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VALVES

BALL VALVES  CRYOGENIC

- Size: from 1'' to 12'' - Rating: from ANSI 150 to ANSI 2500 - Types of end connection: flanged end, buttwelding end, ring joint end; - Materials: austenitic stainless steel; - Seating face: overlay stellite 6 or tungsten. Carbite+kel-F inserts; - Applications: Production, transport and storage of liquefied gases such as nitrogen, argon and natural gas (down to -254 °C). All the valves are fire safe design and have a secondary metal to metal seal. Extended bonnets with sufficient length, usually specified by customer, are supplied for all valves to keep stem packing at an adequate safe distance. All cryogenic valves are completely cleaned, degreased and then assembled with care to avoid contamination.

BALL VALVES CRYOGENIC FEATURES

Tecnica Industriale SRL is glad to show you its range of ball valves CRYOGENIC. - Size: from 1'' to 12'' - Rating: from ANSI 150 to ANSI 2500 - Types of end connection: flanged end, buttwelding end, ring joint end; - Materials: austenitic stainless steel; - Seating face: overlay stellite 6 or tungsten. Carbite+kel-F inserts; - Applications: Production, transport and storage of liquefied gases such as nitrogen, argon and natural   gas (down to -254 °C). All the valves are fire safe design and have a secondary metal to metal seal. Extended bonnets with sufficient length, usually specified by customer, are supplied for all valves to keep stem packing at an adequate safe distance. All cryogenic valves are completely cleaned, degreased and then assembled with care to avoid contamination. CONSTRUCTIVE VERSIONS The CRYOGENIC range can be manufactured with the following connection: - FLANGED with flanges at the two ends. - 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; - RTJ.

BALL VALVES  CRYOGENIC DESIG

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 CRYOGENIC VALVE OPERATIONS

The CRYOGENIC 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.

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     inviaci un e-mail info@tecnicaindustriale.it inviaci un fax al n.   +39 0805367091 chiamaci al n.    +39 080.5367090         Tecnica Industriale Srl S.P. 231 Km 1,110 – 70026 Modugno (Ba) - Italy Tel +39 0805367090 - Fax +39 0805367091 E-mail: info@tecnicaindustriale.it

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