Vacuum pumps
Vacuum pumps generate the required level of negative pressure for filtration, evacuation and distillation in the laboratory. LT Laborhandel stocks IKA diaphragm vacuum pumps from the VACSTAR series, as well as KNF LABOPORT systems, some of which feature a digital controller for precise pressure regulation. You can find further pumping equipment in the ‘Laboratory Pumps’ category and under ‘Drum Pumps’. Please contact us for advice on selecting the right pump based on ultimate vacuum and suction capacity.
KNF LABOPORT N 96 mini diaphragm vacuum pump, chemical-resistant, speed-controlled, 7 l/min, 322806
Compact performance for the laboratory workstation: KNF LABOPORT ® N 96 The KNF LABOPORT ® N 96 redefines what a compact laboratory pump is capable of. With MPN 322806, you get a highly flexible system that has been specially developed for applications where space-saving design, chemical resistance and precise control are required. Despite its very small footprint, this mini diaphragm vacuum pump delivers impressive performance and is ideal for filtration, solid-phase extraction (SPE), the removal of liquid supernatants or as a fore-vacuum pump for turbomolecular pumps. Chemical resistance meets maintenance-free operation A key advantage of the N 96 is its choice of materials. The pump head is made of robust PPS (polyphenylene sulphide), the diaphragm is PTFE-coated and the valves are made of FKM. This combination makes the pump extremely resistant to aggressive gases and vapours. Unlike oil-lubricated rotary vane pumps, the diaphragm principle of the N 96 operates 100 per cent oil-free. For you, this means: no contamination of your samples by oil vapours, no disposal of waste oil and completely maintenance-free operation in day-to-day laboratory work. You can transfer, evacuate and compress samples accurately and cleanly. Integrated speed control for gentle processes The LABOPORT ® N 96 is not simply ‘On’ or ‘Off’. It features integrated speed control, which is operated intuitively via a rotary knob on the top. This allows you to adjust the flow rate continuously to suit your process – from gentle suction right through to full power. The visual status indicator is particularly innovative: the colour of the LED lighting on the rotary knobs changes depending on the operating status (e.g. standby, operation), so you can see immediately – even from a distance – what the pump is currently doing. Quiet, low-vibration and space-saving In modern laboratories, space is at a premium and noise is a nuisance. The N 96 scores highly in both respects: with its extremely compact design, it fits into any nook or directly into the fume cupboard without blocking valuable worktop space. Thanks to its advanced diaphragm technology and brushless DC motor, it also operates very quietly and with minimal vibration. This is easier on the user’s nerves and allows for concentrated work right next to the unit. Versatility in application and pressure Although primarily known as a vacuum pump (ultimate vacuum < 130 mbar abs.), the N 96 can also be used as a compressor, delivering a working overpressure of up to 2.5 bar. The flow rate of up to 7 litres per minute (at atmospheric pressure) ensures rapid results during filtration. The plug-in power supply with wide-range input allows for use worldwide. Detailed technical specifications Flow rate (max.): 7 l/min (0.42 m³/h) at atmospheric pressure Final vacuum: < 130 mbar (abs.) Operating pressure: 2.5 bar Pump head material: PPS (polyphenylene sulphide) Diaphragm material: PTFE-coated Valve material: FKM Hose connection: For hoses with an ID of 6 mm Permissible fluid and ambient temperature: +5 °C to +40 °C Voltage: 100–240 V, 50/60 Hz (wide-range power supply) Protection rating: IP 40 Dimensions (W x H x D): 75 x 119 x 156 mm Weight: 1.3 kg Special features: Speed-controllable, status LED, chemical-resistant Contents 1 x KNF LABOPORT ® N 96 diaphragm vacuum pump 1 x mains adaptor (multi-plug) Operating instructions Custom requirements & accessories Do you need suitable vacuum hoses, fine-adjustment valves or suction bottles for your filtration setup? We stock the full KNF range as well as compatible laboratory accessories. Contact our procurement service for personalised advice.
KNF LABOPORT ® N 840 G diaphragm vacuum pump, 317123/315994
Type N840G The N 820 G / N 840 G vacuum pumps can be manually controlled using a rotary knob, making them suitable for a wide range of applications. Thanks to their speed control, the pumps are highly energy-efficient and quiet in operation. These chemically resistant diaphragm pumps are suitable for highly aggressive gases. They are characterised by a very small footprint, saving valuable space in the laboratory. The pumps of the new LABOPORT® generation feature an easy-to-clean surface. Applications: including rotary evaporation, distillation, gel drying, degassing, LABOPORT® diaphragm vacuum pumps, Type N 820 G / N 840 G :- Flow rate up to 2.04 m³/h- Adjustable via integrated speed control- Ultimate vacuum 6 mbar abs .- TFMTM PTFE pump head in combination with a PTFE-coated diaphragm is ideal for highly aggressive/corrosive gases and vapours- High vapour and condensate compatibility- Integrated gas ballast valve- 3-colour status indicator for In operation / Standby / Fault- Expandable: Simply purchase and fit the separator and/or condenser separately .- ATEX-compliant in accordance with II 2/-G IIB+H2 T3 (internal atmosphere only )- 100% oil-free pumping – ensuring unadulterated pumping, evacuation and compression
KNF LABOPORT vacuum pump system ® SH 820 G, 325234/313452
Chemical-resistant vacuum pump system comprising a chemical-resistant diaphragm vacuum pump, base plate, separator on the inlet side and high-performance condenser on the outlet side. Thanks to its high vapour and condensate compatibility, it is ideally suited for aggressive/corrosive gases and vapours Advantages: Flow rate (max.): 20 l/min Ultimate vacuum (max.): 6 mbar (abs.) Ideal for highly aggressive/corrosive gases and vapours High vapour and condensate resistance Integrated gas ballast valve Integrated speed control Technical specifications: Pumping speed (max.): 20 l/min Ultimate vacuum (max.): 6 mbar (abs.) Operating pressure (max.): 0.1 bar (rel.) Weight: 11.7 kg
IKA VACSTAR lite Starter Solution, diaphragm vacuum pump, including emission condenser, 2 mbar, 0010014496
Part of the IKA Specials Q4/2026, valid until 31 December 2026. The crossed-out price is IKA's recommended list price. Our promotional price is net.Compact, high-performance equipment for your laboratory: the IKA VACSTAR lite Starter Solution With the IKA VACSTAR lite Starter Solution (MPN 0010014496), you get a perfectly coordinated vacuum package that combines space-saving design, high suction power and environmental awareness. This 4-cylinder diaphragm vacuum pump has been developed to handle the demanding tasks of everyday life in a modern laboratory – whether as a partner for your rotary evaporator, for drying cabinets or for filtration tasks. For you, the ‘Starter Solution’ means: unpack, connect and start safely, as the essential safety emission capacitor (VSE 1) is already included in the scope of delivery. Small but mighty: performance in a minimal space The VACSTAR lite impresses with its award-winning, extremely compact design. With dimensions barely larger than a drinks bottle, this pump fits into even the smallest of nooks or directly inside a fume cupboard. But don’t be fooled by its size: with an impressive pumping speed of 22 l/min and an outstanding ultimate vacuum of 2 mbar, it’s right up there with the big players. This high pumping speed guarantees fast process times and efficient operation, even with low-boiling-point solvents. Protection for the laboratory and the environment: the safety emission condenser A highlight of this set is the included VSE 1 vacuum safety emission condenser. Vacuum pumps extract vapours that should often not simply be released into the room air. The VSE 1 reliably prevents solvent vapours from entering the laboratory atmosphere. This not only protects staff health from harmful emissions but also safeguards the environment. Furthermore, the condenser enables the effective recovery of valuable solvents, which reduces operating costs and promotes sustainable working practices. Chemical-resistant and low-maintenance As a dry diaphragm pump, the VACSTAR lite operates 100% oil-free. For you, this means: no tedious oil changes, no disposal of waste oil and no contamination of your samples by oil vapours. All parts in contact with the process fluid are made from high-quality, chemical-resistant materials (PTFE diaphragms, FKM valves, etc.). This makes the pump extremely resistant to aggressive chemicals and vapours, guaranteeing a long service life and low maintenance costs. Intuitive operation and process reliability The “lite” version focuses on the essentials: pure functionality. Operation is intuitive via a rotary knob, which allows you to continuously adjust the speed and thus the suction capacity. This enables the process to be started gently to prevent boiling delays, or ramped up to maximum performance. An integrated non-return valve also protects the system against backflow when the pump is switched off or in the event of a power cut. Technical specifications in detail Type: 4-cylinder diaphragm vacuum pump Max. pumping speed: 22 l/min (1.32 m³/h) Ultimate vacuum: 2 mbar (abs.) Control: Speed control via rotary knob (manual) Materials (in contact with the medium): Al₂O₃, PTFE, FKM, PP, PPS (chemical-resistant) Connection: Hose nozzle Ø 8 mm Sound pressure level: 54 dB(A) (pleasantly quiet) Protection class: IP 20 Dimensions (W x H x D): 150 x 375 x 270 mm Weight: 5.75 kg Special feature: Includes VSE 1 emission capacitor Contents 1 x IKA VACSTAR lite vacuum pump 1 x VSE 1 vacuum safety emission condenser 1 x vacuum hose 1 x power supply unit (multi-plug) Operating instructions Individual requirements & accessories Do you also require a digital vacuum controller (e.g. VC 10) for fully automatic distillations, or Woulff flasks to protect the pump from liquid hammer? We stock the entire IKA vacuum range. Please contact our procurement service for system advice.
IKA VACSTAR digital Vacuum Pump, Diaphragm Pump with Digital Speed Display, 22 l/min, 0020016236
The IKA VACSTAR digital (MPN 0020016236) is a dry 4-chamber diaphragm vacuum pump with digital speed display. Anyone who has so far operated a purely analogue pump without feedback on the current speed can see here at a glance which setting is currently in use, without depending on full automation. The VACSTAR digital is thus positioned between the purely manual VACSTAR lite and the VACSTAR control with integrated vacuum controller: more control than with a purely analogue pump, but without the additional cost of a permanently installed controller when it is not yet needed for the application in question. Digital display with simple turn-and-push operation The parameters are set with a turn-and-push knob, and an LED display shows the current speed in real time. The pumping speed of 22 l/min (1.32 m³/h) and an ultimate vacuum of 2 mbar reliably cover typical tasks such as rotary evaporators, drying ovens or filtrations. The speed range extends from 285 to 1200 revolutions per minute, regulated by an analogue speed-vacuum control with two-point control for stable, readily reproducible process behaviour. Prepared for later automation An analogue cable for connecting an external vacuum controller of type VC 10 is already included in the scope of delivery. Anyone who wants to run automated processes, for example a programmed distillation ramp, can extend the pump with the VC 10 at any time without having to buy an additional connecting cable and without having to replace the pump itself with another model. For the protection of laboratory air and the environment, the VSE 1 vacuum safety emission condenser is also recommended. It prevents solvent vapours from being released into the room air and can be retrofitted at any time if required. Chemically resistant and designed for continuous operation All parts in contact with the product are made of Al2O3, PTFE, FFPM, PPS and NBR, and the housing of coated die-cast aluminium and thermoplastic. As a dry-running pump, the VACSTAR digital works entirely without operating oil, so oil changes and the disposal of waste oil are eliminated and samples cannot be contaminated by oil vapours. This combination of materials makes the pump particularly resistant to aggressive solvents and ensures low-maintenance continuous operation in everyday laboratory work, even with daily changes between different solvents. Connection, format and operating values With dimensions of 150 x 375 x 370 millimetres and a weight of 11.5 kilograms, the VACSTAR digital is designed for a fixed place at the laboratory workstation, for example next to a rotary evaporator or drying oven. It is connected to 100 to 240 volts at 50 or 60 hertz with a device power consumption of 130 watts in operation and 3 watts in standby. Both an RS232 and a USB interface are available for connection to laboratory software, and the housing is classified IP 20. Robust design for daily laboratory use The lower housing made of coated die-cast aluminium in combination with thermoplastic components is designed for daily continuous use in the laboratory and withstands occasional solvent splashes without visible damage to the housing. The permissible ambient temperature of 5 to 40 degrees Celsius and a tolerated relative humidity of up to 80 percent at 31 degrees Celsius, decreasing linearly to a maximum of 50 percent at 40 degrees Celsius, make the pump suitable even for laboratories without continuous air conditioning. With a sound pressure level of 54 dB(A) at minimum pressure, operation next to the workstation remains pleasantly quiet. Typical applications As a digital intermediate step between manual operation and a fully integrated controller, the VACSTAR digital is particularly suitable for the following applications: Rotary evaporator operation with direct reading of the current speed instead of estimating from the scale on the knob Vacuum drying in drying ovens with a traceable speed setting that can be read on the display Vacuum filtration in the routine laboratory where digital control without full automation is already sufficient Laboratory workstations that are to be retrofitted later with a VC 10 vacuum controller for full automation Training and practical courses in which the digital speed display supports participants' understanding of the process Workstations with several users where a traceable speed setting is more important than estimating from a scale Technical details Pump type4-chamber diaphragm vacuum pump, dry Delivery rate max. (50/60 Hz)1.32 m³/h (22 l/min) Ultimate pressure without gas ballast2 mbar Suction stages / cylinders4 / 4 Connection diameter suction/pressure side8 mm Inlet pressure2 to 1030 mbar ControlTwo-point control, analogue speed-vacuum control, setting via turn-and-push knob Speed range285 to 1200 rpm DisplayLED Sound pressure level at min. pressure54 dB(A) Wetted materialAl2O3, PTFE, FFPM, PPS, NBR Housing materialCoated die-cast aluminium / thermoplastic Dimensions (W x H x D)150 x 375 x 370 mm Weight11.5 kg Permissible ambient temperature5 to 40 °C Permissible relative humidity80 % (up to 31 °C), decreasing linearly to max. 50 % (at 40 °C) Protection class according to DIN EN 60529IP 20 InterfacesRS232, USB Voltage / frequency100 to 240 V, 50/60 Hz Device power consumption130 W (standby 3 W) Scope of delivery 1 x IKA VACSTAR digital Vacuum Pump 1 x vacuum hose (1 m) 1 x silencer 1 x USB cable (USB-A to USB-B) 1 x analogue cable for connecting an external vacuum controller (e.g. VC 10) Individual requirements & procurement service The VC 10 vacuum controller is available as an extension for fully automatic distillations, and for the protection of laboratory air and the environment we also recommend the VSE 1 emission condenser. Further accessories and spare parts are available on request through our procurement service.
KNF LABOPORT vacuum pump system ® SR 820 G, 325236/313452
Chemical-resistant vacuum pump system comprising a chemical-resistant diaphragm vacuum pump, a base plate and two separators on the inlet and outlet sides. Thanks to its high vapour and condensate resistance, it is ideally suited for aggressive/corrosive gases and vapours. Advantages: Flow rate (max.): 20 l/min Ultimate vacuum (max.): 6 mbar (abs.) Ideal for highly aggressive/corrosive gases and vapours High vapour and condensate resistance Integrated gas ballast valve Integrated speed control Technical specifications: Flow rate (max.): 20 l/min Ultimate vacuum (max.): 6 mbar (abs.) Operating pressure (max.): 0.1 bar (rel.) Weight: 10.7 kg
IKA VACSTAR control Diaphragm Vacuum Pump with Integrated Controller, 22 l/min, 0020109375
The IKA VACSTAR control (MPN 0020109375) is a dry, oil-free 4-chamber diaphragm vacuum pump with a factory-integrated vacuum controller. Anyone who has so far operated a separate pump and an additional vacuum controller side by side saves bench space and wiring effort with this 1:1 concept: the control electronics are already in the pump housing, and it is operated via a detachable display that can also be read and operated directly at the fume hood. For recurring distillation routines, for example on a rotary evaporator in routine operation, the separate wiring and calibration of an external controller for each setup is no longer necessary, which makes it easier to switch between several workstations in the laboratory. Integrated controller instead of a separate vacuum regulator The pumping capacity of 22 l/min (1.32 m³/h) and an ultimate vacuum of 2 mbar reliably cover typical tasks such as rotary evaporators, drying ovens or vacuum filtrations. The speed range extends from 285 to 1200 revolutions per minute, regulated by a ceramic Al2O3 vacuum sensor. Unlike with a plain diaphragm pump, the question of which external controller is suitable no longer arises, because the pump and control unit are already matched to each other. WiCo remote control for operation under the fume hood The TFT display of the WiCo remote control can be detached from the pump and placed separately, for example directly at the fume hood window, while the pump itself stands underneath or beside it and therefore does not have to be operated constantly through the front window. Several operating modes can be selected via the menu: automatic operation with boiling point detection and a stored solvent library, manual operation at a fixed speed, and separate pump-down and cleaning functions. The automatic boiling point detection helps to avoid bumping and to protect samples from loss through pumping down too quickly, especially with low-boiling solvents. Chemically resistant and designed for continuous operation The PTFE diaphragms and chemically resistant materials in the media path make the VACSTAR control robust against aggressive solvent vapours. An integrated valve cleaning function removes solvent residues from the system and thereby extends the service life of the diaphragms, without the pump having to be dismantled for manual cleaning. For the protection of laboratory air and the environment, the VSE 1 emission condenser can be connected afterwards, so that solvent vapours do not enter the room air unfiltered. As the pump works as a dry-running pump, oil changes are also eliminated, and with them the risk of oil vapours coming into contact with the sample. Connection and format for fixed laboratory workstations With dimensions of 270 x 435 x 500 millimetres and a weight of 14 kilograms, the VACSTAR control is designed for a fixed place at the workstation, for example directly under the fume hood bench, rather than for frequent transport between workstations. Data connection is via USB and RS232, for example for process documentation with laboratory software. The housing is classified IP 20, the device power consumption is 140 watts in operation and 1.5 watts in standby, and the pump is connected to 100 to 240 volts at 50 or 60 hertz, which allows worldwide use without a separate voltage converter. Reproducible processes thanks to automatic boiling point detection The stored solvent library automatically recognises common solvents from their boiling behaviour and adjusts the vacuum accordingly, instead of the target speed having to be readjusted manually. This reduces the variation between individual distillations and makes it easier to hand a process over to changing laboratory staff, because the parameters can be documented and repeated on the device. In combination with the USB or RS232 connection to laboratory software, the complete course of the process can also be logged, which means a noticeable time saving compared with a manually kept process file, especially in quality-assured environments with batch documentation. Typical applications As a 1:1 vacuum solution with integrated controller, the VACSTAR control is particularly suitable for the following applications: Automated distillations on the rotary evaporator with boiling point detection, also with changing solvents Vacuum drying in drying ovens with reproducible, documented process parameters Vacuum filtration where documented, repeatable process control is also required Laboratory workstations with limited space where a separate vacuum controller does not fit Process documentation via USB or RS232 in quality-assured laboratory environments Fixed vacuum workstations where several users are to run the same process reproducibly Technical details Pump type4-chamber diaphragm vacuum pump, dry, with integrated controller Pumping speed max.22 l/min (1.32 m³/h) Ultimate pressure2 mbar Inlet pressure1 to 1030 mbar Speed range285 to 1200 rpm Number of cylinders4 Connection diameter suction/pressure side8 mm Vacuum sensorCeramic (Al2O3) Controller / operationIntegrated, detachable WiCo display with touch operation Operating modesAutomatic with boiling point detection, manual operation, pump-down and cleaning function InterfacesUSB, RS232 Protection class according to DIN EN 60529IP 20 Dimensions (W x H x D)270 x 435 x 500 mm Weight14 kg Voltage / frequency100 to 240 V, 50/60 Hz Device power consumption140 W (standby 1.5 W) Scope of delivery 1 x IKA VACSTAR control Vacuum Pump with Integrated Controller 1 x WiCo remote control WH11 (detachable control unit) 1 x power supply OS 1.0 for the WiCo remote control 1 x vacuum hose (1 m) 1 x USB cable (USB-A to Micro-B, 2 m) 1 x USB cable (USB-A to USB-B) 1 x screwdriver Individual requirements & procurement service For additional protection of laboratory air and the environment, the VSE 1 emission condenser can be retrofitted, as can a Woulff bottle to protect the pump from liquid surges or suitable connecting hoses for your rotary evaporator. For technical advice, please contact our procurement service.
IKA MVP 10 basic Vacuum Pump, Oil-Free Diaphragm Pump, IP 54, 0003980000
The IKA MVP 10 basic (MPN 0003980000) is a compact, oil-free diaphragm vacuum pump for straightforward laboratory use. Without a display, without digital interfaces and without a controller, the unit concentrates on pure function: reliably generating vacuum, robustly built and easy to maintain. This makes the MVP 10 basic a pragmatic choice for workstations where a simple vacuum source is needed without control software or a process log behind it, for example as a second or third pump for less critical secondary tasks alongside a precisely controlled main setup. Two-stage pump with solid delivery rate The two-stage, two-cylinder diaphragm pump reaches a maximum delivery rate of 1.7 cubic metres per hour (28.3 litres per minute). The ultimate pressure is 7 mbar without gas ballast and 15 mbar with the gas ballast valve activated. The gas ballast valve is particularly helpful when moist or solvent-containing vapours arise during pumping, as it prevents them from condensing in the pump and attacking the diaphragms in the long term. The permissible inlet pressure ranges from 7 to 1050 mbar, so the pump is suitable both for initial evacuation and for maintaining an existing vacuum. Chemical resistance through PTFE components throughout All parts in contact with gas are made of PTFE or PTFE compounds, which makes the MVP 10 basic particularly resistant to aggressive chemicals. Combined with the dry, oil-free design, oil changes and the disposal of waste oil are eliminated entirely, and at the same time the risk of sample contamination by oil vapours drops to zero. The flat, compact design and the construction built for durability ensure a high ease of servicing in everyday laboratory work, so that maintenance can generally be carried out quickly and without special tools. Protection class IP 54 for harsh operating conditions With protection class IP 54 according to DIN EN 60529, the MVP 10 basic is dust-proof and splash-proof and is therefore more robustly designed than many comparable laboratory vacuum pumps without this classification, for example the VACSTAR series with only IP 20. This also makes it interesting for locations where liquids are occasionally handled or the ambient air is not dust-free, for example in pilot plants or workshop laboratories. The permissible ambient temperature is between 10 and 40 degrees Celsius at a maximum permissible relative humidity of 80 percent, which also allows use in rooms that are less strictly air-conditioned. Compact format for fixed workstations With dimensions of 245 x 155 x 320 millimetres and a weight of 11.5 kilograms, the MVP 10 basic takes up little space and can also be moved between several workstations if required. The connection is made via 10 millimetre hose nozzles on the suction and pressure side, and the speed is constant at 1380 revolutions per minute in 50 hertz operation and 1680 revolutions per minute at 60 hertz, without any need for manual speed control. The pump is connected to 230 volts at 50 or 60 hertz with a device power consumption of 180 watts. Deliberate omission of display and interfaces Unlike the VACSTAR series, the MVP 10 basic deliberately dispenses with a display, digital interfaces and a vacuum controller. This reduces not only the purchase price but also the number of potential sources of error and wearing parts that would have to be replaced in the event of service. For applications that do not require finely regulated, documented process control but simply need a reliable vacuum, this is a deliberate and sensible compromise in favour of robustness, easy maintenance and a clearly calculable purchase. Typical applications As a robust, easy-to-operate entry-level pump without additional electronics, the MVP 10 basic is particularly suitable for the following applications: Simple vacuum filtrations in the routine laboratory where a finely regulated, digitally traceable ultimate vacuum depth is not required Suction and evacuation in pilot plants or workshop laboratories with a rougher, less air-conditioned ambient climate Support of desiccators and simple drying setups in routine operation Fixed workstations with several users where a reliable, robust vacuum source without its own user interface is sufficient Teaching laboratories where a robust, easy-to-explain pump with no significant operating effort is required Technical details Pump type2-cylinder diaphragm vacuum pump, dry, two-stage Delivery rate max. (50/60 Hz)1.7 m³/h (28.3 l/min) Ultimate pressure without gas ballast7 mbar Ultimate pressure with gas ballast15 mbar Suction stages / cylinders2 / 2 Gas ballast valveYes Connection diameter suction/pressure side10 mm Inlet pressure7 to 1050 mbar Speed (50 Hz / 60 Hz)1380 rpm / 1680 rpm Sound pressure level at min. pressure65 dB(A) Wetted materialPTFE or PTFE compounds (all parts in contact with gas) Dimensions (W x H x D)245 x 155 x 320 mm Weight11.5 kg Permissible ambient temperature10 to 40 °C Permissible relative humiditymax. 80 % Protection class according to DIN EN 60529IP 54 Voltage / frequency230 V, 50/60 Hz Device power consumption180 W Scope of delivery 1 x IKA MVP 10 basic Vacuum Pump 1 x vacuum hose 1 x silencer 1 x Y hose connector, 8 mm Individual requirements & procurement service Accessories and spare parts for the MVP 10 basic, such as additional hose connectors or replacement diaphragms, are available on request through our procurement service.