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Items starting with M

Mag Drive

Mag Drive Centrifugal Pumps. These centrifugal pumps are designed for use with corrosive, toxic, noxious, radio-active, and carcinogenic liquids. The pump fluid chamber is isolated from the separate external motor which drives the pump. Magnetic drives act as a link between the shaft and impeller.

  • SPEC #: 18132
  • Code: 18-03-02

Magmeter Flow Transmitter

Magmeter Flow Transmitter. A device with no moving parts that measures the volumetric flow a fluid, and converts that measurement to an electrical signal that can be used to operate an integrated digital or analog readout, or to control another device. Because the measurement is based upon Faraday’s Law, which involves ratio between the velocity of a conductor through a magnetic field and the voltage generated, the fluid being measured must be electrically conductive. There are two common types of magmeter transmitters: insertion and in-line.

  • SPEC #: 17420
  • Code: 17-04-02

Magnetorestrictive Transmitter

Magnetorestrictive Level Transmitter. These transmitters operate using magnetorestrictive sensing material, usually in the form of a coiled wire. The sensing wire is pulsed with a current at fixed intervals to create a magnetic field which then interacts with the float's magnetic field, which is in direct relation to the liquid level. This creates a stress in the sensing wire. This stress wave propagates along the sensing wire at sonic speed until the pulse is detected at the transmitter. The measured lapse time is then converted into an analog output proportional to level. These devices have high sensitivity and dynamic range, no measurable mechanical hysteresis, a linear response, and physical robustness. They are ideal for continuous level monitoring of storage and shipment containers for oil, beer and other beverages, pharmaceuticals, flammable fluids, solvents, and hydrocarbons.

  • SPEC #: 17570
  • Code: 17-05-07


Mechanical Filters. These devices filter liquids by introducing a porous mechanical barrier into the flow. The barrier permits passage of the processed fluid, while resisting the passage of specific contaminants. Common types are sieve filters, media filters, screen filters, disk filters, and cloth filters

  • SPEC #: 18113
  • Code: 18-10-03


Mechanical Vessels: Expansion Tanks & Air Receivers. An expansion tank is a small tank used in closed water heating systems and domestic hot water systems to absorb excess water pressure caused by thermal expansion or water hammer. An air receiver delivers or stores short-term demand that either exceeds or is less than an air-compressor’s capacity.

  • SPEC #: 18109
  • Code: 18-01-10

Mechanical Conveying

Mechanical Conveying Systems: The are several types of mechanical conveying systems. Belt Conveyors, consisting of two or more pulleys with a continuous belt that rotates about them, are used for general material handling such as moving boxes or transporting bulk materials. Elevator belts, having regularly spaced partitions, are used for transporting loose materials up steep inclines. Snake Sandwich Belt Conveyors use two face-to-face belts to gently but firmly contain the product being transported. Vibrating Conveyors, with trough shaped solid conveying surfaces, move product by vibration and slope. Roller Conveyors move product along a bed of small wheels that are either motor or gravity driven.

  • SPEC #: 18253
  • Code: 18-15-04

Mechanical Seals

Centrifugal Pump Mechanical Seals. Mechanical seals consist of two basic parts, a rotating element attached to the pump shaft, and a stationary element attached to the pump casing. Each element has a highly polished sealing surface. The polished faces of the rotating and stationary elements come into contact with each other to form a seal that prevents leakage along the shaft. They are used in applications where packing material is not adequate for sealing a centrifugal pump’s shaft.

  • SPEC #: 18139
  • Code: 18-03-09


Membrane Filters. These filters are constructed in very thin layers from polymers and other advanced synthetic materials. Thicknesses range from 100 to 200 micro-meters. Most are manufactured with approximately 70 to 90% porosity. They are used in industry, science, and research for a variety of applications, such as: water recovery and recycling, fluid and water purification, water desalination, and capture and recovery of fluid-suspended products. They are available in standard and custom configurations.

  • SPEC #: 18119
  • Code: 18-10-10


Metering Positive Displacement Pumps. These positive displacement pumps move liquids at adjustable flow rates which are precise when averaged over time. Metering refers to this process, and refers to the pump’s application, rather than the kind of pump used. Positive displacement pumps are often used as metering pumps to pump chemicals, solutions, or other liquids, and are able to pump into a high discharge pressure. These pumps are commonly driven by an electric motor.

  • SPEC #: 18141
  • Code: 18-04-01


Microprocessor Control Systems. Built around an integrated computer circuit that performs all the functions of a central processing unit, these systems are used increasingly to handle control functions previously carried out by a dedicated analogue control circuit. These control systems are programmable, so that modifications or application requirements may easily be applied without redesign. They can be programmed to make detailed calculations and statistical analyses. Data logging can be done easily, so that operation is automatic, and instrument calibration is simple.

  • SPEC #: 17652
  • Code: 17-50-02


MMI & OIT Control Systems. Man Machine Interface (MMI) and Operator Interface Terminals (OIT) are operator interfaces with which users interact in order to control other devices. Some include knobs, levers, and controls. Others provide programmable function keys or a full key pad. Devices that include a processor or interface to personal computers are also available. Many include alphanumeric or graphic displays. Some are web-enabled. Others include software drivers, a stylus, and support for a keyboard, mouse, and printer. Devices that are designed for harsh environments include enclosures that meet standards from the National Electronics Manufacturers’ Association (NEMA).

  • SPEC #: 17655
  • Code: 17-50-05

Modular Pneumatic Tubing

Modular Pneumatic Tubing. Modular tubing offers quick mechanical assembly of tubing systems using a complete assortment of tubing segments, fittings, valves, gauges, and ports that are designed to assemble quickly and easily with simple hand tools. Each modular component has a flanged end and includes necessary gasketing and associated clamps to ensure an accurate seal. Most modular systems, available in various materials, provide adapters enabling you to join modular systems to existing system for repairs or quick additions.

  • SPEC #: 18410
  • Code: 18-40-10

Multieffect Evaporators

Multi-Effect Evaporators. Evaporation thermally removes a liquid from a solution, suspension, or emulsion. In evaporator technology, each evaporator is referred to as an effect. When several connected evaporators or “effects” are use in one system, it is called a multi-effect evaporator. In these systems, the product output from one effect is the feed for the next effect. The high temperature vapor that is removed from one effect is used to heat the lower temperature product in the next effect, with considerable efficiency gains. There are two feed operations: backward and forward. In backward feeds, the raw feed enters the last (coldest) effect, and the discharge from this effect becomes a feed for the next to last effect. This feed is used when the feed is cold, as much less liquid must be heated to the higher temperature of the early effects. In backward feeds, the raw feed is introduced in the first effect, and passed from effect to effect parallel to steam flow. The product is withdrawn from the last effect. This feed is used when the feed is hot.

  • SPEC #: 18273
  • Code: 18-07-12