Category Archives: Full port valves

Keeping your valves in check

Purchasing valves can be a major headache for some. For starters, one must know what kind of valve they are in need of and whether or not it fits their application. The following questions should be asked in order to find the proper valve;

–          What is the media?

–          What is the temperature?

–          What is the pressure?

–          Is it an open or closed position?

From there, the manufacturer will have a better idea of what the end user is really looking for. Many times, the manufacturer will find an error and will need more information to provide the best valve.

Once the valve is picked up and has landed in the end users hands, maintaining the valve is the next step. Many people think that once a valve has arrived it is placed in line right away, but this is not the case. Many steps are taken to insure the end user has received the order as they will have many shipments in one day. Step such as;

–          Ensure the valve, actuation and valve control accessories bill of materials matches the end user’s specification sheet.

–          The exterior of the valve and components checked to make sure it was not damaged in transportation

–          Ensure the valve process connections are covered (See article for more details)

Once the valve is “in line”, “stroking the valves and applying general-purpose lubrication at least once a month provides longer-term benefits in the functioning of in line valves”.

The incidence of leaking valves immediately following installation occurs too often, with the blame placed on the valve and its manufacture instead of the end user’s misapplication.” Making sure to follow policy and procedure and taking preventative steps will help get the right valve for the right job without any problems.

Read more at: http://www.pumpsandsystems.com/valves/july-2016-follow-these-tips-extend-life-your-valves

 

trunnion-ball-valves

24: ANSI 150 Trunnion Ball Valves (GVC)

API 6D Valves in line (GVC)

API 6D Valves in line (GVC)

 

Lubricants for Your Valves’ Gearbox

Theory: Cold weather dictates a different type of lubricant to avoid seizure and promote proper function inside the gear housing.

Global Valve and Controls states, “in order to have a proper functioning valve it is necessary to use the correct grease inside the gear housing.”

In a case study where non-cold rated grease is applied to a valve that is heading to Wyoming, where the weather can be frigid seven months out of the year; the likelihood of the valve seizing becomes increased and the average lifespan potential will decrease.

Aftermath: It is a wise decision to consider the environment that your purchased valve will be applied to. With Global Valve and Controls, these are questions we ask our customers to protect their investment in order to increase the longevity of their valve; like a vehicle, it is important to use the recommended lubrications and oils to ensure proper performance. Valves are the same way. Moving parts need the correct lubrication to operate proficiently.

Fact: Materials such as grease or oil, are affected greatly by weather, hot and cold. However, lubricants can be engineered to withstand various environments by being structured to hold their viscosity.

Global Valve and Controls Series CFS

Let’s take a look at the  CFS valves. What are they? What are they used for? What sizes are available, materials, I promise all your questions will be answered right here, and if they are not, well now you know who to contact.

The CFS is one of our widely used ball valves; it is used in a wide variety of industries such as oil/gas, petrochemical , pulp and paper , skid package equipment. If you are wondering what is so special about this particular valve. I would say it is considered a high quality, low maintenance ball valve and the price is very competitive compared to other brands. Take a look at some quick facts:

  • Sizes 2″ – 12″ ANSI Class 150-300
  • 2-Piece Body Floating Flanged Design, Full, or Reduced Port
  • Raised Face and Ring Type Joint Ends (RTJ)
  • Self-cleaning, Leak Tight Slotted Seat Design
  • NACE MR0175 Approved
  • Design and Tested to API 6D
  • Fire Tested according to API 607 Standards
  • Floating Ball Design prevents Cavity Pressure Build-up while the Valve is open
  • Wide Variety of Exotic Alloys for Body and Trim
  • Wide Choice of Seat Material (TFM Standard)

Flanged Ball Valves

 

What are Actuators?

What are actuators?

What are actuators and how do they work? There are four types of actuators that are used today.  The most commonly used in this industry are the Pneumatic and Hydraulic actuator.

hydraulic actuator consist of a cylinder or fluid motor that uses hydraulic power to facilitate mechanical operation. The mechanical motion gives an output in terms of linear, rotary or oscillatory motion. Because liquid cannot be compressed, a hydraulic actuator can exert considerable force, but is limited in acceleration and speed.

pneumatic actuator converts energy formed by compressed air at high pressure into either linear or rotary motion. Pneumatic energy is desirable for main engine controls because it can quickly respond in starting and stopping as the power source does not need to be stored in reserve for operation.

You may wonder what this means in English? Well, in simpler terms; the main difference between the two is that pneumatic actuators use air to transmit force while a hydraulic actuator will use liquid to transmit force. Depending on the media of your project will depend on what kind of actuator you will need.

This picture shows an example of what a pneumatic actuator might look like with a ball valve. A Pneumatic scotch yoke Automation package along with our ANSI 1500 Trunnion Ball Valve going for Natural gas service.

Trunnion Ball Valves

Global Valve and Controls has become one of the newest organizational members of ASTM

ASTM International logo

Image via Wikipedia

Created in 1898, ASTM International has become one of the largest voluntary standards developing, not-for-profit organizations in the world. ASTM provides a forum for the development and publication of voluntary consensus standards for materials, products, systems, and services from its members. The members of ASTM represent producers, users, consumers, government, and academia from over 100 countries and are responsible for the development of technical documents that are the basis for manufacturing, management, procurement, codes, and regulations.

What is a standard?

As used in ASTM, a standard is a document that has been developed and established within the consensus principles of the organization and which meets the requirements of ASTM procedures and regulations. Full consensus standards are developed with the participation of all parties who have a stake in the standards’ development and/or use.

How and where are ASTM standards used?

ASTM standards are used by individuals, companies, and agencies around the world. Purchasers and sellers incorporate standards into contracts; scientists and engineers use them in their laboratories and offices; architects and designers use them in their plans; government agencies around the world reference them in codes, regulations, and laws; and many others refer to them for guidance.

For more information on ASTM, go to www.gvcintl.com and click on the ASTM hyperlink.

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