double eccentric butterfly valves, double eccentric butterfly valves distributors, double eccentric butterfly valves retailers

- Size: from 3'' to 48''
- Rating: from ANSI 150 (others upon request)
- Types of end connection: flanged end, buttwelding end, lug and wafer;
- Materials: all materials upon request;
- Applications: Heating, ventilation and air conditioning, oxygen, gas or liquid, chemical and
petrochemical plants.

This range of valves ensures a perfect zero leakage thanks to the couple closure that ensures a continue performance.
These products are manufactured in respect of API 609, ISO 5752, ASME B16.10 and they can substitute at any time (through a simple installation) other kind of valves previously included in the plants.
The compaction and lightness represent other advantages of the butterfly valves, reducing the weight and the dimensions in comparison with other kind of valves on the market.

DOUBLE ECCENTRIC BUTTERFLY VALVES-FEATURES

Tecnica Industriale SRL is glad to show you its range of double eccentric butterfly valves SOFT SEAL.

This range represents Tecnica Industriale SRL's answer to the requirements of the customers that need to install valves suitable to work in difficult conditions.
For this reason the range SOFT SEAL grants a perfect seal and for this reason it is suitable to work into different industrial plants (heating, ventilation and air conditioning, oxygen, gas or liquid, chemical and petrochemical plants).

The range SOFT SEAL offers valves dimensions from 3'' to 48''.

The valve manufacturing following the standards API 609, ISO 5752, ASME B16.10 allows the same to substitute (through a simple installation) other kind of valves previously included into the industrial plants.

The variety of available construction materials (in respect of customers' requests) and the deep study of the designing criteria represent the main elements for the development of a reliable and easy-maintenance product.

Finally the compactness and lightness represent other advantages of the butterfly valve, reducing the weight and dimensions in comparison with other kind of valves on the market.

CONSTRUCTIVE VERSIONS

The SOFT SEAL range can be manufactured with the following connections:

- FLANGED with flanges at the two ends.
- LUG with threaded holes in the body. This connection is more compact and with lower face to face
dimensions.
- WAFER with four holes for the valve centering. Lightness is its main advantage.
- BUTTWELDING with two welding bevels made in accordance with standard and with the customer
requests.The welding bevels are equipped with centering ring for the positioning and line welding.

Upon simple request the customer we can realise special connections.

DOUBLE ECCENTRIC BUTTERFLY VALVES-DESIGN

Drawing
In respect of ANSI B16.34, ASME Sez. VIII and IX, API 609

Face to face
In respect of API 609, ISO 5752, BS 5155

Flanges coupling
In respect of ANSI B16.5, MSS-SP-44, BS 3293, UNI, DIN, ISO

Inspection
In respect of API 598, API 6D, ANSI B16.104, ISO 5208

Marking
In respect of MSS-SP-25

Valve manufacturing
Integral: welded, forged or oxygen cut body
Electro-welded: welded body

Temperatures
Starting from -40°C up to + 180°C using suitable materials.

Our design dept. works with the more sophisticated and advances information engineering applications for the realisation of the products. Thanks to these simulating programs our valves are designed in 3D and their structure is verified through the Finite Elements System in order to obtain the simulation of a perfect functioning.

Here below we show you an example of graphic representation concerning triple eccentric butterfly valves

Valve body pipe submitted at an internal pressure of 6 bar

The following images simulate a shaft during the torsion phase

Graphic representation concerning the powers distribution during the closure phase of the seal ring

DOUBLE ECCENTRIC BUTTERFLY VALVES-VALVE OPERATIONS

The SOFT SEAL range is operated through an irreversible control that ensures the maintenance of the pressure on the seal when the valve is closed.

Our valves are suitable for the following kind of actuators:

Manual gear through reducer equipped with handwheel;

Electric equipped with reducer

Pneumatic with double or simple effect

Hydraulic with double or simple effect

Upon specific request of the customer we can supply operation systems different from those here above indicated or equipped following the customer requests.

In order to grant a perfect functioning of the valve Tecnica Industriale SRL carries out the calibration and assembling of the valve directly into its factory.

DOUBLE ECCENTRIC BUTTERFLY VALVES-ACCESSORIES

Shaft lubricating systems

A greaser placed on the upper end of the valve (near the stem bearings) allows the shaft lubrication.

TA-LUFT

Our SOFT SEAL range can be equipped with system to avoid emissions in the atmosphere. This insulating system called "TA-LUFT" can be supplied upon simple request of the customer. The above described result is obtained through the change of the packing ring. The valves can be equipped with Garlock EVSP 9000 gasket to avoid leakage during the helium proofs.

Live-loading

A careful shaft manufacturing, the insertion of special bearings for the shaft centering and the use of compression springs are the requirements to obtain a live-loading performance. This performance reduces the packing ring maintenance necessities.

Standard angular dial indicators

The insertion of a graduated indicator (placed on the actuator) permits to verify the opening angle of the valve.

Connection pipes
Connection pipes can be supplied upon simple request of the customer.