Showing posts with label video demonstration. Show all posts
Showing posts with label video demonstration. Show all posts

Tuesday, November 8, 2016

Spiral-Trol Valve Disassembly Video

globe valves control valves pneumatic actuator
Globe control valves with pneumatic actuators
Spirax-Sarco is a globally recognized manufacturer of valves, traps, and a host of other steam system specialties. Their Spira-Trol line of globe valves can be employed throughout a steam of other process fluid system to provide accurate flow regulation. The valves are available with several options of electric or pneumatic actuators, as well as positioning controllers.

The video included below provides a demonstration of the simplicity involved in disassembling the valve in-line for regular maintenance or inspection. The video is short, as is the length of time needed to access the valve internals. These valves are designed for easy maintenance.

Share your fluid process and steam control challenges with application experts. The combination of your process knowledge and their product application expertise will deliver effective solutions.

Friday, April 1, 2016

Video Demonstration of Weir Diaphragm Valve Operation

industrial diaphragm valve sectional view for process control
GEMU 620 Industrial Diaphragm Valve
Diaphragm valves comprise one of many different process control valve designs, each with specific attributes making them better suited for certain applications. Selecting the right valve type for an application is a critical early step toward successful control implementation.

Familiarity and understanding of how a particular valve type functions is necessary when equipping a fluid control system. Here are some considerations for valve operation that come into play.

  • Media Compatibility:
    Industrial process control applications cover an immense range of viscosity, velocity, solids content, and other physical media characteristics that may, or may not, be acceptably addressed by some valve types.
  • Cycle Frequency:
    Some valve types are more suitable for a high frequency of on/off cycles, others are better suited to slower rates.
  • Compatibility With Sanitary or Similar Operations:
    Some industries have requirements for special cleaning, sanitizing, or sterilizing of the process flow path. A valve design that does not trap the media within the valve body and allows for full exposure of the fluid path to whatever cleaning agent is applied has certain advantages for these applications. Some cleaning operations also require a full bore or straight through flow path to allow for proper cleaning.
  • Operating Speed:
    Different valve types may have varying capabilities to provide rapid change of valve position. Valve operating speed must be compatible with process requirements that may call for either rapid or slow opening or closing.
  • Throttling Ability:
    Each valve type, through the characteristics of its closure mechanism, offers comparatively different capacity for regulate fluid flow across an extended range between completely closed and fully open.
  • Space Requirements:
    Different valve trim arrangements can predicate how much installation space a valve may require for proper operation and maintenance. For example, a valve with a rising stem will generally require more clearance than a similar capacity valve with a rotating stem.
Industrial process control diaphragm valve Gemu
GEMU Model 620 Industrial Diaphragm Valve
Certainly, there are more aspects of valve operation that will be taken into account in the selection process. 

Diaphragm valves defend their niche of applications with their ability to:
  • Provide on/off or throttling service
  • Eliminate stem leakage
  • Provide bubble tight service
  • Eliminate pockets that may trap media
  • Isolate valve mechanism from media
  • Prevent contamination of media by valve parts or operation
Below is a short video that provides an animated look inside a weir diaphragm valve. The video provides a clear illustration of how the fluid flows through the valve and how the valve controls flow. There are variants of the diaphragm valve that do not use a weir, providing a straight through or full bore flow path. Their operation is similar.
Watch the video. It's short and to the point. Get the help you need solving your process control valve challenges from the seasoned experts at Mountain States Engineering.