Types of Valves and their Applications

 

Introduction:

There are a wide variety of valves with their own configurations that suits numerous services and conditions with different uses of different fluids by different materials at different pressure and temperature conditions. All these valves are for starting or stopping a flow, regulating or throttling a flow, preventing a back flow or for relieving and regulating the pressure in the fluid or the gaseous handling of applications. Common valve types include: Gate, Globe, Ball and Butterfly valves.

 

Gate Valves

The gate valves are basically designed to function as the isolation valves wherein these valves control the flow of the liquid through the pipes which are a part of the system. To start or stop flow of water or any other types of liquids, these valves are the ones that are affixed to the pipelines. The gate valves are used for varied generic purposes due to which they can be seen commonly in homes and commercial centres. A typical Gate Valves Supplier suggests using various materials like stainless steel, alloy steel, forged steel, cast iron, etc., for manufacturing these valves.

Applications:

•     Highly suitable to use in higher temperature and higher-pressure conditions.
•    Also they are used for on-off applications.

Globe Valves :

The globe valves are one of the most popular type of valves which is used in various types of applications. Being similar to gate valves they are used in linear motion to throttle the flow. These valves aid to control the flow in a pipeline by the way of  regulating the position of a movable disk (or a plug)in connection to the stationary ring seat. A typical Globe Valves Supplier prefers this valve due to its major advantage of a not leaking as much as other valves does under extreme usage conditions.

Applications:

·         These valves are primarily used for the throttling purposes.

·         They also may be considered for using as a general-purpose flow control valves for high-temperature applications.

Ball Valves :

The ball valves use a ball to control the flow of substances from one opening to the other i.e., these valves function by allowing the hole to be open, blocked, or opened partially in order to regulate the flow of the gas or the liquid. As suggested by most of the Ball Valves Supplier these valves are an ideal choice for using along with gases as they offer a better sealing than other valve types. Due superior quality of their overall operating characteristics, the ball valves are also used for the wider spectrum of the isolation applications. These valves are available in varied range of sizes and materials also they are available in full through and full flow conduit.

Applications:

• These valves are used for flow and pressure control as well as in the shut off for slurries, normal liquid, corrosive fluids and gases.
• They are at times used in the oil and natural gas industry, but they also find a place in most of the manufacturing sectors, chemical storage, and even in the residential uses.

Control Valves:

It is necessary for automatic process control system. It can be used either for controlling level, flow rate, temperature, pressure etc. The selection of control valve involves its operation mechanism, process conditions as well as requirements. It can be manual or power operated.

 

The main parts of a control valve are actuator and body. The signals from the process are received by the actuator and accordingly it closes or opens the valve. Control valves can be single plug balanced globe type or double plug balanced globe type or having diaphragm or butterfly design. Single plug type valve gives better sealing. Pneumatic diaphragm and spring actuator is most commonly used. Control valve can have size ranging from 3mm to 500 mm and can be used for pressures upto 4000 kg/cm² and temperatures-250°C to 800°C. Material of construction for control valve can be cast iron, carbon steel, stainless steel, monel, nickel alloys, hastelloy and even plastic also. A typical Control Valves Suppliers prefers this valve due to its major advantage of a not leaking as much as other valves does under extreme usage conditions.

 

Butterfly Valves

The butterfly valve got its name from the action of the disc in a wing-like method which operates at the right angles to the flow. Its primary advantage is that it has a seating surface which is not critical. These valves are designed for the flow isolation due to the fact that the disc impinges against a resilient liner in order to provide a bubble tight situation with a lower operating torque. Being compact and coupled with a simple construction, these valves facilitate an easier pipe arrangement which according to the Butterfly Valves  Suppliers is one of the economical option in the industry. Due to the disc, these valves have slightly reduced flow characteristics which is dependent on its working environment conditions.     

Applications:

• These valves are used in chemical, pharmaceutical and in food processing industries.
• They are also used for handling corrosive liquids at low temp and pressure.

About Fevisa :

We Fevisa being one of the leading Valve Manufacturers in Spain and Valve Suppliers ensure that we strictly adhere to the standards of the industry in order to provide the customer with a long-lasting and future proof valve designs according to their industrial needs like  UL FM approved Valves and WRAS approved Valves. 

We are properly known for Valve Stockist . Our Europe origin valves are good in packing, dispatching and after-sales service and our uncompromising quality make the buyer to approach us for future dealings.

Conclusion:

This write up is to provides a basic and necessary understanding of the common types of valves and their selection methods for uses in various environments. For more information on the related products visit our website and consult our team of experts at Fevisa, one of the leading suppliers of Stock valves  and valve manufacturers worldwide.