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Rubber Valves - Types and Functions

By Edited Nov 3, 2016 0 0

Varied applications in many industries require the services of rubber valves. They are components that are produced and designed in a variety of shapes and sizes in order to meet the demanding influences of their customer’s applications. They are predominately used to maintain or restrict the flow of materials being processed; through hoses, pipes, and tubes or complete and sometimes intricate systems. The simple principle of a valve is to permit material flow when open and restrict flow when closed.

 

The materials, from which rubber valves are manufactured, are also variable and again, designed to meet the specific needs of the user. Aside from natural rubber, other materials include Buna-N, Neoprene, Nitrile, SBR, Silicone, solid sponge rubber and Viton. From these varied materials, the varieties of valves needed to satisfy a demanding market are made. For the provision of specialized services other models of valve include check and ball valves, air pressure and gate valves, among others.  The rubber material is utilized for the allowance of one way sealing valves, for example, the “Duckbill, Flapper and Umbrella Rubber Valves, which are able to withstand harsh, chemical conditions. Parameters for specific flow designs are able to be produced by the use of rubber.

 

Valves are generally utilized within pumps and applications involving piping. Manufactured from a variety of materials, such as iron, steel or bronze, the use of rubber valves supplement other components made from the same material, such as gaskets and seals. The valves are used within many industrial products, including domestic food processors, tires for various purposes, weatherproof electrical connectors, respirators and many other everyday applications.

Other applications being serviced by these versatile valves include usage as nozzles on air splurging systems, hopper tanks, railroad cars and silos, for the prevention of materials packing or bridging. Add to this, their use on diffusers to assist in aeration and aerobic digestion and in sludge holding tanks as a means of maintaining solids in suspension. Other features of rubber valves include their ability to alleviate stress in piping and as noise reducing components. A further asset is their capability to reduce vibrations and allow for lateral and angular movements. Additional axial compression and elongation are enabled as they are non-corrosive and act as an abrasion resistant elastomer.

The rubber valve, known commonly as a “Duckbill” valve, has within its construction, a hollow, cylindrical elastomer body. The one end is formed with walls that taper into an elongated slit which has the formation of a “Duckbill”. The opposite end possesses an oval shaped opening. This will form a tight bond around a tube or pipe, which when pressure is forced into the valve, the “Duckbill is opened. A pressure control rubber valve offers a sealing ability and is extremely durable. It can function as a temperature controlled cut-off valve and if the valve size is reduced, it becomes a method of pressure control. The pressure control form will include a movable part, operating by the means of differential pressure.

The ability, quality and reliability of the rubber valve make it an integral part within many industries. Its basic simplicity and action is a saving in downtime on a production cycle and related personnel hours wasted. The design and construction enable it to meet the specialized demands of dependent users.

 

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