Sanitary valves refer to a device particularly designed for applications where sterile and clean processing is necessary. Some of the fields where these valves are used more often include pharmaceutical, dairy, medical, food and chemical fields where easy cleaning is a must. Contact surfaces of these valves are made polished and crevice free to make sure that no material remains in the fitting. It is very important to prevent the exposure of perishable things and unsafe chemicals.
Types of Valves
Many types of sanitary valves are available in the market. Some more popular valves include check valve, air valve, butterfly valve, gate valve, ball valves and relief valves. Now, to get an understanding of how these diverse valves work and what their key features are, we should discuss type by type, just to name a few below.
The working principle of gate valve is very simple. Planar ceiling surface is an important feature present between the seats of valve and gate. Gate refers to rectangular or round opening that lifts out of the fluid path. This valve is ideal in the situations where you need a straight line flow. However, it is also suitable for applications that demand minimum restriction.
This kind of valve is an outstanding device whether you need it for industrial purpose or for any type of commercial use. Design of these sanitary valves is either totally open or close. However, unless one specifically demands, these are not meant for restriction of liquid flow. Different materials are used in the process of manufacturing gate valves such as cast iron, brass, steel bronze, forge steel, PVC and stainless steel. Flanged, threaded and socket weld are some major types among those gate valves available in the market.
The purpose of check valve is to allow the flow of gas or liquid in only one direction. This is a self activating device that does not permit the liquid or gas to move towards incorrect path. Gas or fluid can move smoothly towards the right path while the valve automatically closes to prevent the back flow. That is why these valves are also famous as unidirectional valves or non return valves.
A spherical disk is the main part of a ball valve also known as quarter turn valves. This disk alone is responsible for regulating the flow of liquid through the valve. If the application demands consistent sealing and firm shut off then you need a device with round closure. Ball valves are identical in such type of situation. Long life, easy repairing process, easy operation and support up to a temperature of over 480 degree Fahrenheit are some features that make this type of sanitary valve a popular choice.
Butterfly valves are ideal for the purpose of regulation or isolation of liquid flow. Quick shutoff is another key aspect of such sanitary valves. The quick shutoff is made possible since the closure mechanism is controlled by disc. Light weight and low cost further add to the popularity of these valves.