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Posted by on in Actuated Valves

b2ap3_thumbnail_actuated-valve-blog.pngValves are one of those critical inventions that go unnoticed by many. They play an important role in our world by controlling, regulating, guiding and directing the flow of assorted types of liquids, gases, steam or flowing materials such as mill, grain, etc.

Valves are made of steel, iron, steel, bronze or PVC and can handle high temperatures and pressure points. In certain applications, the velocity, which is controlled by the valve, is vital in the success of the system in which it is applied and can be manually controlled or automated. In every industry, there are various types of valves including ball, butterfly, v-port, solenoid, sanitary, knife gate, plug and many more. The following is just a few examples of where valves are critical in a particular application: sewage/waste water plant, dams that controls a body of water, valves in your vehicle that control gas flow or oil flow to your engine and oil and gas refinery companies.

Oftentimes, an actuator is attached to the valve to administer pressure control and flow control in applications where it is crucial that the actual value be the same as the set point value. This motor box is operated by pneumatic pressure or an electric current. It then changes this energy into motion which changes or moves the valve positioning in order to keep to the set point that was entered into the actuator by the operator.

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Posted by on in Valve 101

b2ap3_thumbnail_butterfly-valve-article-image.jpgThere are various butterfly valves being utilized in every industry imaginable. The butterfly valve, aka quarter-turn valve, is one of the most popular and economical valves. You may not realize it, but you encounter butterfly valves on a daily basis. These valves, made of carbon steel, cast iron, stainless steel or plastic, are being utilized in many applications where assorted types of fluids, gas, air, steam are being controlled by shut-off or throttling. This valve is excellent for shut-off applications and the disk can completely block the passageway for fluids.

The body of a butterfly valve is comprised of a metal disk with a rod that runs through the disk. The rod is connected to an actuator or a manual lever which controls the disk turning it parallel or perpendicular to the flow. Depending upon the application, the disk can be made of plastic, steel, carbon steel or stainless steel. There are different options of actuators for this valve: pneumatic, electric and electro-hydraulic, manual and a gear type.

There are 3 types of butterfly valves. The standard butterfly valve is the concentric butterfly valve. The disk is metal with a rubber seat. Next, is the doubly-eccentric butterfly valve consists of various types of material for the disk and seat. This one is more of a high-performance valve. Lastly, the triply-eccentric butterfly valve (known as triple offset butterfly valve) is utilized when the application requires tight shut-off when gas or oil are involved. Being the most of expensive of the butterfly valves, the seats are typically laminated or metal in design.

Butterfly valves can be wafer or lug style. You will see wafer style valves installed when the valve is between pipe flanges. Lug style simply means that there are holes machined so that it can be bolted to the flange. These valves are typically used in HVAC applications, water systems, OEM, or irrigation for positive shut-off. Lug style will be a bit more expensive and are used at the end of the line.

When it comes to ordering butterfly valves for your specific application, you want to make sure that you are ordering from reputable and experienced company such as Valtorc International. Before you order, please know what element(s) you are dealing with, know the size needed, type of material and pressure flow, if possible. We can offer an assortment of trim features to ensure a perfect match for your particular valve needs.

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Posted by on in Valve 101

We all know that valves are present in our everyday lives, but valves work a lot “behind the scenes”—controlling what might seem like the “uncontrollable”.  Without valves, we would have engineering issues on how to regulate and control steam, water, air, corrosive liquids, gases and other materials. You can already see WHY valves are important, but WHERE did valves originate, you ask? Good question…

Maybe ancient man watched the beaver as he built his dam across the river. In ancient times, man used tree trunks, thick grasses, rocks, boulders and branches to regulate water. The Egyptians and Greeks also designed valves to lead water to irrigate their crops and provide water to their villages. However, the Romans were the ones to truly develop their canal systems and had a higher engineered technology behind those systems. Due to various country invasions, one may be led to believe that the Romans stole some of their technologies that they utilized. Either way, the Romans took their technology findings on to further develop the bronze plug valve which enabled them to distribute water to buildings.

It was not until the Industrial Revolution that valves really evolved to the next level. Steam was the power required to reform and strengthen this era and replaced muscle or “horse” power. Valves along with the patented steam engine made it possible to pump water out of mines. During this time, the US was able to increasingly provide mining jobs to those out of work. Mining, agriculture, textile mills, manufacturing plants, steel production, transportation and many other industries were emerging quickly. The economy exhibited unprecedented growth and life was getting better financially for most. Water and steam along with the evolution of the valve, contributed highly to the success of the Industrial Revolution industries.

Today, there are diverse types of valves made of materials such as stainless steel, carbon steel, cast iron, bronze, brass, PVC, CPVC and other alloy materials. Valves can be very small in size or up to 102 tons, which is the largest valve in the world! (See http://www.valveworldexpo.com/cipp/md_valve/custom/pub/content,oid,1943/lang,2/ticket,g_u_e_s_t/local_lang,2)  The application determines what type of valve you would need in order for your line to be successful. When ordering your valves, you want to ensure that you work with a reputable company such as Valtorc International. They will want to know all aspects of your application to determine which type of valve(s) would be best suited for your needs. Here is something else to think about—ask the supplier/manufacturer if their products are made in the US.  Let’s strengthen our economy and keep sales in our country when we can!

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