Válvulas para fondo de tanque VARIVENT®

Conexiones de tanques

Hay disponibles varias posibilidades para conectar las válvulas VARIVENT® al tanque. La conexión de tanque del tipo T se utiliza para instalar válvulas en el fondo del tanque. La conexión de tanque del tipo U se prefiere para la instalación lateral y horizontal de válvulas en la pared del tanque.

Ejemplos de aplicación

Las válvulas de cierre simples se utilizan si el tanque se utiliza con líneas de llenado y vaciado separadas. No es posible limpiar la tubería mientras el tanque está en proceso.

Mixproof tank shut-off valves are used if the tank is operated with common filling and emptying lines. Mixproof separation between the pipeline and the inside of the tank allows the pipeline to be cleaned while the process in the tank continues.

In the classic variant, the mixproof tank shut-off valve separates the process in the tank from the supply to the following valve matrix, meaning that the tanks can be filled, emptied and cleaned flexibly and in parallel with one another.

For some time now, mixproof tank bottom valves have been installed horizontally on a special connection unit directly below the tank (ECO-MATRIX™). In this case, the process lines do not converge in a valve matrix, instead they are routed directly underneath the tanks in order to save space.

Ventajas

• El sellado radial evita fugas y que el disco de la válvula vibre con alta presión 
• El equilibrador evita que el disco de la válvula se cierre demasiado rápido en la dirección de flujo del producto, reduciendo el riesgo de martillos de presión 
• Debido al uso de actuadores estándar VARIVENT®, esta válvula se puede ajustar para varios parámetros de proceso 
• Con relación a la válvula de lavado, la válvula para fondo de tanque también se puede instalar horizontalmente, por ejemplo, en el nuevo concepto de tubo ECO-MATRIX

Limpieza de la cámara de fugas

Actuador de elevación (tipo T_RC, T_RL)
Double-seat bottom valves type T_RC are equipped with a lifting actuator which enables individual lifting of a single valve disc during cleaning of the pipe or the tank. The cleaning media passes the seal of the lifted valve disc, cleans the leakage chamber and then flows out through the leakage outlet into the periphery. This way, it is possible to clean all surfaces that come into contact with the product, including the surfaces of the valve disc seals.

Spray cleaning (type T_R, T_RL)
The valves have a cleaning connection at the level of the lantern either on its own (type T_R) or additionally alongside the lifting actuator (type T_RL). This connection allows the leakage chamber to be supplied with cleaning media from an external source in order to clean this chamber (in addition to the lifting actuator) by means of an integrated spray nozzle.

After that, the cleaning media flows through the leakage outlet without pressure into the periphery. Cleaning takes place with the valve closed, which means the seal surfaces in contact are not touched during cleaning.

This way, the leakage chamber can be cleaned independently from the pipe cleaning. In addition, this allows interim flushing to occur before or after a switching procedure of the valve.

If valves are equipped with both a lifting actuator and the possibility of external spray cleaning, then spray cleaning is only used for interim flushing during the individual switching procedures, whereas thorough cleaning is performed by lifting.

Datos Técnicos