Fully Welded Ball Valve

The valve design that combines the maximum strength at the minimum weight, as well as a high resistance to pipeline internal and external loads.


  • Compact and light design
  • High resistance to pressures and loads
Fully Welded Ball Valve

ATV supplies a full range of Fully Welded Ball Valves, trunnion mounted, for onshore and offshore topside applications in the Oil & Gas transmission.

Fully welded ball valve offers the advantage of a compact envelope, which allows for increased strength and significant reduction in weight. Furthermore, since the body is made by welding forged parts, there are fewer potential leak paths when compared to side-entry and top-entry ball valves.

ATV supplies fully welded ball valves in a wide range of materials and configurations to meet any specific need of the application and customer’s requirements. Many optional features are available for seat designs, seat and stem seals, and end connections. 

ATV fully welded ball valves are suitable for manual operation or for power assisted operation. ATV takes full responsibility in selecting the most suitable size for operating conditions.However, ATV welcomes customers’ supplied items too: in such a case, ATV responsibility is limited to the assembling of the actuator on the valve and testing of valve and actuator system. On request, ATV may participate in the actuator selection together with the customer.

Materials are sourced from qualified suppliers on the base of specifications that reflect the industry standards (API, ASTM, NORSOK, BS, DIN or others), but do also incorporate additional requisitions resulting from long experience.  

ATV Fully Welded Ball Valves comply with ISO 14313 requirements and with all the relevant Industry standards and codes (ANSI, API, ASME, BS, ISO, NACE, PED and others). The weldings of the body are perfomed and qualified according to ASME Section IX; non-destructive examinations (NDE) are performed in compliance with ASME VIII Division 1 and 2.

ATV stresses its willingness to produce engineered fully welded ball valves; therefore, it welcomes requests for special size, class and design requirements. 


Fully Welded Ball Valve - Specifications


APPLICATIONS Transmission and distribution pipelines, HIPPS
APPLICABLE STANDARDS API 6D, ISO 14313, ASME VIII, ASME B16.34, ASME B16.10, ASME B16.5, NACE MR0175 and other diffused Industry standards
RANGES 2” ÷ 60” Class ANSI 600, 2” ÷ 48” Class ANSI 900, 2” ÷ 36” Class ANSI 1500, 2” ÷ 20” Class ANSI 2500. Larger sizes available on request.


Fully welded body with spherical or cylindrical vessel
Forged body construction
Trunnion mounted
Full bore or reduced bore
Single piston effect (SPE) seats
Soft or Metal seated
Double Block and Bleed (DBB)
Anti-Blowout stem
Fire-Safe design


Flanges (to ASME B16.5 up to 24” and B16.47A for 26” and larger)
Compact flanges (to Norsok L005)
Buttwelded ends (to ANSI 16.25)
Hub ends for clamped connections (as per customer requirement)


Carbon steel with partial or full CRA overlay on the wetted areas
Low alloy carbon steel with partial or full CRA overlay on the wetted areas
Duplex or Superduplex stainless steel
Nickel Alloy


Handwheel or manual gear
Electric Multi-Turn
Pneumatic quarter turn actuator
Hydraulic quarter turn actuator


Double piston effect (DPE) seats or mixed configuration (SPE/DPE)
CRA Overlay, full or partial
Wear resisting hardfacing on sealing surfaces
Stem-Sealant injection
Seat-Sealant injection
Stem extension for underground installation

Advanced Technology Valve S.p.A.

Headquarters and manufacturing plant:
Via Ombriano 2
I-23823 Colico (LC), Italy
Tel. +39 0341 932111
Fax +39 0341 930785
E-mail: info@atvspa.com

Our Mission

We provide flow control solutions (valve and actuators) with the highest standards of reliability and performance to the most critical applications of the Oil & Gas upstream and downstream industry, Oil & Gas transmission, Power industry.