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
Stainless steel ball valves are definitely one of the popular materials that many people buy. They are perfect for the food and beverage industry, agriculture as well as the pulp and paper industries. The reason behind this is because stainless steel does not corrode and when dealing with food which we consume you do not want your machines corroding. White it is true that stainless steel (SS) does not easily corrode or rust, it really depends on the oxygen level in atmosphere. For example, if it is a poor air circulation environment, depending on the grade of the SS valves the valves may or may not corrode. Therefore, it is always important when dealing in such circumstances to get a high grade type of SS valve.
The material stainless steel is not to be confused with carbon steel as carbon steel will rust at one point in its life. The difference between the two metals is the amount of chromium present. Stainless steel’s resistance to corrosion and staining, low maintenance, and familiar lustre make it an ideal material for many applications. The alloy is milled into coils, sheets, plates, bars, wire, and tubing to be used in cookware, cutlery, household hardware, surgical instruments, major appliances. These are examples of a few items one may be familiar with.
It is very important to know which grade of SS you need for your application as stated above if the grade is low, it will not last or you will have problems later down the road. Therefore, always consult with the manufacturer before buying. Global Valve and Controls can provide you with 316SS, 317SS and 304SS just to name a few. There are many different grades and one may not know that 304 is not to be used in the presence of sulfuric acid.
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.
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.
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
The valve has many components that you can choose from when ordering, thus it is always important to know the media or application the valve will be used in. Knowing what end connections you need is very crucial. Not all applications can accommodate.
Raised Face (Flanged) Connections
Ring Type Joint (Flanged) Connections
Socket Weld Ends
Occasionally Butt Weld (Not Standard Production End Connection)
Fact: Did you know that Flanged End Connections are known for being easy to apply to your project?
You may wonder what the difference is between Flanged and Threaded Ends. Flanged Valves feature more bolts, resulting in less tightening, in contrast to Threaded End Connections which need more tightening. Flanged Ends overall can be used for any type of Valve, i.e. Gate, Globe, Ball, or Check. When you have a Threaded End, ultimately you will be working with a Low Pressure type situation. GVC offers Valves with Threaded End connections and can be modified to Socket Weld or Socket Weld x Threaded if need be.
Socket Weld End Connections are commonly used on Stainless Steel or Carbon Steel Valves. When you have a higher temperature and pressure rating you would want to turn to the SW Connection. GVC offers SW Ends and features their leak free seal.
Last but not least, the RTJ and Butt Weld End Connections: GVC stocks majority RTJ End Valves opposed to Butt Weld End Valves. Butt weld end valves are applied to most applications where a higher grade of steel, temperature and pressure is needed. An Engineer from an article I found states, “RTJ Valves have grooves cut into their faces in which they obtain steel Ring Gaskets. They seal when tightened bolts compress the gasket between the Flanges into the grooves, deforming the gasket to make contact inside the grooves, thus creating a metal to metal seal.” Each valve end is beveled to match with the thickness and bevel on the pipe.
Can you guess what the end connections in the picture are?
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.
A 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.
A 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.
Global Valve and Controls Media Containment Bonnet
Global Valve and Controls strive to provide earth friendly options, especially the containment of fugitive emissions being released in the earth’s atmosphere. Over 44% of a plant’s expense, is due to leaking valves and the replacement of them because of old technology. GVC has a new technology to lower this expense by a substanial decreased cost of ownership.
GVC has been manufacturing an accessory, the Media Containment Bonnet, since 2004. The MCB is unique because of the installation, maintenace and application, as an option to our ball valves. The following highlighted reasons to incluse this accessory for $300 – $500.00 at time of purchase of the ball valve series are as follows:
Increases the longevity of the ball valve. A standard increased life expectancy of a leaking ball valve, with the GVC MCB application, is an extra three years.
No down time due to the shut down of a plant or pipeline because of the removal of a leaking valve. Within 10 mins, the MCB is installed with no tools other than a wrench is necessary.
If you are interested in an instructional video or a lunch and learn instructional demonstration, please call Global Valve and Controls at 1-866-965-8GVC (482) or email Lparker@gvcintl.com.
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?
– 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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For more information on ASTM, go to www.gvcintl.com and click on the ASTM hyperlink.