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Dekker Knowledge – Vacuum Pumps and Systems :: Glossary
Dekker Knowledge – Vacuum Pumps and Systems

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Word Description
ACFM Actual Cubic Feet Per Minute
AquaSeal DEKKER AquaSeal water-sealed liquid ring vacuum pump systems are designed to customer requirements for each application as full seal-liquid (in this case water) recovery systems or as partial or no seal-liquid recovery systems.
AquaSeal-POWERGEN AquaSeal-POWERGEN condenser-exhauster systems designed by DEKKER Vacuum Technologies, Inc. are full-recovery two-stage liquid ring vacuum pump packages, using water as the seal-liquid. The systems are particularly well-suited by taking advantage of the high condensing effect, which drastically reduces the water vapor content resulting in a lower inlet volume to the pump.
Area Classification Classification of hazardous areas
BTU British Thermal Unit is defined as the amount of heat required to raise the temperature of one pound of liquid water by one degree Fahrenheit.
ChemSeal DEKKER ChemSeal solvent-sealed liquid ring vacuum pump systems are designed to customer requirements for each application, as full seal-liquid recovery systems for recovery of a variety of solvents.
CIP Clean In Place. A technique where a heat exchanger is cleaned on site instead of removing the heat exchanger to be cleaned or maintained off site.
CSA Canadian Standards Association
Custom Engineered Systems DEKKER Custom-engineered systems are special packages designed to address any specific process conditions or problems a customer might have. The systems are designed, engineered and manufactured with performance in mind, as well as low power consumption, space, noise and other customer requirements.
Duratex Duratex is a custom formulated lubricant specifically designed for long life under the severe, demanding conditions usually encountered in recirculating systems such as rotary vane vacuum pumps and systems. They have a very low vapor pressure making it an excellent lubricant for vacuum applications. Duratex lubricant is available in Standard and Synthetic in 32, 68, and 100 CS viscosities.
DuraVane DEKKER offers a comprehensive range of rotary vane vacuum pumps: lubricated pumps, lubricated pumps for saturated air (wet) service and oil-free (dry) rotary vane vacuum pumps. All pumps are of heavy-duty construction, compact design and easy to install and low in maintenance. Pumps are direct driven, air-cooled and have a low noise level and long vane life.

The DuraVane rotary vane vacuum pump systems designed by DEKKER Vacuum Technologies, Inc., are available in simplex and multiplex configurations, as stack-mounted, base-mounted or tank-mounted units. Systems can utilize lubricated or dry (oil-free) rotary vane vacuum pumps, are used in standard industrial applications and can be built to NFPA99 specifications for hospitals and laboratories.

DX-5 The DEKKER patented DX-5 and DX7 air/oil separator design features five stages of separation resulting in the best air/oil separation in the industry. Another advantage of the DX-5 and DX-7 separators is the structural design. The tank is cylindrical, resulting in superior strength which is very important on units operating with back pressure. This design also eliminates possible leaks associated with square tank designs.
DX-7 The DEKKER patented DX-5 and DX7 air/oil separator design features five stages of separation resulting in the best air/oil separation in the industry. Another advantage of the DX-5 and DX-7 separators is the structural design. The tank is cylindrical, resulting in superior strength which is very important on units operating with back pressure. This design also eliminates possible leaks associated with square tank designs.
EEPROM An EEPROM (Electrically Erasable Programmable Read Only Memory) is a type of computer memory chip that retains its data when its power supply is switched off.
FLA Full Load Amps - Also known as "nameplate amps," it's the current you can expect under full load (torque).
H-I-M Human Interface Module. Keypad used on Variable Frequency Drives.
HP Horsepower
Ideal Gas Laws The Ideal Gas Laws are used to convert between different pressures and temperatures and to convert mass flows to volume flows. The Ideal Gas Laws include Boyle's Law, Charles' Law, Avogadro's Law, and the General Gas Law.
IEC International Electrotechnical Commission
Liquid Ring Compressor DEKKER Vacuum Technologies, Inc. offers TiTAN series high-efficiency single-stage liquid ring compressors as monoblock and bareshaft/pedestal models, covering a capacity range from 15 – 1100 CFM (3–150 HP) with maximum pressure capabilities up to 29 psig Stainless steel impellers are standard in compressors up to 20 HP. All models are designed for heavy-duty applications, are manufactured to ISO 9001 standards and feature mechanical shaft seals as standard. All compressors have only one moving part, low operating noise levels (68 – 80 dBA) and low maintenance. The biggest advantage of liquid ring compressors is that they can handle saturated gas mixtures and small amounts of liquid without damaging the internal parts of the compressor. All models are available in a variety of materials.
Maxima-K DEKKER Vacuum Technologies, Inc. offers large capacity Maxima-K series single-stage liquid ring vacuum pumps in capacities ranging from 1550 – 18000 CFM (60 – 850 HP) with vacuum capabilities up to 29”. The advantage of the liquid ring design is the ability to handle large amounts of condensibles. The condensing effect increases the actual pump capacity dramatically when handling saturated gas mixtures.

The Maxima-K design utilizes flat port plates mounted on each side of the impeller, which has proven to be a superior design as opposed to conical design liquid ring pumps, where tapered cones are situated inside the impeller to act as distributors. The clearances between cones and impeller are very critical for maximum performance, but the surfaces are very susceptible to wear. In case of a bearing failure the conical design pump is subject to serious and costly damage to internal parts, which is not the case with the flat port plate design Maxima-K pumps.

MSDS Material Safety Data Sheet
multi-plex A series of vacuum systems that are controlled by a common set of controls.
Multi-stage Systems DEKKER Vacuum Technologies, Inc. multi-stage vacuum pump systems are available in a capacity range from 50 – 10,000 CFM. DEKKER has the ability to design and manufacture a wide range of multi-stage systems using one or more mechanical vacuum boosters backed by other vacuum pumps. Each system is specifically designed to meet customer’s requirements for capacity, final pressure and materials of construction. DEKKER engineers have extensive experience in the sizing of these types of systems.

DEKKER multi-stage vacuum pump systems provide an almost unlimited ability to handle the most difficult applications because of the wide variety of vacuum pump combinations possible. These systems are used in different industries, including chemical, pharmaceutical, sterilization and vacuum-packing of food products. Multi-stage systems are designed, engineered and manufactured with performance in mind, as well as low power consumption, space, noise and other customer specific requirements.

NEMA National Electrical Manufacturers Association
PLC Programmable Logic Controller. A device that was invented to replace the necessary sequential relay circuits for machine control. The PLC works by looking at its inputs and depending upon their state, turning on/off its outputs.
Proclean Proclean is DEKKER Vacuum's devarnishing compound. Proclean 39V is used for devarnishing oil sealed systems. Proclean 68D is used for devarnishing rotary vane vacuum pumps.
Rotary Vane Compressors DEKKER Vacuum Technologies, Inc. offers DuraVane oil-free rotary vane compressors, covering a capacity range from 2 – 95 CFM (0.2–10 HP) with maximum pressure capabilities up to 15 psig. The units are heavy-duty construction, with a small footprint and easy to install. All units are efficiently cooled by a powerful built-in centrifugal fan. The units feature fewer vanes than other oil-free rotary vane compressors and are constructed of a high-tech, self-lubricating composite vane material, resulting in longer vane life and less vane replacement.
RTD Resistance Temperature Detectors
Scale-eX Scale-eX is DEKKER Vacuum's descaling compound for water sealed liquid ring pumps and systems.
SCFM Standard Cubic Feet Per Minute

SCFM is measured at standard conditions (68 degrees F at 29.92"Hg)

SF Service Factor - a measure of capacity at which a motor can operate without overload or damage.
Sheave A wheel or roller with a groove along its edge for holding a belt, rope, or cable. One or more sheaves make up a pulley. The words sheave and pulley are often used interchangeably.
TEFC Totally Enclosed Fan Cooled
Titan DEKKER Vacuum Technologies, Inc. offers TiTAN series single-stage liquid ring vacuum pumps as motor-mounted, monoblock and bareshaft/pedestal models, covering a capacity range from 1.5 – 1200 CFM. Stainless steel impellers are standard in pumps up to 20 HP. All models are designed for heavy-duty applications, are manufactured to ISO 9001 standards and feature mechanical shaft seals as standard. All pumps have only one moving part, low operating noise levels (68 – 80 dBA) and low maintenance. The biggest advantage of liquid ring vacuum pumps is that they can handle saturated gas mixtures and small amounts of liquid without damaging the internal parts of the pump. All models are available in a variety of materials.

Titan Series two-stage liquid ring vacuum pumps are available covering a capacity range from 15 - 2,000 CFM. All models are designed for heavy-duty applications, are manufactured to ISO 9001 standards and feature mechanical shaft seals as standard. Special designs with double mechanical seals are available on request. All pumps have only one moving part, low operating noise levels (66– 85 dBA) and low maintenance. The biggest advantage of liquid ring vacuum pumps is that they can handle saturated gas mixtures and small amounts of liquid without damaging the internal parts of the pump. All models are available in a variety of materials.

torr A unit of measure to describe vacuum level. One torr is equivalent to 1mm of mercury or 1/760th of 1 atmosphere or (760 - ("HgV x 25.4)) Named after Evangalista Torricelli, the Italian physicist and mathematician that is credited with the development of the mercury barometer, 760 millimeters of mercury came to be regarded as the “standard” atmospheric pressure.
USDA United States Department of Agriculture
VFD Variable Frequency Drive. May also be referred to as Adjustable Speed Drive (ASD), Variable Speed Drive (VSD), Micro-drive, AC Drive, Inverter Drive, or Inverter
Vmax Dekker Vacuum Technologies, Inc. Vmax oil-sealed liquid-ring vacuum pump systems are available in a capacity range from 50 – 5,000 CFM and utilize DEKKER's patented high-efficiency DX-5 or DX-7 separator design, eliminating oil carry-over concerns.
VmaxLT A compact oil sealed vacuum system that incorporates Dekker Vacuum Technologies' patented DX-5 separator. It is economically priced to compete with rotary vane vacuum pumps for standard industrial applications where space is at a premium and reliability is crucial.
VmaxMTH The Vmax-MTH oil-sealed vacuum pump/compressor systems for coal-bed methane gas recovery designed by DEKKER Vacuum Technologies, Inc., are air-cooled (no cooling-water required) and are particularly suitable to operate as a vacuum compressor that will not overheat. Maximum differential pressure capability is 18 - 30 psi depending on system model.
Vmaxol Vmaxol is DEKKER's specially formulated low vapor pressure sealing fluid. By using Vmaxol sealing fluid in the Vmax liquid ring vacuum systems, the systems can operate for 10,000 hours or more without an oil change while preventing corrosion and scale build-up. This results in maximum savings in overall operating and maintenance costs. Vmaxol is available in Standard, Food Grade Synthetic, and Styrene.
VmaxVFD Vmax-VFD systems designed by DEKKER Vacuum Technologies, Inc. are liquid ring vacuum pump systems using oil as the seal-liquid. The systems operate with a Variable Frequency Drive which reduces the speed of the vacuum pump when demand for vacuum decreases, resulting in substantial savings.