbent material.The adsorbent is usually a molecular sieve material,or zeolite, which consists of pellets made of a calcium or a sodium aluminosilicate crystalline matrix.The canister is placed in a...
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1-1/2" Angle Valve, Model AV-150, 3 places Bourdon style vacuum gauge Tee fitting, Model 150-3 Up-to-Air valve > Roughing Components Sorption Pump, Model SP-150, 2 places T/C gauge tube (far side) Polystyrene dewars ҕ2-3/4" Del-Seal > CF flanges are joined using copper gasketsٕLiquid nitrogen supplied by user > -2 Performance of OneStandard Pump(Pumpdown AfterBackfilling with Air)Performance ofStandard Pumps inMultiple Stages(Pumpdown AfterBackfilling with Air) > 1st Pump 1st Pump 2nd Pump 10100760 200 Liter Volume 1 100 Liter Volume 100 Liter Volume 10 > -1 2nd Pump PRESSURE, IN TORR 20 Liter...
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Shown installed in polystyrene dewar flange, nonrotatable with clearance holes Pressure relief stopper & chain Retaining screen prevents backflow of sorbent material Support bracket, 3 places Liquid nitrogen, supplied by user AA Roughing Components 16-3/4 2-3/4" Del-Seal Type 5A synthetic zeolite sorbent material Double Sorption Pump System 12-1/4 SP-150 pump, aluminum body and internal fins Polystyrene dewar, purchased separately Material Pump,wall and internal finsAluminumFlanges304ss > VIEW A-A Pump only DewarHigh density rigid polystyrene Fastening Bolts,.250-28 UNF12 lb-ft Vacuum Range 5x10...
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2-3/4" Del-Seal > CF flange, nonrotatable with clearance holes > ٙ 15.25 4.50 dia > PARTNUMBER PRICE$ REFERENCE Includes three brackets SP-150 > 26.6 20.7 > PARTNUMBER PRICE$ 17.7 > REFERENCE SPS-2-150 > 26.6 20.7 > PARTNUMBER PRICE$ 27.6 > REFERENCE SPS-3-150 > 4075 > HIGH DENSITY POLYSTYRENE TYPE 5A SYNTHETIC ZEOLITE VITON ծ ELASTOMER Accessories shown at rightare ordered from the tableon the facing page > PART NUMBER 500001 > PART NUMBER 500002 > PART NUMBER 500003 > PART NUMBER 950011 >
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Small Diameter Process Lines MDC Del-Flex MDC 03 Section 3 9/27/03 2:51 PM Page 260 Wire Reinforced PVC Hose CF metal seal flanges provide acomplete metal air-to-vacuum seal required for UHV applications.Note that the large and convoluted internal surface area will require lengthy pumping to achieve UHV pressures. Stainless steel roughing lines are available in a very flexible thin wall configuration and a less flexible medium wall configuration.Care must be taken when installing thin wall hose so as to not exceed the specified bend.MDC recommends that all thin wall hose be used primarily for...
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Roughing Components Phone 800-443-8817 www.mdcvacuum.com MDC Vacuum Products Corporation >
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PVCKwik-Flange ISOKF ٙ Roughing Components Material FlangesPVC TubingType 1 Grade PVC,ASTM D-1785,Sched 80 O-ringsViton > ٮ ,Buna-N > Centering ringsStainless steel ClampsAluminum > Fastening ClampsHinged O.D. MDC Inches ISO mmInches Thread Size10-32 UNC K075.75 NW1616.63 TorqueFinger-tight K1001.00 NW2525.98 Vacuum Range 5x10 > -3 Torr K1501.50 NW40401.57 K2002.00I.D. NW50501.97 Temperature Range Ambient to 60ΰC maximum Weight and Dimensions See table > PARTNUMBER PRICE$ DESCRIPTION REFERENCE PVCPRIMER 1000PVCCEMENT 1000 PVCP-1000PVCC-1000 728032728033 > 1112 PVCCEMENT 1000 For all sizes and...
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Roughing Components Flange O.D. .265" dia, 6 places on a 2.312 BC 2.65 T Approximate dimensions for reference only > NOMINALFLANGEFLANGEWTFLANGEREF.O.D.TDESCRIPTIONLB F133000-VF218000-V F275000-V > PARTNUMBER PRICE$ REFERENCE 1-1/3F1330001.33.285DEL-SEAL FLANGE WITH 1/4" UP-TO-AIR VALVE3/42-1/8F2180002.12.470DEL-SEAL FLANGE WITH 1/4" UP-TO-AIR VALVE1 2-3/4F2750002.73.500DEL-SEAL FLANGE WITH 1/4" UP-TO-AIR VALVE1-1/2 >
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WTDESCRIPTIONOZ PARTNUMBER PRICE$ REFERENCE FEL-PRO > C-1021 FEL-PRO C-102 > 12 ΕAnti-galling lubricant for threadsHigh temperature lubricant ՕTemperature range to 1315CЕLead-free petroleum distillate Contains calcium fluoride and graphite Օ1 oz.tube > WTDESCRIPTIONOZ PARTNUMBER PRICE$ REFERENCE DOW CORNING VACUUM GREASE DC-1505.3 DOW DC-150 > 25 > Roughing Components Elastomer gasket sealantՕGear and bearing lubricant Heat stable ՕTemperature range -40C to +260аC Low vapor pressure ՕInert,resists most chemicals 5.3 oz.tube > WTDESCRIPTIONOZ PARTNUMBER PRICE$ REFERENCE APIEZON > ծ VACUUM GREASE...
Open the catalog to page 43All MDC vacuum products catalogs and technical brochures
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