SI VALVES manufactures a full range of Gate and Ball Valves for Offshore & Subsea applications in the Oil & Gas exploration and production, suitable for water depths up to 3000m.
Gate Valves are double block and bleed valves as they can grant zero leak with pressure on the upstream and downstream side towards the body, even when the valve is fully open. Solid particles cannot penetrate into the body, both when the valve is in the open or in the close position. Furthermore, they provide superior bubble tight sealing capabilities and unmatched robustness in harsh services with high pressure and high temperatures. The full bore through conduit design minimizes the turbolence of the flow and when the valve is open the pressure drop is equivalent to that produced by a pipe with the same diameter and length. Moreover, the valve is perfectly suitable for pigging operations.
SI VALVES supplies the gate valves in a wide range of materials and configurations to meet any specific need of the application and customer’s requirements. SI VALVES valves are manufactured with hardfaced sealing surfaces with Tungsten Carbide Coating (TCC). Many optional features are available for seat and stem seals, hardfacings and end connections. Materials are sourced from qualified suppliers on the base of specifications that reflect the industry standards (API, ASTM, BS, DIN, NORSOK or others), but do also incorporate additional requisitions resulting from long experience.
The gate valves may be manually operated (by ROV or by diver, if feasible) or fitted with linear hydraulic actuators, with or without ROV override. SI VALVES offers the highest level of performance and reliability being its actuators engineered to grant safe and extended operating life.
SI VALVES designs, manufactures and tests its products in accordance with all the relevant Industry standards and codes (ANSI, API, ASME, BS, DNV, ISO, NACE, PED and others). The double expanding gate valves can be manufactured to conform up to product specification level PSL 4.
SI VALVES stresses its willingness to produce engineered expanding gate valves; therefore it welcomes requests for special size, class and design requirements.
APPLICATIONS
Permanent subsea
Temporary subsea
Corrosive services
Deep water
Rapid cycling operating conditions over extended periods of time
Severe conditions with no routine maintenance requirements
SIZE
NPS 1/2 TO NPS 48
DN 15 TO DN 1200
PRESSURE RATING
UP TO ASME 4500
UP TO API 15000psi
TECHNICAL FEAUTERS
Pressure containing components made by solid forged materials
Design according to API 6DSS, 25D or 6A
Full customization for all test ports, scraper rings, high visibility letters and relief systems
Engineered, manufactured, tested and optimized for your specific application
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