Top Entry Ball Valve Manufacturer in Italy – Valvesonly Europe

Valvesonly Europe is a Top Entry Ball Valve Manufacturer in Italy, producing high-performance valves for process control, isolation, and pipeline service in oil and gas, petrochemical, and power industries. Designed and manufactured in Italy in compliance with API 6D, API 608, and ASME B16.34, our valves are fully certified under PED 2014/68/EU. The top entry design allows maintenance of internal components without removing the valve from the line, reducing downtime in high-pressure applications.

Function & Working

Top entry ball valves have a single-piece body with a bonnet that allows access to the internal parts—ball, seats, and stem—from the top. This makes them ideal for applications where inline maintenance is critical. The quarter-turn operation offers quick shut-off, and the precision-machined ball ensures low torque and tight sealing. Available in both floating and trunnion-mounted designs, these valves provide long-term reliability for process and pipeline operations.

Advantages

Complies with API 6D, API 608, ASME B16.34, and PED 2014/68/EU
Inline maintenance without pipeline removal
Low operating torque and high sealing integrity
Fire-safe and anti-static construction (API 607 / ISO 10497)
Full-bore and reduced-bore options
Double block and bleed arrangement on request
Metal or soft seats based on service conditions

Types of Top Entry Ball Valves Manufactured

Top Entry Floating Ball Valve
Top Entry Trunnion Mounted Ball Valve
Top Entry Metal Seated Ball Valve
Top Entry Cryogenic Ball Valve
Top Entry Jacketed Ball Valve
Top Entry Double Block and Bleed Valve

Industries Served

Oil and Gas Transmission and Refinery Units
Petrochemical and Chemical Processing
Power Generation and Steam Systems
Marine and Offshore Platforms
Water Treatment and Desalination
Industrial Utilities and Process Plants

Materials (Body, Bonnet, Ball, and Trim)

Category Material Standard / Grade Typical Application
Forged Carbon Steel ASTM A105 / A105N ASME B16.34 / API 6D High-pressure hydrocarbon and utility service
Forged Low-Temp Carbon Steel ASTM A350 LF2 ASME / API Cryogenic and low-temperature pipeline service
Cast Carbon Steel ASTM A216 WCB / WCC ASME / EN General refinery and power service
Stainless Steel ASTM A182 F304 / F316 / F316L API / EN Corrosive, chemical, and clean service
Duplex and Super Duplex ASTM A182 F51 / F53 / F55 API / NORSOK Seawater, desalination, and offshore systems
Nickel Alloys ASTM B564 Inconel 625 / Monel 400 — Sour gas, acid, and high-temperature media
Aluminium Bronze ASTM B148 C95400 / C95800 — Marine and seawater service
Trim (Stem / Seats / Ball Overlay) SS 316, Inconel 625, Tungsten Carbide, Stellite AWS / API Wear, erosion, and corrosion resistance
Seat Inserts PTFE, RPTFE, PEEK, Devlon, Metal-to-Metal — Service-specific sealing materials

Technical Specifications

Design Standards: API 6D, API 608, ASME B16.34, ISO 17292, PED 2014/68/EU
Fire Safe Standards: API 607, ISO 10497
Testing Standards: API 598, EN 12266-1
Size Range: DN25 – DN1200 (1″ – 48″)
Pressure Ratings: PN10 – PN420 / Class 150 – 2500
Temperature Range: –196 °C to +600 °C (material-dependent)
End Connections: Flanged (EN 1092 / ASME B16.5), Butt Weld (BW), Socket Weld (SW)
Operation: Manual (Lever / Gear), Pneumatic, Electric, or Hydraulic Actuator
Seat Options: Soft-Seated or Metal-Seated depending on application

Special Features

Fire-safe and anti-static construction
Blow-out proof stem design
Emergency seat and stem sealant injection system
Drain and vent ports as per API 6D
ISO 5211 mounting pad for automation
Inline maintenance without disassembly of pipeline
Single or double piston seat configurations available

Why Choose Valvesonly Europe

Manufactured in Italy under API and PED-certified systems
Designed for critical isolation in refineries, LNG, and power plants
Custom-built in forged A105, F316, F51, F55, LF2, and exotic alloys
Proven sealing integrity under high-pressure and high-temperature service
Delivered with full EN 10204 3.1 certification, test reports, and documentation

 

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