Tag: Check Valves

Uses of Check Valves & Non return Valves

Both check valves and non-return valves serve the same purpose, i.e., prevent the fluid from flowing back. Though they serve the same purpose, they are not the same. Let’s have a look at both of them in-depth. 

Check valves

A check valve is a mechanical device used in hydraulic systems to stop the flow of the fluid in one direction and allow free flow in the opposite direction. Unlike other valves, check valves do not require assistance to open and close. They even work if the plant loses electricity or air. Most common types of check valves are:

  • Swing type

    • Top hinged
    • Tilting disk

  • Lift type

    • Piston type
    • Ball-type

  • Dual Plate type

  • Stop Check valve

Non-return valves

A non-return valve is a mechanical device that is used to ensure that the fluid flows in the right direction, where pressure conditions might reverse the flow. Non-return valves are usually operated manually. Most common types of non-return valves are:

  • Spring-loaded non-return valves
  • Clapper type non-return valves

Difference b/w check valve & non-return valves

While many manufacturers consider check valves and non-return valves as the same thing, it is not actually the same. Check valves prevent backflow in defined circumstances, and it has to meet very strict criteria to ensure fluids are not able to siphon back into the systems. Whereas non-return valves need not meet the strict guidelines as check valves. 

Applications of check valve & non-return valves

Check valves and non-return valves are most commonly used in hydraulic systems and pumping stations. Other applications include:

  • Wastewater management
  • Portable water management
  • Irrigation
  • Mining 
  • Food and beverage
  • Oil and gas
  • Pharmaceutical
  • Power plant

Both check valves and non-return valves help:

  • Protect equipment downstream from backflow damage
  • Prevent contamination due to reverse flow
  • Prevent siphoning
  • Keep a vacuum seal

SKG Pneumatics INC is the leading industrial valve suppliers in India. No matter how big or small your requirement is, we can fulfill your order instantly. Explore our range of products to find what you are looking for.

Importance of Check Valves in Hydraulic Systems


A check valve is a mechanical device that is used to prevent backflow in a piping system. In other words, check valves obstruct the fluid flow in one direction and enables unobstructed flow in the opposite direction. The check valve is also commonly known as a non-return valve (NRV) or a one-way valve. 

Check valves have two openings in the body, one for the entry of the fluid and another for an exit. Check valves are largely used in household items, however, they also serve a great purpose in controlling the direction of fluid flow in hydraulic systems. Since there are too many check valve suppliers in India, you need to find the one who provides industrial quality check valves. 

What is a Hydraulic System?

Most industries require a controlled application of force and these operations are usually carried out using electrical or fuel-based machines as a prime mover. However, specially designed enclosed fluid systems can also provide controlled motion and force to the substances. These systems are capable of providing both linear as well as rotary motion and it also allows us to apply high magnitude controlled force. This kind of enclosed fluid-based system that uses pressurized incompressible liquids as transmission media is known as a hydraulic system.

What are Hydraulic Control Valves?

A hydraulic control valve is a device that has the capability to change the opening degree of the fluid flow path. Additionally, control valves are also used to regulate the speed of the fluid flow to the motors and cylinders.

Most common Hydraulic control valves types

  • Directional control valves
  • Pressure control valves
  • Flow control valves

These hydraulic valves can be controlled by manual, mechanical, hydraulic, electric, electro-hydraulic, pneumatic, and input control, on or off fluid flow channels. 

What is the importance of check valves in Hydraulic Systems?

Check valves serve a variety of purposes in hydraulic systems. It is important because: 

  • It blocks pressure spikes
  • Prevents oil lines from draining
  • Blocks oil flow from the accumulator
  • Prevents oil flow from the online pump to the offline pump

Check valves help you prevent backflow in a hydraulic system while control valves help you regulate the speed of the fluid flow in the hydraulic system. With all the different types of hydraulic valves, you need to choose the right one in order to get the job done. 

SKG Pneumatics INC is the top industrial valve suppliers in India. They not only supply check valves, but they also supply other types of industrial valves including control valves. If you’re looking for high resistant valves, then you’re at the right place. Contact us for more information.

Flanged Valves – Types and Applications

Flanged valves allow assembling the system components without cutting or welding pipe. A flange is a rigid joint that can withstand the pressure and pipe loads related to the system and is a structural element of the piping system.The biggest advantage of using a flanged valve is the valve can be removed easily from the pipe. Another benefit is it ensures a tight joint under given operating conditions which helps in avoiding leakage problems.

Flanged valves allow assembling the system components without cutting or welding pipe. A flange is a rigid joint that can withstand the pressure and pipe loads related to the system and is a structural element of the piping system.

Several dominant standards such as British Standard adopted from the European Standard is followed while deciding the size and joints of the flange. Factors like the type of service, material requirement, maximum pressure capacity, and temperature affect the rating of flanged valves.

The biggest advantage of using a flanged valve is the valve can be removed easily from the pipe. Another benefit is it ensures a tight joint under given operating conditions which helps in avoiding leakage problems.

They are made with different types of materials such as cast irons, bronzes, castable alloys, and forged steels. Flanged valves can be used in various industries including food and beverage, chemical, pharmaceutical, oil and gas, and in waste-water management services.

Different Types of Flanged Valves

The major type of flanged valves are ball valves, check valves, butterfly valves, globe valves, and relief valves.

1. Check  Valves : It is used to prevent back flow in a piping system and they can sustain heavy pressure. Check valves can be used in refining and chemical industries, waste-water management systems, and in oilfield production.

2. Ball Valves: It is used to control the flow of substances and possess poor throttling characteristics. Ball valves can be used in oil and natural gas industry. They are also used in chemical storage and many manufacturing sectors.

3. Butterfly valves: They have limited control capability and are used to regulate flow. They require very less maintenance and are very accurate. They can be used in pharmaceutical, chemical, and food processing services.

4. Globe valves: They use linear motion to throttle flow.Globe valves don’t leak as much as other valves. Globe valves can also be used as stop-check valves as the opening-closing time is shorter. They can be used for high-temperature applications.

5. Relief valves: They are used to protect the system during an overpressure event. Relief valves are used in high-rise buildings, high-water pressure inthe urban water supply network, and mines.

6. Control Valves: A control valve allows specific pressure to pass through the system. They can be used in construction, oil and gas industry, nuclear power industry, pharmaceutical, and refining industry.

Conclusion

Flanged valves serve different purposes and are widely used in various industries. Faulty assembly of the valve can cause dangerous leaks so it is advised to clean the connection thoroughly before installing a valve.

SKG Pneumatics Inc. has all types of valve equipment that serve various purposes. All of our products are highly durable and provides the complete value of money.

Ball Valves – Types and Applications

Ball Valves are used to control the flow of the water or any other liquid. The industry has various demands according to the pressure that is having. For case, some of the industries that are dealing with high pressure of water will need the standard quality materials whereas there will be some industries where the amount of the flow will matter.

SKG Pneumatics Inc has been dealing all the type of valves such as Gate valves, Globe Valves, Ball Valve with strainers, Check Valves & Non-return Valve, Gate & sluice valve, Pressure Reducing Valve, Shutoff valves.

There are different types of Ball Valves available in our store. All of these valves used in Plumbing are built with the standard raw material to maintain durability.

Get quality of Ball Valves from leading ball valve supplier

There are many types of valves that are used in the industries. We provide all the valves that you need for all the industries. All the valves are built with great raw materials and the quality to ensure the durability of the product. Along with all of these, we also know about the budget of our customers and hence all the valves are affordable to buy for any of the customers. Here we as ball valve supplier offer different types of valves-

• Split-Body Ball Valve: Here the body is divided into two different parts and the cover along with the ball, seat rings are present.
• Top-Entry Ball Valve: They are available in various size and used by the people who are looking for having a single-piece body with the top entry.
• End-Entry Ball Valve: In this product, the ball is inserted at one end and is retained from other. These are the most affordable valves and are also available in large size.
• Three-Piece — Body Ball Valve: Her body is divided into the 3 parts where one main part is for holding the internals and the stem is released from the top where a hole is given.
• Double Trunnion Ball Valves: The ball is added with the two other integral shaft extensions. These are called the bottom and top trunnions. These are made to hold and for the shaft to rotate freely. A top shaft is used to open and close.

Also, if any of the valves have any variation, we also provide them. All of these are easy to install and will last for a long duration of time. You can use any of these for each and every need.

Different Types of Check Valve and Its Applications


Check valves are designed to pass flow the fluid in one direction with minimal resistance and prevent reverse flow or damage to the passage. Check valves are the most important valves included in any system, whether household or industrial system. Different Check valve Types are designed for different applications.

How does Check valve work?

A check valve is constructed with a valve body, cover, and disc attached to a hinge and swings away from the valve seat to allow the flow of the fluid passing.

Types of Check Valves:

1. Swing Check Valve

The disc is unguided in a Swing Check Valve, when it moves to fully open position or to a fully closed position the fluid flows in a forward direction with minimal resistance. Many different discs and seat designs are made available by SKG Pneumatics to satisfy requirements of varying applications.

2. Ball Check Valves

Ball Check valves are constructed with a spherical ball inside the body which helps to control the flow of the fluid. The ball rotates freely when the fluid is passing by. This unique process makes it ideal for installing it for a viscous fluid.

3. Tilted Check Valves

A tilted check valve is designed with a disc which has a pivot point at the center of the disc. When the flow is streamed the disc open and when it turns to reverse the disc closes immediately. This Tilted Check valve is mostly used in agricultural areas.

4. Dual Disk Check Valve

A dual disk check valve is designed to control the flow of the fluid, the hinge is connected to a plate which rotates and the stream is controlled when the hinge is moved.

5. Silent Check Valve

This check valve availed by SKG Pneumatic are designed to eliminate water hammer and are recommended to use in multi-story buildings. It consists of a spring attached to the disc which slowly closes when the water flow decreases, eliminating the hammering.

6. Nozzle Check Valves

Nozzle check valves are designed to stream the flow of gas, fluid or slurry in low pressure. This check valve doesn’t allow reverse stream as it closes when low pressure is felt than actual.

SKG Pneumatics is the solution to your all piping system including also Industrial Valves. These are some non-return valve designed and supplied by SKG Pneumatics accompanied by Advance, Zoloto, NVR, etc to maintain the safety and better piping system.

Types of Pipe valve

A valve is a device that can control the flow and pressure of the fluid in a pipe. A few either starts or altogether stops the flow of fluid whereas there are some that partially obscures the path.

The different types of pipe valves are explained below in detail.

Ball Valves

Ball valves operate with a quarter-rotary motion. In a ball valve, the flow path is manipulated by the ball-shaped disk which requires a 90-degree turn of the valve handle. It is comparatively smaller in size and lighter than a gate valve.

Butterfly Valves

Butterfly valve can start, stop, and regulate the flow path but only to some extent. It is a simple valve that can be operated by a 90-degree turn of the valve handle. A butterfly valve is not normally designed to give a positive shut-off but modern technology has provided room for improvement in its blueprint. This valve is now capable of a bubble-tight shut-off.

Check Valves

Check valves, or NRVs (non-return valves), supports the unidirectional flow of fluid only. Their function is to check backflow. In check valves, backflow is prevented by “stoppers”. The different kinds of “stoppers” are ball, piston, and swing. Ball and piston check valves work by demanding a little amount of inbound flow pressure. The movement of fluid in a swing check valve is through a pivoting flap which opens only in one direction and ensures that there is no backflow.  

Gate Valves

Gate valves are the most ordinary and the most frequently sold valve type in the industrial valve trade. These act as a block valve for isolating pipe systems since their properties are limited to either opening or closing. There is no restriction in the flow path once a gate valve is opened as it opens all the way. Gate valves are preferred in a straight-line system that requires minimum obstruction. You can regulate a gate valve with the help of a hand-wheel or a piston actuator.

Pressure Reducing Valves

If you are looking for a device to reduce the water pressure, pressure reducing valve is your answer. These valves get down to work by bringing down the quantity of water that flows through a pipe. With the valve, water that was pushing through the pipes at high pressure will be efficiently slowed down.

 

You must surely recognize the valve that you’ve been looking for all this time. Get one from leading suppliers of industrial valves in Delhi as SKG Pneumatics Inc at the earliest, for best prices!

Classifications of Valves According to Functions and Motions

When you are installing a piping system in your building or industry, here is some information provided by SKG Pneumatics that will help you to get the services accordingly. SKG is a one-stop for all types of industrial piping devices with a rugged quality.

Classification of valves according to functions

1. For isolation to the piping system – Gate Valves, Ball Valves, Plug Valve, Butterfly Valve, Diaphragm Valve etc are included.

2. For regulation – Globe valve, Butterfly Valve, Needle Valve, Ball Valve etc are included to provide regulation in the flow of the fluid in the piping system.

3. Safety Relief – Pressure Relief Valves, Vacuum Relief Valves are included.

4. Non Return – Swing check valve, lift check valve are included.

Special purpose valves-multi port valve, float valves, foot valves, knife gate valve, knife gate valve are included for special types of works mostly done in a household or small piping system done for any buildings.

Classification of valves according to motion

1. Linear motion valves – These are the valves that have a stem sliding closure part like slat, plate or disc, or diaphragm which raise or lower the closure part by moving the handle or grip to the device. This comes with easy design, easy maintenance, versatility in sizes, pressure classes etc. These valves are slower in operation but are more accurate in shutting or opening the flow. SKG provides you with a series of valves functioning under motion like Gate, Globe, and Diaphragm valves etc

2. Rotary motion valves – Rotary valves include a closure part that rotates in the body and opens or shuts the flow when a lever attached is made to quarter turn. They come with larger pore size, cost-effective but limited in applications with pressure drops. SKG caters you all type of valves that comes with a rotary motion like Ball Valves, Butterfly Valves, and Plug Valves etc.

The SKG Pneumatics is catering the products that are needed by any type of piping system. They are incorporated in 2005 and have various partners that also cater the devices like an Advance valve, Zoloto valves, NVR Valves, Easyflex Valves and New age Fire fighting equipment. In this new age, firefighting equipment includes Flexible drops, RRL Hose, Sprinklers, Branch Pipe, Hose Reel Drum and Hose Pipe etc.  More of it SKG also deals in Rubber Bellows, that are designed to reduce the noise, vibration and absorb any thermal movements. These Rubber Bellows are vital to install in a piping system.