Tag Archives: Reduced Port Ball Valves

Double Block and Bleed Valves

The Double Block and Bleed is a special feature that you can find among our Trunnion Ball Valves and Expanding Gate Valves. The idea of having DBB was first created by engineers. According our our ValveMD, “The DBB feature of the valve or valves is the ability to segregate two pressure sources and to bleed/vent pressure in the void between the two sealing elements (blocks). The bleed may be in the pipework/pipeline when two valves are used, or in the valve body between the two seats when the valve has the Double Block and Bleed (DBB) feature.”

You may find Double Block and Bleed valves in many types of industries, including; Gas and Liquid pipelines, Production, Processing Oil and Gas, and more. This feature ensures zero leakage which is why they are popular in pipelines. 

Do not be confused with Double Isolation Bleed which according to API means, “API 6D defines a Double Isolation & Bleed Valve (DIB) as a “single valve with two seating surfaces, each of which, in the closed position, provides a seal against pressure from a single source, with a means of venting/bleeding the cavity between the seating surfaces. The note adds that this feature can be provided in one or in both directions.”

For any questions regarding our Double Block and Bleed Valves, be sure to reach out to one of team members. 

Double Block and Bleed

3″ ANSI 900 API 6D Trunnion Ball Valves, F316 Stainless Steel for CO2 Applications

1, 2 or 3 piece Flanged Ball Valves

Flanged Ball Valves

In the world of valves there is always so many to choose from. Flanged ball valves, Threaded ball valves and the list goes on! Other things you must know when calling in for a quote is the size, trim, material, reduced or full port of the valve and most importantly what the valve will be used for. When you have finally decided that you need a flanged ball valve for your application, you will need to decide if you will want a 1, 2 or 3 piece valve. You will make a decision based on cost, maintenance and if it will need to be automated.

First, lets take a look at a one piece flanged ball valve. Contrary to what others say, a 1 piece design ball valve or unibodies are not always the cheapest and you can automate any flanged ball valve with a mounting pad. These valves are not repairable so if one breaks you will need to replace the whole valve which is time and money. If you are looking into a 1 piece flanged ball valve, be sure to check out our Series FS or http://gvcintl.com/files/GVC%20Series%20FS.2011.pdf

A 2 piece and a 3 piece ball valve was definitely designed with maintenance in mind as it can be easily cleaned. The biggest difference between the two is that the 3 piece can be taken out of line without affecting the two end caps while the 2 piece can not. As far as cost, a 3 piece is more expensive up front but in the long run it could be a wiser choice as the seats and seals are replaceable and with a 2 piece you will need to replace the valve entirely if there are any issues. If you are looking for a 2 piece flanged ball valve, take a look at our Series CFS, FS600, or

http://gvcintl.com/files/GVC_Series_CFS.pdf

http://gvcintl.com/files/GVC_Series_FS600.pdf

If you are looking for a 3 piece or a 3 piece in Trunnion take a look at http://gvcintl.com/files/000%20GVC%20SERIES%202T-3T%20Secured%20o.pdf

Source: Valve MD For more information on valves please visit our catalog page here: http://gvcintl.com/catalog.html

Flanged Ball Valves 2" and 3" ANSI 600

Flanged Ball Valves 2″ and 3″ ANSI 600

 

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)

 

20 RP VS 20 FP

Have you ever wondered what the difference of a 20 Reduced Port Ball Valve and a 20 Full Port Ball Valve?What do you think the differences are after reviewing the chart above?

Observers below:

–   Operations Director states, “Well the cost is a big one, however, the CV Factor changes. Although, the port also changes, but a Reduced Port constricts the flow while the Full Port allows the flow to just flow.”

–   Vice President of Sales & Marketing states, “One is full port and the other is reduced; however, a full port sizes go up to ¾”

–   Account Executive-Inside Sales Account Manager states, “One is full port and the other is standard port, however 20RP’s are considered full port up to ¾” (Water, Oil & Gas Applications. And 20FP’s are a seal welded design.”

–   Account Executive-Inside Sales Account Manager states, “20 RP’s are considered full port up to 3/4”

 

The actual differences are: The CV Factor, how one port functions as compared to the other port, Full Port are a Seal Welded Design, Weight, Length, as well as Height

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