Starline S.p.A.

Starline ball valves are manufactured as 3 PIECES BOLTED CONSTRUCTION. This allows easy maintenance in line due to the possibility of “swing-out” of the center section, permits a flexibility in production due to the unlimited combinations of possible end connections and asymmetric construction. Not to count the possibilities of any distributor to change quickly the configuration of the valve available in stock to serve any market request.

Starline manufactures a complete line of SINGLE and DOUBLE BLOCK & BLEED ball valves. Our SBB/DBB ball valves are available in an extensive range of designs, materials, sizes and pressure classes and are in full conformance with API, EEMUA and NACE specifications. Starline uses only high-quality ITALIAN made forged materials inspected & tested to International Standards and utilizes advanced manufacturing technology with special emphasis on safety, quality and long service life of our products. The forging material can ensure the best rigidity and strength.

Starline manufactures a complete line of ball valves in according to API 6A. They are available in an extensive range of designs, materials, sizes and pressure classes and are in full conformance with API and NACE specifications. Starline uses only high quality forged materials inspected & tested to International Standards and utilizes advanced manufacturing technology with special emphasis on safety, quality, and long service life of products. The forging material can ensure the best rigidity and strength.

Fully designed to cover BS6364 requirements for full tightness in medium and severe cryogenic service. This execution has been fully tested at -196°. Extended stem length is adapted to the valve size according to BS6364 – thermal fins isolate the stem tightness from the cold temperature.

Trunnion mounted ball valves are based on a system that provide a fixed ball and floating seat rings, moving along the valve axis. The side load given by the pressure acting on the ball is absorbed by the bearings. At low pressure, the sealing on the seats is obtained by the spring action on the seat rings. The more the pressure increases, the more it pushes the seats against the ball. Starline trunnion mounted valves are available from ½” to 36” – ASME class 150 to 2500 – as well as API 6A 5000 and 15.000 – in several combinations of materials and execution to cover all possible service application from low temperature to high pressure