India & Bangladesh : Exclusive Representative For : Gesint S.r.l., A.P.I. S.r.l., Italvalvole® S.a.s & India's No -1 Reseller For : Eliar Elektronik San. A.Ş., Gefran Spa, Nöding Messtechnik GmbH, Aeco s.r.l., Novotechnik, Contelec SA, Seatex, BDC, Min-Tec Industrial S.r.l, Gelec - Industrial Electronics.
ITALVALVOLE

Shut-off valves

Shut-off valves, also known as on-off valves, are devices used to intercept industrial process fluids. They are made of a variety of materials, depending on the conditions of pressure, temperature and compatibility with the fluids being conveyed. The most commonly used materials for the valve bodies are grey iron and ductile iron (GJL 250 and GJS 500), carbon steel (WCB) and stainless steel (CF8M).

The valves have been devised and designed so as to optimise the maximum flow rate and the Kv, and reduce the load losses as much as possible. Globe valves are made with 2 or 3 ports, with square body, angle seat and conveyed flow. They are installed in standard process industries, for example in the dyeing industry, the textile industry, in the chemical industry, in thermoregulation processes and in food and pharmaceutical applications.

 Butterfly valves

Butterfly valves are valves fitted with a disc shutter that rotates around a normal axis in the direction of the pipe where they have been installed. The role of the valves is to intercept or divide the flow of the fluid/gases conveyed. In particular, butterfly valves are used when exact precision is not needed and a limited load loss is required.

Butterfly valves are mainly made up of a valve body, usually made of cast iron (grey or ductile) or stainless steel (CF8), by a disc shutter (stainless steel or other materials) that can rotate around an axis diameter, thus reducing the flow section until closure, and by a sealing seat.

Ball valves

The ball valve is the most commonly used valve for the interception of fluid in hydraulic pipes. Its operating mechanism is based on the rotation of a spherical valve fitted with a cylindrical cavity that allows for the closure, opening or throttling of the conveyed flow. This is the operating principle of 2 and 3-port ball valves.

The 3-port ball valve differs from the 2-port in that, instead of the ball having a rectilinear passage, it has an "L" or "T" shaped passage in the ball. These two modes of passage connect three openings that can be communicating or not between each other, depending on the configuration of the valve.

Control valves

The control or modulating valves are devices that are used to control the flow rate of the fluid during the industrial process. All this takes place by adjusting the shutter position between the valve's opening and closing position.

The valves' control can be linear or of equal percentage. There is an increase in the flow rate following the steady increase of the valve opening in the linear control for the entire stroke of the valve itself. Whereas with the equal percentage, the flow increases as a result of the increase of the valve opening and in proportion to the flow itself, thus obtaining the possibility of adjusting the minimum flow in the first part of the valve stroke and modulating those higher in the final part of the stroke.

Safety valves

Safety valves are devices used for the protection of the systems and are usually used to control the pressure of the carrier systems for air, saturated steam, superheated water, nitrogen and gases. Upon reaching the set pressure, the valve opens by means of the "burst" of a shutter which offloads into the atmosphere or into a conducting pipe, thereby preventing the system's pressure from reaching critical levels ​​and safeguarding the system and all its parts.

Check valves

Check valves are devices placed on systems with a view to controlling the fluid and with the aim of directing the flow in a single direction. Typically, these valves are formed by a shutter, disc or ball, constrained by a guide and pushed by a spring against a seat. If there is insufficient or no fluid pressure, to the extent that it infers on the force of the spring, the valve remains closed. The passage of the fluid takes place when the system pressure increases to the point that it opens the valve, subsequently overcoming the elastic force of the spring.

Filters

Filters are used to collect impurities found in the systems, preserving their integrity and avoiding damage to the interception and control valves. They are used both on systems with gas/vapour flow as well as those for fluid flows.

Our filters are used in the textile, dyeing and finishing, water treatment, chemical sectors, and in general where the fluids treated are compatible with the materials of the filters themselves.

Actuators and cylinders

Rotary actuators may be found in the pneumatic or electric versions. They are mainly used in the motorisation of ball valves or butterfly valves; in effect, very often, due to special requirements, a manually operated valve must be mechanised and, thanks to a suitable dimensioning, this can be done on a valve which was previously handled manually by a lever or gear.

Flanges

Italvalvole® produces flanges for various needs and applications. The flat slip-on welding flanges are made of AISI 304 stainless steel in custom sizes "Italvalvole - R Series", or according to the EN 1092-1 standard with drilling in compliance with PN 6 PN 10 and PN 16.

On request, our company can supply customers with threaded flat flanges and loose flanges with butt welding support flare. There is also a series of printed flanges available both in flared version as well as the slip-on welding version.

Electric or pneumatic instruments

The role of a positioner is based on the principle of equilibrium of forces, comparing the standard signal of a pneumatic controller with the stroke of the valve and transmitting a positioning amplified pressure to the valve's servomotor. The series of ITV positioners is available in both rotary positioners as well as linear positioners that are selected according to the type of valve to which it will be applied. The pneumatic, electropneumatic or SMART version is available for each model. Thanks to the special assembly kits and the arrangement of the valves, all the positioners are easy to install.