Blog posts of '2021' 'October'

Check out Anix's wide range of Butterfly valves in the product pages above!

The term Butterfly valves is also used to refer to quarter-turn valves where its main function is to control or isolate the flow of liquid passing through the pipes. This type of valve is commonly used in treatment of waste or water specifically in the agriculture industry. This is also one of the most common types of valve that is being sold these days especially because it is quite durable, requires less maintenance, and is made to withstand even heavy duty needs.

When compared to an electric ball valve, the butterfly valve works almost the same. At the center of the pipe, there is a flat disc that has a rod running straight through it that is then connected to the actuator. The actuator is located outside of the valve where, if it is turned, can actually control the position of the flat disc to control the flow. A few rotations can help in controlling the amount of water or waste flowing through the pipes easily.

Butterfly Valve's Parts

The term “butterfly” is used to refer to the metal disc which can be found on the rod which when positioned to a quarter turn, opens the disc allowing the flow of liquid unhindered. Through a few adjustments on the valve, the flow of the liquid can either be restricted or let loose. This feature is one of the advantages that can be gained when using a butterfly valve especially for industrial uses. Another is the size of the butterfly valves. Compared to other types of valves out there such as the electric ball valve, butterfly valves are far lighter and more compact hence they don’t require additional support when in use.

The best thing about the butterfly valve is that it contains the following: a butterfly disk, resilient seat, actuator, body, packing and of course a notched plate that is used for positioning. Once the resilient seat is added to the body of the valve, compression is added thus causing a seal around the upper and lower points where the stem runs through as well as at the disk edges. If the seat suffers from any damage, the packing provides additional seal around the stem of the butterfly valve for added protection.

Although there are different types of butterfly valves being sold today, the best type is one that is configured for pneumatic control. This type makes use of a gearbox that requires a signal from the operator to both close and open the electric ball valve. The advantage to using this type of butterfly valve is its flexibility since it allows either single or double actuation. In the case of the single actuation, it is important for it to have a fail-safe so that if the power gets cut off, the valve will be able to turn into the closed position. In the case of double action valves, they need signals every time they are being opened or closed since they are not loaded with a spring.

Non Return Check Valve for efficient fluid flow control

Non return check valve is utilize in places where the application uses a flow of viscous or corrosive fluids. The nature of the fluids makes it necessary for the valve to be:

• Highly efficient
• Non reactive to the fluids and corrosion
• Absolutely fool proof
• Easily accessible
• Very rugged

One may see these kinds of valves in desalination plants where the water is being purified before being taken to the bottling plant. One will also see these kinds of valves when the place has need for treatment of effluents and or if the water contains contamination of chemicals and fertilizers. The prevention of the back flow of the water makes it possible to achieve a good degree of cleanliness in the purification process. The valve is also used in mining industry and in power plants.

The valve is a mechanical device which makes it possible for the regulation of the flow of fluids through pipes and tubes. Normally one does not want the fluid flow to be interrupted once it starts flowing. This is generally the case, but sometimes one may need to check the flow for:

• Pressure
• Purity
• Timing
• Maintenance reasons

The valve is incorporated in those places where one would expect a back flow. Meaning, when there is a rise in gradient or if the volume of the water or fluid body suddenly increases then one may expect a sizable back flow.

The non return check valve is essentially having two portions within the body. On each side of the body there is an opening one for the water or fluid to enter and the other for the exit. Since these are most common, one does not even notice them in the house. They do not need any maintenance and so there are no external controls present.

The non return check valve has different names. It is also know n as the one-way valve or the clack valve. Many of the gas pipes also use these kinds of valves since the regulation of the gas flow is very tough unless the valves are really efficient. One of the guiding mechanisms of these valves is the pressure know n as the cracking pressure which is the actual upstream pressure necessary for the operation of the valve.

The various kinds of check valves are:

• Diaphragm check valve
• Swing check valve
• Ball check valve
• Stop check valve
• Lift check valve

In places where there is need for cutting off the flow, irrespective of the upstream pressure, the stop check valve is used. This is done mechanically and the valve has external controls present which help in the operation.

The lift check valve is one that operates under pressure; meaning that it will store the fluid till one releases it by mechanical means of opening the valve. Once the fluid starts flowing, then the valve closes and the fluid starts to collect again building up the pressure. Use of valves has made the advancements in science possible.

• Diaphragm Non Return Valve
• Sanitary Non Return Valve
• Pneumatic Non Return Valve
• Plastic Non Return Valve
• Non Return Valve Manufacturers
• Non Return Valve Exporters
• 15mm Non Return Check Valve
• Drainage Non Return Valve

Check out Anix's line of products by visiting the product pages above!

A valve is a device that controls the flow of a fluid by opening, closing. Valve (in an open state), allows to flow the fluid from higher pressure to lower pressure.

Main Types of Valves

There are several type of valves each differentiated by its function and are used in different scenarios.

• Ball Valve
• Gate Valve
• Plug Valve
• Butterfly Valve
• Globe Valve
• Pinch Valve
• Disc Check Valves

Ball Valve

Ball Valve Symbol

A ball valve operates in a quarter-turn and uses a hollow, pivoting ball to control the fluid flow. In open state, the ball’s hollow side is aligned with the flow and in the closed state, the ball is facing the fluid. The ball is rotated by the valve handle.

Ball valve is most commonly used in houses for plumbing works. This type of valve is mostly suitable for the pipes with less than an inch of diameter.

Gate valve

Gate Valve Symbol

Gate valve opens by lifting rectangular gate out of the fluid path. The gate opens and closed through a rotating wheel. These type of valves are mostly used in the pipes with more than 3 inch of diameter.

Gate valve are used where minimum obstruction is required. It has a strong sealing mechanism which makes it ideal in several industrial usages. These valves are widely used in high pressure water supply lines and high pressure of gas lines.

Plug Valve

Plug Valve Symbol

Plug valve is an advanced form of Ball valve. The mechanism of plug valve is similar to a standard quarter-turn valve with several advancements. It uses a cylindrical gate instead of a ball gate.

Plug valve are used for hot liquid or steam. Thanks to its mechanical design that helps to bear high pressure and high temperatures whereas ball valve can’t be used for hot liquid or steam as it can melt the valve sealing which usually is made of silicon.

Butterfly Valve

Butterfly Valve Symbol

Butterfly valve comes in several types, each has its own functions and implementation. As its name suggests, butterfly valve open like a butterfly. It comes with a gearbox and a rotating wheel.

The main benefit of this butterfly valve is that it can be easily adapted with process automation (electronically controlled).

Lug Style Butterfly Valve

In Lug style butterfly valve, the rotating liver is locked with a lug (handle). To open or close the valve, the Lug (handle) is pressed and then the liver can be rotated.

Flanged Butterfly Valve

Flanged butterfly valves are suitable for congested areas. The flanges are already attached to this type of valves and additional fittings are not required to install this type of valves. To buy these type of valves, you can visit Johnsonvalves.co and Nibco.com

Butt Welded Ends Types

Butt Welded Valves are installed using “butt type welding”. The inlet and outlet caps of the valves are designed to be welded. These type of valves can be installed with minimum instruction to the operator. Often used for autonomous processes where machines are supposed to weld using process automation.

Butterfly Valves seat types variation

Butterfly type valves also varies in the seat material. Some valves comes with soft seats (silicon, rubber, plastic etc) and some comes with metal seats (brass, mild steel, cast iron etc).

Globe Valve.

Global valve is similar to Gate Valve but it is more robust. When the valve is rotated to open the rod remains in the screw (like Screw Jack). These type of valves are mostly used for industrial purposes where heavy pressure and temperatures are used in the pipes.

Globe Valve Symbol

Difference between Gate Valve and Globe Valve

The main difference of globe valve and gate valve is the level of complexity in mechanical design. The globe valves are more robust, more advanced. Gate valve use a flat disc as its (sealing) seat whereas the globe valve is having a wedge shaped disc seal which performs as a cork.

One more difference is that the gate has its stopper disc in the Y axis (Top – down) and the Globe type has its stopper disc at X axis. This basic difference makes the globe valve irresistible to high pressure whereas the gate valve is more prone to leakage when used in very high pressures.

Pinch Valve

Pinch Valve Open, Closed and Throttling States

As suggested by its name, the pinch valve pinches (squeezes or release) a tube to close or open the valve respectively. The tube is made of good quality rubber that can easily pinched and when it’s released comes to its original position.

A Pinch Valve is an economical piece of equipment that works like a tap. It has an on/off function, to shut off, allow or control the flow of any media passing through it. The Pinch Valve is made up of three parts: Body / Housing. Internal rubber sleeve.

Pinch valve can also perform throttling (a process where pressure is increased by half-pinching the rubber pipe.

Pinch valves are mostly used where the liquids needs to keep completely isolated. It is used in medical equipments, clinical and chemical analyzers. They are also used in a wide range of other laboratory equipment.

Check valve

Check & Foot Valve Symbol

Check valves are one-way (non-returning) valve. It is often installed at the bottom of a tube well, pit of water and also in the water geysers.

A seal is used with a spring, when water is pumped from one direction, the spring opens with the suction pressure. When the pump stops, the spring pulls the valve seat and automatically closes the valve.

Foot Valve

Foot valve is similar to the check valve except it comes with a stainer which restricts solid chunks of garbage.