Diverter Valve

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Diverter Valve

What is a Diverter Valve?

Diverter Valves are processing valves designed to direct flow from an inlet to one of two or more outlets. They can also be used for flow control and to converge two lines into one. Diverter Valves are primarily used to handle powders, dry solids and slurries, although some types are available that can handle liquid service. They are ideal for applications where the conveying or pumping of materials to multiple vessels or silos is needed.

Types of Diverter Valve

There are two main types of diverter valves. Both types switch flow from one line into one of two outlets.

One type is Wye Line Diverter, which contains a hinged disc at the intersection to close one of the two outlets. This type of valve is best for handling dry bulk materials in dilute phase vacuum or pressure pneumatic conveying systems. They are designed to eliminate material cross contamination and buildup. 

The second type of diverter is primarily used for liquid services. Instead of using moving parts (like the disc in the wye line diverter), the flow stream is altered by pneumatic pressure differential.

There are 3 Standard types of Diverter Valves 

  1. Y type Diverter Valve

  2. T type Diverter Valve

  3. R type Diverter Valve

  • Y type Diverter Valve

A standard Y type diverter valve with one inlet and two outlets. The process flow enters the top connection and the outlet flow is to either or both of the outlet lines existing in parallel below the valve body.

  • T type Diverter Valve

A standard T type diverter valves. In all designs the angular relationship of the outlet ports may be changed to meet the requirements of the installation. Special designs are also available for large size valves or high flow rates.

  • R type Diverter Valve

The R type diverter valve is similar to the Y type except that the outlets are at right angles to the inlet flow. This design frequently utilises rotating, contoured pistons/rams on one or both sides to assure smooth, unobstructed flow. This is a particularly useful feature for highly viscose media such as polymer or heavy gas oil with high solids content.

Choice of Diverter Valve configuration or type depends on a number of factors including flow characteristics of the medium, available space, piping layout and process or application requirements.

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Diverter Valve Applications 

Diverter valves have the primary purpose of splitting or combining process media into one or more streams. They can be widely found in the

  • Chemical

  • Polymer

  • Refining industries 

 Broad Variety of Applications

  • To split one large process line into many smaller lines.

  • To replace several isolation valves and T-pieces in order to eliminate back flushing of dead spaces.

  • To keep one line in service whilst maintaining another.

  • Switching between filters, without downtime or pressure and flow variations.

  • To switch between control valves or pumps.

  • For high viscosity media, where dead or slow spaces lead to poor product quality.

  • To combine a process isolation and a start up dump valve in one valve body.

  • Where space does not permit larger valves or extensive piping.

  • To integrate multiple valve process functions into one valve.

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Diverter Valves are Used

Diverter valves are useful in flow control and pipeline circuits; as they may be operated in conjunction with other valves allowing for medium-to-high flow switching or metering control. The flow may be controlled through a variety of devices depending upon the application at hand; a small solenoid valve can be used to maintain switching control, pressure relief valves can be used in systems where pressure regulation is the determining factor, or the diverter valve itself can be used to control the pressure differential and flow rate.

Diverter valves are used extensively in a wide range of commercial applications including agriculture and farming, aviation and aerospace, chemical manufacturing and processing, construction, coolant, HVAC and cryogenic distribution, food processing, medical and pharmaceutical services, sanitation and waste processing, and water delivery.

 

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