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what we do

PRODUCTION EQUIPMENT

Zavero Maintains Full internal production capabilities.

  • Internal machining capabilities
  • 5 testing benches up to 60’’
  • Cranes up to 40 tons
  • Special testing equipement

Forged Trunnion

Zavero Trunnion mounted API 6A/API 6D ball Valves are 3 pieces, or split body execution, self relieving spring energized seats, suitable for double block and bleed performance. Seats are available in lubricated or not lubricated execution with different solutions of sealng and fire safe back up gaskets (Soft or metal seated). Stem is blowout proof and provided with emergency sealant injectors to avoid leakage in case of sealing interruption. Antistatic device is also provided. Valves can be complete with lifting lugs and ground feed to facilitate transportation and in line installation.

Double Block & Bleed

Double block and bleed valve is a combination of two bleed valve is a combination of two ball valves with a needle valve between. That design type allows to have an integral compact body and short face to face dimension. You can have different solutions and different valve ends, as per customer request.

Cryogenic

Cryogenic valves are designed to operate at temperature down to -196°C.All metallic parts are manufactured in stainless set, while the soft parts are realized in proper special materials suitable for this so severe application. Normally, the seats are in poliChloro-Tri-Fluoro-Ethylene (PCTFE-Kel-F®) and PTFE lip seals insures the sealing of all dynamic components. Valve banned is extended to keep a vapor room, to avoid the contact of liquid cryogenic media to the gland.

Sub Sea

Subsea ball valves can be manufactured in bolted body or welded body execution. Bolted valves are provided with a double body to closure sealing. The first sealing is to not permit to the sea water to get into the valve. A special sealing is applied to insulate completely the process fluid to the environment. (Special gearboxes or ROV receptacles are installed to be operated at the highest water depths.)

Floating

Available from 1/4” to 6”; ANSI 150 – 2500; RF-BW ends; Side entry, split body (2 or 3 pieces), Lever, gear, pneumatic, hydraulic or electric motor operated; Soft seated or metal-to-metal seated.

Top Entry

Our trunnion mounted top entry art. 55 ball valves are engineered to meet international standards like API 6A, API 6D, ASME B16.34, ISO 17292 and others upon request. The range contains both soft, metal or composite seats that can be configured with single or double piston effect. One piece body manufactured from casting or forging.

Underground

Underground ball valves are usually provided in fully welded body execution with butt welding ends. For this application valves are provided with an extended stem; drain, vent and emergency sealant lines are fitted at the top of the extension.

Materials

SEALING

Seals materials are selected according to the service of the valve and leakage requirement. Zero leakage is easier obtained by soft seals, while metal seated seats provide a better resistance to scratches and to other factors (temperature, pressure, erosion).

PROTECTIVE COATING

Experienced and approved contractors. Qualified trained and certified in accordance with most remarkable technical standard for protective coating.

CRA WELD OVERLAY

Corrosion-resistant weld overlays are used to improve the service life of components made with an otherwise corrosion-prone material. On request, seat pocket area overlay, seal area overlay, or completed cladding on wetted surface welded overlays in Inconel 625, Stainless Steel 316.

get in touch

  • +39 0163 411337
  • info@zavero.com
  • Via dei Martiri, 121/B - 28078 Romagnano Sesia (NO) Italy

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