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Application fields:
Subsea

ALL PRODUCTS 

BALL VALVES

SUBSEA TRUNNION
FULLY WELDED

Engineered in-house and built with premium materials, our valve ensures zero external leakage and maximum strength, perfect for buried or critical subsea applications.

Subsea trunnion ball valve by Viar Valvole
Subsea ball valves application — Viar Valvole
Application fields:
Subsea

ALL PRODUCTS  

BALL VALVES

SUBSEA TRUNNION
FULLY WELDED

Engineered in-house and built with premium materials, our valve ensures zero external leakage and maximum strength, perfect for buried or critical subsea applications.

Subsea trunnion ball valve by Viar Valvole
Viar Valvole — sf lb technical features
TECHNICAL FEATURES

SUBSEA TRUNNION
FULLY WELDED

It features a body with no external joints, minimizing the risk of water ingress. Compliant with API 6DSS and tested for deep subsea environments, it ensures stable performance and long-lasting durability under demanding operating conditions. The fully welded body ensures maximum structural integrity, while selected materials provide corrosion resistance.

Design

2 or 3 pieces / Welded Body

Design

2 or 3 pieces / Welded Body

Pressure Class & Size

ANSI/ASME classes from 150 to 4500
Sizes from 1/2” to 60” according to API 6DSS
Special bore diameters and/or design pressures available upon request

Pressure Class & Size

ANSI/ASME classes from 150 to 4500
Sizes from 1/2” to 60” according to API 6DSS
Special bore diameters and/or design pressures available upon request

Material Selection

Carbon Steel, High resistance Carbon Steel
Low Alloy Steel and High Alloy Steel
Austenitic Stainless Steel, Super Austenitic Stainless Steel
Duplex Stainless Steel, Super Duplex Stainless Steel
Nickel Alloy
Titanium Alloy
Forged or Casting

Material Selection

Carbon Steel, High resistance Carbon Steel
Low Alloy Steel and High Alloy Steel
Austenitic Stainless Steel, Super Austenitic Stainless Steel
Duplex Stainless Steel, Super Duplex Stainless Steel
Nickel Alloy
Titanium Alloy
Forged or Casting

Configuration

Direct Trunnion / Plate Supported Ball with Floating Seats spring energized seats
Single or Double Block & Bleed configuration in closed or open/closed position

Configuration

Direct Trunnion / Plate Supported Ball with Floating Seats spring energized seats
Single or Double Block & Bleed configuration in closed or open/closed position

Operating Depth

Up to 3000m

Operating Depth

Up to 3000m

End connections

RF, RTJ, BW, HUB, Compact Flanges, Special Flanges

End connections

RF, RTJ, BW, HUB, Compact Flanges, Special Flanges

Operation

Subsea Gear Box, Subsea Hydraulic actuators, ROV direct drive.

Operation

Subsea Gear Box, Subsea Hydraulic actuators, ROV direct drive.

RELIABILITY & EXPERIENCE

Viar Valvole — contract
Performance Guarantee

Each valve is internally engineered and has successfully passed rigorous testing at every stage to ensure maximum reliability, in compliance with any international standard and client requirements.

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Special Applications

This valve is also available for special services in full compliance with API 6A standards.
See the dedicated API 6A technical specifications.

KNOWLEDGE APPLIED

Subsea trunnion ball valve by Viar Valvole
Subsea trunnion ball valve by Viar Valvole
Subsea trunnion ball valve by Viar Valvole
Subsea trunnion ball valve by Viar Valvole
Subsea trunnion ball valve by Viar Valvole
Subsea trunnion ball valve by Viar Valvole
Viar Valvole — sf lb technical features
SERVICES

CUSTOM PRODUCTS
AND SUPPORT AT EVERY STAGE

In addition to valve manufacturing, we offer a full range of services supporting the entire product lifecycle — from design and commissioning to on-site maintenance.

Project
Consulting

We provide comprehensive support to EPCs and end users, simplifying complexity at every stage, from design to post-order

Fully custom design &
engineering

Each valve is designed in-house and every solution is tailored to the specific needs of each customer

Special tests and
materials

We perform custom testing and select materials based on application and technical specifications

Commissioning and site
services

Our support continues from delivery through installation, including maintenance and long-term service contracts

Viar Valvole — sf market
WE’VE SIMPLIFIED COMPLEXITY FOR

Subsea 7BonattiSaipemMaire TecnimontSubsea 7BonattiSaipemMaire Tecnimont

SamsungBPChevronEniKuwait EnergySamsungBPChevronEniKuwait Energy

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CONTACT

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CONTACT

Want to know more?

Fill in the form below, we are at your disposal.