Vacuubrand vacuum pumps, gauges and controllers

Jaytee distribute and support the VACUUBRAND a range of vacuum pumps, gauges and controllers (for rough and fine vacuum) for laboratory use.

About VACUUBRAND

With 200 employees and more than 50 years of experience, VACUUBRAND manufactures the most comprehensive range of vacuum pumps, gauges and controllers for rough and fine vacuum for laboratory use. Based in Wertheim, Germany, the company focuses on design and build quality across their product spectrum.

Vacuum Systems for the Lab

Relying on state-of-the-art technology and machine tools, VACUUBRAND produce rotary vane and diaphragm pumps, chemistry pumping units, chemistry vacuum systems, vacuum gauges and controllers, valves and components of the innovative VACUU·LAN® local vacuum network.

The VACUUBRAND product range comprises:

  • powerful modular process vacuum systems
  • rotary vane pumps
  • oil-free diaphragm pumps
  • complete pumping units
  • flexible vacuum systems
  • solutions for local area networks

Specific products:

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VAC 24seven – from lab to process, chemical and pharmaceutical industries

Picture of the vac24seven

The new VAC 24seven series, which is now available for pilot and industrial scale applications, is a proven systems that takes the reliability of the individual pumps and combines them to produce a powerful modular process vacuum system:

  • For applications with involving aggressive and condensable gases and vapours, it provides a clean, oil- and contamination free vacuum source.
  • Inlet catch pots keep the pumps clean and dry. These are front mounted for easy access.
  • The VACUUBRAND VARIO® regulation provides vacuum “on demand” as required.
  • The central control unit determines the power required and controls the speed of the individual pumps accordingly during the entire process. This maximises the energy savings and extends the maintenance intervals.
  • The unique ability to service individual pumps during operation leads to a plant availability of 24 hours, 7 days per week – VAC 24seven.

Modular

The VAC 24seven product line is a modular system. Depending on requirements, up to three pump modules can be simply and economically combined with a single control module. This new combination option brings the outstanding properties of VACUUBRAND chemistry diaphragm pumps from the laboratory into the process environment.

At the heart of every pump module are two individual variable speed pumps. The pump modules are available in two different, speed controlled versions, with 5 mbar vacuum and 25 m3/h pumping speed or 70 mbar and 40 m3/h.

With VACUUBRAND’s proven CVC 3000 vacuum control technology, the control module provides both vacuum control, and the “demand-oriented” speed control of up to three pump modules.

Key benefits:

  • application-specific
  • combinable
  • central control unit and integrated vacuum regulator
  • pump modules for 70 mbar and 5 mbar

Precise control / energy saving

The vacuum control of the VAC 24seven product line is vac24seven modularprovided by the CVC 3000 controller. With its robust, chemically resistant capacitive ceramic diaphragm sensor, this provides excellent measurement and control accuracy for industrial applications. In addition to the large visual display and intuitive user interface, the controller also provides several modes of operation and programming options.

The VARIO® control technology controls the speed of the high-efficiency GREEN VAC® permanent magnet motors from 0-100 % as required. In contrast to conventional control technology with constant speed pumps, energy saving of more than 90% can be achieved depending on the nature of the process.

Designed for industrial requirements, the control module has various interface options for the integration of central control systems (BMS) or the direct controlling of external valves. The integrated LAN connector already contains a web-based software for remote control and documenting of the processes via a PC.

VARIO® control – vacuum control at its best:

  • on demand VARIO® control
  • incorporating highly efficient permanent magnet motors
  • more than 90 % energy saving
  • chemically resistant precise vacuum sensors
  • analogue and digital interface

No downtime

The chemically vac24seven no downtimeresistant stability core design of head cover and diaphragm clamping disc contributes to ensure that the diaphragm pump complies with the specifications over a long period of operation. Depending on the application an average service interval of 15,000 operating hours can be expected.

As the pumps run only temporarily at full speed, they can be decoupled separately for service purposes, without affecting the vacuum process. The speed of the remaining pump(s) is automatically adjusted by the controller. In this way, VAC 24seven ensures maximum system availability without the need for a duty standby pump.

Each individual pump is compact and can be removed by just one person. Of course, VACUUBRAND also offers demand- oriented service on site.
The VAC 24seven service concept – for maximum uptime:

  • 100% availability and continuous operation
  • easy in-operation maintenance procedure
  • no need for a backup pump
  • service intervals of up to two years
  • demand-driven service offers

Chemically resistant / 100 % oil-free

Diaphragm pumps are oil-free and therefore do not consume water and oil, nor do they generate waste oil either. With diaphragm technology, the pump chamber is completely hermetically sealed from the drive mechanism. The technology behind the chemistry diaphragm pumps from VACUUBRAND provide optimal performance and unrivalled years of reliability even for use in harsh chemical applications.
vacuubrand processes
Even for the most highly stressed components, the head cover and diaphragm clamping disc have a unique stability core technology which is produced through an elaborate multi-stage production process. The fluoropolymers and perfluoroelastomers materials ensure not only an outstanding chemical resistance, but also provide extremely low surface energy resulting in minimal surface adherence. VACUUBRAND only uses these high-quality materials for all its chemistry diaphragm pumps.
As a result, new functions are possible for both process and plant engineering – a process specific design of the vacuum pump for the particular application is not necessary:

  • universal resistance from VACUUBRAND chemistry diaphragm pumps
  • consistent operation from use of fluoropolymers and perfluoroelastomers
  • extremely long service life through globally unique stability core design
  • dry and 100 % oil-free technology

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Chemistry diaphragm pumps and pumping systems

Typical applications for chemistry diaphragm pumps include evacuating chemically aggressive gases and vapours from such equipment as rotary evaporators, vacuum drying cabinets and centrifugal concentrators.

Chemistry diaphragm pumps from VACUUBRAND feature uncompromising chemistry designs. Their construction with fluoropolymers makes them highly resistant to chemical vapours from inlet to exhaust and very tolerant to condensates. The two, three and four stage pumps also have a gas ballast valve that provides continuous purge with minimal impact on ultimate vacuum when working with condensable vapours. Pumping chambers are hermetically separated from the drive system ensuring long lifetimes of mechanical parts. Vacuubrand chemistry diaphragm pumps

Most importantly, diaphragm pumps are oil-free, for vastly reduced service demands compared with oil-sealed pumps. They eliminate the cost of water and its contamination well-known from water-jet aspirators, and the waste-oil disposal of rotary vane pumps.

Key benefits:

  • exceptional diaphragm lifetimes with ultra-durable PTFE sandwich design head cover and clamping disc made of fluoro compounds with stability core for unsurpassed long-term performance
  • very long service intervals for low lifetime cost-of-ownership
  • patented new drive system for extra quiet, ultra-low-vibration operation (NT)
  • patented new valve mounting system to simplify service access (NT)
  • smooth surfaces for easy cleaning (NT)
  • new sealing system provides reduced leakage rates for improved ultimate vacuum (NT)
  • PTFE sandwich diaphragms and valves made of perfluoro elastomer or PTFE
  • internal tubing and fittings made of PTFE/ETFE/ECTFE compounds

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Diaphragm Pumps

Diaphragm pumps
VACUUBRAND’s aluminium design diaphragm pump is a perfect match for many applications in the laboratory because it is oil-free and requires little servicing. Diaphragms have especially long lives, hermetically sealing the drive space from the pumping chamber in order to protect mechanical parts from corrosion.

The pumps achieve their distinctively high performance due to high pumping chamber volumes relative to the minimal dead space. Highly flexible FKM double diaphragms with fabric reinforcement ensure an extremely long diaphragm lifetime. The pumps operate absolutely oil free and do not have any sliding components in the gas path. During normal operation, they are completely free of abrasion.

Besides contributing to the long service intervals, the lack of abrasion also eliminates most of the particulate impurities frequently generated inside of scroll or piston pumps. This makes VACUUBRAND diaphragm pumps the right choice for clean applications.

Key Features:

  • innovative connections in the new NT models ensure very low leak rates for excellent flow rates under vacuum and long-term performance stability, even after thousands of hours of service
  • no abrasion, making it dust-free and contamination-free
  • long diaphragm and valve lifetimes: Made of highly flexible FKM, with fabric-reinforced double diaphragms for improved long term stability
  • new patented drive support system in NT pump models provide for uniquely quiet, low-vibration operation

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OEM and built-in Pumps

For more than 50 years, VACUUBRAND has been a proven business partner for OEM solutions in the laboratory, developing products that have been designed to meet the customers’ highest technical, budgetary and environmental standards. The company has maintained an ISO 9001-certified management system for many years and have developed production facilities that exploit state-of-the-art machinery and automatic testing equipment, giving a high level of flexibility.

There are multiple demands placed on the vacuum source in OEM applications, so to meet those requirements, VACCUBRAND look at all aspects of the project, identifying specifics:oem1oem2

  • What are the technology parameters?
  • How does the design need to be adapted to the installation situation?
  • What external certifications (e.g., according to UL and CSA standards) or special test specifications are needed?

Naturally, the product must also meet your budget; by utilising “ready-to-install” vacuum components, economic efficiencies can be achieved by saving you the need to purchase and store add-on components.
Finally, VACUUBRAND’s standard procedures include full documentation for OEM products, and there is a provision for you to verify technical parameters and consult test findings.

Typical customised modifications

  • choice of drives
  • adapted electrical connection and vacuum connection
  • flexibly adapting the control system (for instance, with VARIO-SP pumps)
  • using “compatible” materials
  • specifying and checking specific vacuum technology parameters
  • customized label and colour
  • product documentation

Diaphragm pumps with 24V DC drive particularly for integration into OEM products
In OEM applications, VACUUBRAND adapt their pumps to your installation requirements: Colour, motors, electrical interfaces, fastening and other parameters can be adapted to your design requirements. VACUUBRAND VARIO-SP pumps with 24 V DC drives are designed for integration into your equipment control wiring.
VARIO-SP diaphragm pumps from VACUUBRAND combine proven diaphragm and cylinder head technology with state-of-the-art drive and control technology.

This system component (SP = SystemPump) is frequently used in equipment or systems where it is beneficial and necessary to regulate vacuum parameters. The electronically commutated (brushless) 24V direct current drive is service-free and features unparalleled compact dimensions. The high-quality and flexible electronic drive system built into the pump makes it easy to integrate the vacuum pump into your overall system. Varying the motor speed makes maximum efficiency possible, including the option of controlling vacuum processes by changing the pump’s volume flow rate. Motor speed control also enhances performance features such as pumping speed, ultimate vacuum, diaphragm and valve live, vibration and sound levels and energy consumption. The motor speed may be set internally (fixed speed) or controlled via an external digital or analogue signal.

Features:

  • speed-variable from 400 to 2200 min-1 making possible shorter pump down times at high speed
  • improved ultimate vacuum at low speed
  • extended lifetime of diaphragms and valves
  • extremely compact, with flexible mounting positions
  • much quieter and much less vibration
  • lower energy consumption and lower waste heat
  • speeds can be set fixed or controlled with various external analog and digital signals
  • supply voltage 24 V DC for use all over the world
  • customised designs for overall system streamlining are a VACUUBRAND specialty

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Rotary Vane Pumps and Chemistry-HYBRID Pumps

Rotary vane pumps
Rotary vane pumps are used whenever it is necessary to have a process vacuum of up to 10-3 mbar. VACUUBRAND rotary vane pumps are high-performance, yet compact, and can be equipped with an extensive line of VACUUBRAND accessories.

The range contains an innovative lubrication system with a built-in oil pump and a large oil volume that extends oil change and service intervals, as well as protecting the pump at start-up. The effective gas ballast feature, with its high-flow gas ballast, provides high vapour pumping capability for water and solvents. VACUUBRAND rotary vane pumps’ volume flow rate is specified at atmospheric pressure, as is customary with PNEUROP®. For process efficiency, the high volume flow rate of VACUUBRAND pumps under process conditions, as well as a consistently high volume flow rate over a wide pressure range, is the key to your satisfaction in real-world application. After switch-off, the aggregate is vacuum-sealed to protect your application from undesired venting and oil back flow.

Key Benefits:

  • constriction-free vapour pathway allows high volume flow rates, even when close to the ultimate vacuum
  • high tolerance for water and solvent vapours, because of the high-volume gas ballast
  • quiet running and excellent ultimate vacuum, even with gas ballast
  • active corrosion protection: Oil cycle closes vacuum-tight against the intake of corrosive gases and oil impurities into the reservoir when shut down
  • new design lubrication circuit, and large usable oil volume provides extended oil change and service intervals
  • compact design, low weight and easy service with telescopic design

Product examples:

RZ 2.5

RZ-2.5 Rotary vane pumpThe one-stage RE 2.5 and two-stage RZ 2.5 are high-performance rotary vane pumps with extra compact design and low weight. They are the ideal solution for a wide range of laboratory and process applications that require low ultimate vacuum at medium gas flow rate. The rotary vane pumping unit PC 3 with cold trap (GKF 1000i) at the inlet helps the pump to handle larger volumes of condensable vapors. The pumping unit is compact, user-friendly, and well-arranged, with oil mist filter at the outlet, a valve, and a T-connection for a gauge. The RZ 2.5 is also available combined with the oil mist filter (FO) and the VS 16 valve as a package.

Performance features

  • high flow rates even at vacuum levels approaching ultimate vacuum
  • high water vapor tolerance due to efficient gas ballast; very good ultimate vacuum even with gas ballast
  • vacuum-tight at switch-off; external anti-suckback valve not needed
  • large oil volume: Long intervals between oil changes
  • ease of maintenance due to telescopic design

RC 6

RC-6 Rotary Vane PumpThe RC 6 chemistry-HYBRID pump is a combination of a two-stage rotary vane pump and a two-stage chemistry diaphragm pump for optimized corrosion resistance. The diaphragm pump maintains the oil reservoir under vacuum in order to keep the partial pressures of solvent vapours at levels below their condensation points and to reduce largely the concentration of oxygen and corrosive gases. Therefore the RC 6 chemistry-HYBRID pump has a much higher solvent vapour pumping capability and resistance to aggressive gases than conventional rotary vane pumps.

Performance features

  • reduced internal corrosion, even when working with corrosive vapors
  • oil changes typically reduced 90% or more compared with rotary vane pumps alone
  • excellent environmental friendliness due to efficient solvent recovery (accessory kit PC 8 with emission condenser; or as pumping unit PC 8)
  • most economical solution: In practical operation a cold trap is often no longer necessary. For large amounts of vapors a pumping unit PC 3 / RC 6 with cold trap at the inlet is available
  • ease of maintenance due to telescopic design

PC 3 / RZ 6

PC-3-RZ-6 Rotary VaneThese powerful rotary vane pumps feature a particularly compact design and low weight for pumps of this capacity. They are the ideal solution for a wide range of laboratory and process applications that require low ultimate vacuum at medium to increased gas flow rate. The PC 3 rotary vane pumping unit, with GKF 1000i cold trap at the inlet, helps the pump to handle large amounts of condensable vapors. The PC 3 pumping unit is compact, user-friendly and well-arranged, with an oil mist filter at the outlet, a valve and a T-connection for a gauge. Various packages including pump, oil mist filter, etc. are available.

Performance features

  • high flow rates even at vacuum levels approaching ultimate vacuum
  • high water vapor tolerance due to efficient gas ballast; very good ultimate vacuum even with gas ballast
  • vacuum-tight at switch-off; external anti-suckback valve not needed
  • large oil volume: Long intervals between oil changes
  • ease of maintenance due to telescopic design

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High-vacuum Pumping Units

HP 40 B2
High-performance, reliable vacuum equipment is essential for successful and time-saving work in many science laboratories.
HP 40 B2 High-vacuum pumping
The VACUUBRAND high-vacuum pumping units satisfy these needs and fulfil practical requirements, providing high vacuum to 10-6 mbar. These pumping units consist of an air-cooled diffusion pump, a two-stage rotary vane pump as a backing pump (either RZ 2.5 or RZ 6) and all connecting parts, including high-vacuum valve, ventilation valve and a bypass line. The pumping unit HP 40B2 with RZ 6 provides higher pumping speed in the pump down phase and is additionally equipped with an oil mist filter FO.

Performance Features:

  • efficient – The powerful rotary-vane backing pumps generate the necessary backing pressure so that the diffusion pump can always attain its full pumping speed and an ultimate vacuum of approx. 10-6 mbar (measured with VACUUBRAND pump fluid and cold trap with liquid nitrogen).
  • fast – The pumping unit has a high-vacuum valve at the inlet and a rough vacuum line (bypass). This makes it particularly efficient for rapid evacuation cycles.
  • clear directions – Smaller experimental set-ups can be mounted directly on the pumping unit. A clearly visible, condensed operating diagram on the housing of the diffusion pump provides guidance and helps to prevent operating errors. The diffusion pump can only be switched on if the rotary vane pump is running. All valves and switches are operated from the front.

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Fluid Aspiration Systems

Fuild aspiration systems

The compact BioChem-VacuuCenter (BVC) offers the perfect solution for safe, sensitive and efficient aspiration of supernatants in all application areas.

The BVC Basic is intended for connection to an external vacuum source. The BVC Control and the BVC Professional are equipped with a high performance, chemically resistant diaphragm pump. The vacuum level and thus the suction force at the hand control can be sensitively adjusted via a touch panel. In addition, the BVC professional features a non-contact liquid level sensor and self-closing quick couplings (4 litre PP bottle version).

All systems are available either with a vacuum-resistant, autoclavable 4 litre PP bottle or with a 2 litre borosilicate glass bottle, e.g., for working with aggressive disinfectants such as chlorine bleach.

Flexibility and comfort:

  • 4 litre PP or 2 litre glass bottle – for a perfect fit with process protocols (glass version, e.g., for chlorine bleach).
  • compact size with control handle – for flexible, space-saving setup with perfect ergonomics .
  • very low noise levels in operation – to work comfortably in daily routine.
  • sensitive suction power adjustment via touch panel – for sample protection and reproducible results.
  • vacuum pump that responds automatically to demand – no foot pedal switch needed.

Economic efficiency:

  • powerful chemical-resistant diaphragm vacuum pump with a very long service life even when working with aggressive disinfectants – minimal costs for maintenance and spare parts.
  • ready to accept a second hand controller – double use for lower cost per user.
  • high-quality components for trouble-free operation in continuous professional use.

Safety:

  • 0.2 micron protection filter – high protection against contamination of the environment.
  • hand controller with flow-through suction tube – no contamination of handle with aspirated media.
  • collection flask made of PP or coated borosilicate glass – completely autoclavable, with 0.2 micron protection filter.
  • 2 litre borosilicate glass flask for high chemical resistance, with splinter-proof coating for safety and leakage protection.
  • BVC professional includes liquid-level sensor to prevent aspiration of liquids into pump. Self-closing couplings (4 litre PP bottle version) for safe removal of bottle for change and transport.

Products:

There are 6 products in the range – please see the comparison chart below:
Fluid aspiration comparison chart

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Vacuum Gauges and Controllers

Vacuum gauges controllers
Vacuum control ipad
State-of-the-art vacuum gauges for laboratory and industrial operation have to meet high standards in terms of gauge head resistance to chemicals, reliability in rugged applications and operator-friendly interfaces. VACUUBRAND has a comprehensive range of electronic measuring instruments for the range of atmospheric pressure to 5 x 10-9 mbar.

Many applications in the laboratory call for electronic vacuum control, that is, constantly adapting the pump’s volume flow rate to process requirements. The maximum volume flow rate of the unregulated pump can be changed in various ways:

  • by cyclically turning the pump on/off (with the VNC 2 controller or the CVC 3000 controller with module VMS-B)
  • by cyclically opening/closing an in-line solenoid valve (CVC 3000 or VNC 2) or
  • by changing the pump’s motor speed continuously (VARIO® pumps in connection with CVC 3000 or VNC 2 VARIO)

Product examples:

VACUU·VIEW extended

VACUU·VIEW extendedFor the monitoring of your vacuum processes in the rough and fine vacuum range, the new vacuum gauges VACUU·VIEW extended are perfect! The heavy duty combination of ceramic diaphragm sensor and ceramic jacketed Pirani sensor ensures reliable readings in the wide range from atmosphere down to 10-3 mbar.

Performance features

  • precision and chemical resistance in an exceptionally wide range from atmosphere down to 10-3 mbar, one gauge only for both rough and fine vacuum
  • compact design with integrated sensors for useful setup in laboratory and process
  • the chemical resistant combination of ceramic diaphragm sensor and ceramic jacketed Pirani sensor ensures a long product life even with aggressive chemicals
  • illuminated display, easy to read
  • display with menu driven handling, easy to use e.g. for unit settings

CVC 3000 detect

CVC 300 detectThe CVC 3000 detect is a ready to use two-set-point vacuum controller – available both as bench-top device and as a unit designed for attaching to a lab scaffold. It consists of the vacuum controller CVC 3000 with integrated ceramic vacuum sensor and vent valve that forms together with a non-return valve and the chemically resistant solenoid valve a very compact and easy to install unit for vacuum control. For available vacuum sources such as oil-free vacuum pumps that you already own and efficient vacuum network supplies, the electronic control increases the process efficiency and decisively elevates the solvent recovery. In the “detect” mode the controller does approach and detect independently the boiling pressure and switch to the two-point vacuum control mode. Manual settings are possible at any time during current operation.

Performance features

  • detect function for independent vapor pressure detection – time saving for other tasks
  • compact unit with chemically resistant vacuum valve and common laboratory hose connections – immediately ready for use
  • the vacuum measuring is integrated within the valve block – direct connection of the CVC 3000 detect between pump and vacuum application
  • integrated venting valve – simple pressure balance or ventilation with inert gas at the end of the process
  • non-return valve – no interference of parallel applications at a common vacuum source

VACUU·CONTROL®

VACUU CONTROLThe web-based remote control VACUU·CONTROL® enables the monitoring and control of vacuum pumping units via computers or mobile devices such as Smartphones. With the LAN or WLAN adapter all pumping units and vacuum systems equipped with the CVC 3000 vacuum controller or a DCP 3000 vacuum gauge can be integrated into a computer network (Exception: fine vacuum control with CVC 3000 is not supported). In this way it is possible for multiple pumping units to be controlled or monitored from a single PC on the one hand or alternatively an individual pumping unit can be observed from several devices. The vacuum system can be operated fully and simultaneously at any time directly at the pumping unit. With the built-in datalogger function, processes are automatically documented. Notification of the end of the process automatically appears when a selective pressure is reached or after a set time.

Performance features

  • remote monitoring and controlling of pumping units or vacuum systems with CVC 3000 or 3000 DCP through easy integration with computer networks
  • full simultaneous operation via the CVC 3000 / DCP 3000 or by remote control
  • LAN and WLAN-adapter enables the control with fixed or mobile devices (PCs, smartphones, tablets, notebooks etc.)
  • available as an add-on for all CVC 3000 and DCP 3000 from software version 2.0 onward (2009)
  • process documentation via integrated data logger and notification signal at the end of the process

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Vacuum Valves and Small Flange Components


VACUUBRAND manufacture their own valves and components, and inspect them carefully before shipment to ensure integrity.

The wide range of vacuum valves and small-flange components can be used alone or in combination, in the most simple or complex vacuum systems. Components are appropriate both for connections to VACUUBRAND pumps and for all valves and components with DIN 28403 (ISO 2861-1) small flange (KF) dimensions.

Many components and subassemblies are available in stainless steel, aluminium, brass or plastic.

VACUUBRAND offer elastomer seals made of NBR and FKM as well as metallic seals made of aluminium or indium, and provide a great variety of resilient connecting elements and small-flange components that serve most vacuum system needs.

VACUUBRAND clamping rings Vacuum valve Stainless steel components
Clamping rings and centering rings
Vacuum valve VS
Stainless steel components

Ball valves

They are the simplest type of shut-off device. They open up the entire cross-section. Therefore they can be used with load lock chambers.

Diaphragm valve

VM diaphragm valves are engineered for applications with corrosive and aggressive gases and vapors. Stainless steel housings and PTFE diaphragms offer excellent resistance for use in chemistry laboratories.

High-vacuum bellow valves

Stainless steel bellows-sealed angle valves with valve body made of aluminum or stainless steel (WIG). The VE WIG series valves with tungsten inert gas-welded valve body meet the toughest standards in terms of leak rate, outgassing and baking-out for the high vacuum range.

In-line valves

VS series valves are space-saving butterfly-type in-line valves with good conductance.

High vacuum right angle Gas inlet valve Ball valve VKE
High-vacuum right angle bellow valve VE
Gas inlet valve VGL
Ball valve VKE

Connection elements for small flange components

The sealing ring for the seal between two components is held in place by the centering ring. The clamping ring is used to hold and mechanically compress the sealing ring.

Clamping rings

Aluminium clamping rings with a wing nut are a rapid connection that can be mounted without any tools for soft (primarily rubber-elastic) seals and indium seals.

Centering rings

Centering rings made of stainless steel are self-centering with sealing ring at the outside.

VACUUBRAND trapped O-ring centering ring

The trapped O-ring centering ring is externally centered on the outside diameter of the small flange. The seal is pressed into a radius on the inside of the centering ring so that there are no gaps on the vacuum side. External centering allows the same ring to be used for two consecutive standard-rated widths (such as KF DN 10/16). This also makes transitional centering rings unnecessary.

Centering rings Cross pieces PTFE vacuum tubing
Centering rings
Cross Pieces with small flanges KF
PTFE vacuum tubing with small flanges KF

Small flange components

VACUUBRAND small flange components have particularly reliable sealing properties because the sealing surfaces are lathed for optimum surface roughness. Application range: Up to high vacuum at approximately 10-6 mbar. Aluminum components are tested to a leakage rate of < 10-6 mbar l/s, stainless steel components are tested to < 10-9 mbar l/s.

Flexible connection elements

Flexible hoses made of natural rubber or PVC are enjoying great popularity in laboratories. For more demanding applications VACUUBRAND offers special hoses made of antistatic PTFE with small flanges made of 1.4305 stainless steel. The PTFE tubing is virtually smooth-walled on the inside with high conductance and minimal surface area, which keeps condensate from accumulating like in corrugated hoses. The antistatic PTFE has excellent resistance to chemicals and antistatic properties (< 107 Ohm resistance between the inside and flanges) to prevent electrostatic charging. Stainless steel bellows and corrugated hoses with TIG-welded small flanges meet high requirements in terms of outgassing and cleanliness. These metallic hoses are made of 1.4541 stainless steel and are vacuum annealed.
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