Thursday, January 31, 2019

VSI Controls GLS Globe Control Valves

GLS SeriesThe VSI Controls GLS Series is recognized as a high-performance control valve in the oil, gas, power, and process industries, the while boasting easy, quick, and economical maintenance. In contrast from other control valves operated by spring-diaphragm actuators, the GLS Series is operated by double acting spring-cylinder actuator that takes advantage of its high pneumatic stiffness, which in turn ensures an excellent and accurate positioning in throttling as well as fast and reliable response to changes in the control signal.

Get more information about the VSI Controls GLS Control Valve Here

Tuesday, January 22, 2019

CCS DualSnap Pressure and Temperature Controls


CCS manufactures pressure and temperatures switches used in many industrial and aerospace applications. CCS’ designs utilize proven, rugged “Dual-Snap®” disc spring and advanced sensing technologies to provide customers superior solutions for pressure and temperature applications.

Contact Mountain States Engineering & Controls for more information.
303-232-4100

Wednesday, December 12, 2018

Happy Holidays from Mountain States Engineering and Controls

From all of us at Mountain States Engineering and Controls, we wish our customers, partners and vendors a safe and happy holiday season and a wonderful 2019!


Friday, December 7, 2018

Mitigating Legionnaires Risk with Anti-Microbial Cooling Towers

Anti-Microbial Cooling Towers
Anti-Microbial Cooling Tower
(Delta Cooling Towers, Inc.)
We've all read about deadly outbreaks of Legionnaires Disease cropping up in cities across the United States. Hundreds of people have been severely sickened and dozens killed by deadly bacteria that proliferates in water systems like the cooling towers used in conjunction with large HVAC systems.

Causes:
  • Poor water flow and areas where water is stagnant, common to cooling tower designs with a large flat bottom basin, which will have stagnant water in the corners.
  • pH between 5.0 and 8.5, water temperatures between 68°F and 122°
  • Sediment that promote growth of commensal microflora
  • Microorganisms including algae, flavobacteria, and Pseudomonas, which supply essential nutrients for Legionella growth or harbor the organism
Prevention:
  • Chemical Water Treatment: Oxidizing Biocides are recommended as the best mode of control. Warning: this type of biocide can be aggressive towards metal surfaces; specifically metal cooling towers.
  • System Design & Engineering: No stagnant water, sloped basin, and/or basin sweeper system.
  • Maintenance – Competent consistent water treatment and monitoring most important.
  • According to the Center for Disease Control and Prevention, about 5,000 cases of Legionnaire’s disease are now reported each year in the United States.
Cooling towers have a long history of effectively expelling heat from the water used in many commercial and industrial applications. However, a recent study from the Center for Disease Control and Prevention (CDC) found that an overwhelming majority of the cooling towers they tested contained Legionella DNA. Legionella bacteria can flourish in cooling towers and spread to humans when expelled water vapor or mist containing the bacteria is inhaled.

Research in Legionella prevention led to conclusions that cooling towers with rounded basins and compounded with an antimicrobial resin significantly mitigated risk of harmful bacteria.  Rounded towers improve circulation which inhibits growth, and the anti-microbial chemicals embedded into the tower’s HDPE material also helps to prevent the growth.

Resulting from the research, the Anti-Microbial Cooling Tower, was developed by Delta Cooling Towers, Inc. and is now available to greatly reduce the growth of Legionnaires bacteria,  By incorporating an anti-microbial HDPE resin in the cooling tower shell, tower fill and drift eliminator, tests have confirmed efficacy against the growth and spread of Legionella.

For more information on Anti-Microbial Cooling Towers, visit this link.

To learn more about Anti-Microbial Cooling Towers right now, call Mountain States Engineering and Controls at 303-232-4100.


Friday, November 30, 2018

LevelWAV Radar Level Transmitter

LevelWAV microwave level transmitterKING-GAGE LevelWAV microwave level transmitter provides continuous measurement of liquids in storage or processing vessels. Measurement is independent of dielectric constant, temperature, pressure and density variations. It is suitable to a broad range of level measurement and control applications including process conditions exhibiting visible vapors, foam, high temperature and/ or pressure. Level measurement is possible for highly corrosive materials (caustics, acids, solvents) and slurries.

For more information, contact Mountain States Engineering and Controls by calling 303-232-4100 or visit their web site at https://mnteng.com.

Download the LevelWAV brochure here.


Friday, November 16, 2018

What is a Triple Offset Valve (TOV)?

Triple Offset Valve
Click for larger view.
As the name implies, there are three separate offsets designed into the triple offset valve. Two of the offsets apply to the location of the shaft with respect to the center line of the bore and the center line of the disc/seat sealing surfaces.

The third offset in the design is the axis of the seat cone angle that is inclined from the center line of the valve bore. This eliminates rubbing of the seat/seal contact surfaces during operation and preserves sealing integrity over the cycle life of the valve.

The contact is made in only the final point of closure, acting as a mechanical travel stop which prohibits over-travel of the disc.

Applications and Method of Control

A triple eccentric or triple offset butterfly valve should be used when the application requires bubble tight shut-off, but does not allow the use of a rubber-lined butterfly valve due to low/high temperatures and high pressure. The triple offset design can be used for on/off services, throttling services and modulating services.

On/Off Service
Like the name suggests, on/off valves are designed to shutoff and to open fully but lack the ability to to regulate effectively through the range of travel.

Throttling Service
Throttling service (sometimes referred to as inching) is in general flow control through the system where the valve is set and held in an intermediate position.

Modulating Service
Modulating service (known also as regulating service) is used to drive the valve frequently to any position between fully open and fully closed to control the flow. It uses feedback from the field, and valve disc position is adjusted almost continuously.

Quarter turn valves are usually limited to a throttling range of ~25° to ~75° open (25% to 85%). In case of throttling the manufacturer should be consulted in order to predict whether the control valve was installed accurately.

For more information, contact Mountain States Engineering and Controls. Visit their web site at https://mnteng.com or call 303-232-4100