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VALVES

BALL VALVES FULLY WELDED TRUNNION MOUNTED

Tecnica Industriale SRL is glad to show you its range ball valves TRUNNION FULLY WELDED.

- Size: from 2'' to 48''
- Rating: from ANSI 150 to ANSI 2500
- Materials: from carbon steel to superduplex
- Types of end connection: flanged end, buttwelding end, ring joint end;
- Soft and metal to metal seals
- Applications: Gas, oil and petrochemical service

The valve body is closely shaped around the ball to produce a lightweight robust design.
Valves are available in full or reduced port.
The stem seal integrity is achieved with three seals, two o-rings and a firesafe graphite gasket.
Anti blow out stem design permits replacement of the graphite gasket whilst the valve is under pressure.
Provision of emergency sealant injection is fitted as standard.
All valves are designed to meet the anti-static requirements of BS 5351.

BALL VALVES FULLY WELDED TRUNNION MOUNTED-FEATURES

CONSTRUCTIVE VERSIONS

The ball valves TRUNNION FULLY WELDED range can be manufactured with the following connection:

- 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;

- FLANGED with flanges at the two ends.

- RTJ.

BALL VALVES FULLY WELDED TRUNNION MOUNTED-DESIGN

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

Seat features

The independent springs precharge the seat of the Trunnion valves, ensuring the contact between the seat and the ball. This feature improves the seal even at different pressures.

Design features

The trunnion design is realised to maintain a fix position of the ball between the upper shaft and the lower Trunnion bolt.

Operating stem

The antiblowout system of the stem (which is independent from the ball) permits the gasket change with the valve in fully closed position, even under pressure.
The shaft seal is ensured through three gaskets (two o-rings and one in graphite).

Antistatic system according to BS 5146

The electrical continuity among all valve components is determined by a stainless steel charged spring between the ball and the Trunnion bolt.

Low operation torque system

Thanks to the self-lubricant bearings placed on the upper valve bolt and on the trunnion bolt the friction factor is reduced, improving the valve operation.

Automatic pressure control system

The valve is designed with a system that permits to regulate the pressure excess that could be created into the body. The excess pressure is regulated thanks to the loaded spring that will open the seat.

By-pass and drain

The by-pass and drain holes can be assembled upon customer request.

Emergency seat

In case of emergency the valve seal can be regenerated thanks to the "emergency seat" system that operates through the sealing supplied with the valve.

BALL VALVES FULLY WELDED TRUNNION MOUNTED-VALVE OPERATIONS

The ball valves TRUNNION FULLY WELDED range is operated through a positioning control.

Our valves are manufactured for the following kind of controls:

Manual through lever and position bush;

Manual through reduction gear equipped with handwheel;

Electric equipped with reduction gear;

Pneumatic with double or simple effect;

Hydraulic with double or simple effect;

In order to ensure a perfect functioning of the valves Tecnica Industriale SRL can directly carry out the calibration and assembling of the actuators.

BALL VALVES FULLY WELDED TRUNNION MOUNTED-ACCESSORIES

These valves can be supplied with extended shaft for underground applications or for remote and inaccessible installations.

The extensions have a tube design and a water tight.

The customer must specify the high that is measured form the centre line of the valve up to the handwheel axis.

VALVES

BUTTERFLY VALVES

\|	triple eccentric butterfly valves	\|	damper butterfly valves
\|	double eccentric butterfly valves	\|	butterfly valves with elastomer seat

BALL VALVES

\|	ball valves side entry	\|	ball valves cryogenic
\|	ball valves top entry	\|	ball valves fully welded
\|	ball valves floating	\|	ball valves sub-sea

PLUG VALVES

plug valves self lubricant

plug valves standard

GATE VALVES

gate valves

GLOBE VALVES

globe valves standard

globe valves y

CHECK VALVES

check valves

MONDEO

MONDEO VALVES

\|	Check Valves Idrja	\|	Check Valves Small
\|	Check Valves	\|	Ball Valves
\|	Filters	\|	Manifolds - Flanges
\|	Pressurized Tanks	\|	Pressure Gauge
\|	Accessories

Tecnica Industriale Srl
S.P. 231 Km 1,110 - 70026 Modugno (Ba) - Italy
Tel +39 0805367090 - Fax +39 0805367091
E-mail: info@tecnicaindustriale.com

Send us an email

info@tecnicaindustriale.com

Send us a fax

+ 39 0805367091

Call us

+39 080.5367090