High Pressure Ball Valves – Erreesse

High Pressure Ball Valves are suitable for topside or subsea installations with a restricted range of available constructions and materials. A careful selection is required in this case: carbon steel, stainless steel or other low alloys can be used, however duplex or high strength materials with good or excellent resilient properties should be used for ball, seat rings and stem, both for manual or actuated ball valves, in order to withstand pressure ratings and actuators maximum allowable stem torque (MAST), unless specified by the customer or when combined with other service conditions. Soft seated ball valves can be supplied with a thermoplastic seat insert with good wear resistance and low friction coefficient: Nylon, Devlon V and PEEK should be selected; elastomer seat inserts are also available upon request. Seals are mostly made by O-ring elastomers, FKM ED, HNBR ED and FFKM, anti-explosive decompression requirement is mandatory. Alternatively, PTFE lip seals can be used. High pressure ball valves can be manufactured according to API 6D, API 6DSS, ASME B16.34, ASME B31.3, ASME B31.4, ASME B31.8, section V, Section VIII Div. 1 and 2 Section IX, ISO 14313, ISO 17292, EN 1092-1 or equivalent standards.

Design pressure from 20 bar(g) to 1035 bar(g), in combination with other service conditions in hydrocarbon processes, refining, petro-chemistry, determinates ball valve construction and material selection.

This application can exist in combination with other service conditions, including corrosive & dirty applications with toxic substances, flammable liquids (LNG, LPG or NGL condensate) or generic hydrocarbon gas in high pressure or high temperature applications.

-Low Pressure applications from PN20 (ANSI 150) to PN50 (ANSI 300)

Ball valves with this design pressure range are suitable for topside or subsea installations with a wide range of available constructions and materials: carbon steel, stainless steel or other low alloys without any particular requirement regarding strength and resilient properties; no specific care is required to select thermoplastic inserts and elastomer seals, unless specified by the customer or when combined with other service conditions. Soft seated ball valves can be supplied with a thermoplastic seat insert: PTFE, RPTFE, Nylon, Devlon V and PEEK; elastomer seat inserts are also available upon request. Seals are mostly made by O-ring elastomers in FKM, HNBR, EPDM, FFKM and FEPM. Low pressure ball valves can be manufactured according to API 6D, API 6DSS, ASME B16.34, ASME B31.3, ASME B31.4, ASME B31.8, section V, Section VIII Div. 1 and 2 Section IX, ISO 14313, ISO 17292, EN 1092-1 or equivalent standards.

-Medium Pressure applications PN100 (ANSI 600)

Ball valves with this design pressure range are suitable for topside or subsea installations with a large range of available constructions with few requirements regarding material selection: carbon steel, stainless steel or other low alloys can still be used, however it is recommended a careful selection for stem materials which should be limited to good strength and resilient materials for gear operated or actuated ball valves, unless specified by the customer or when combined with other service conditions. Soft seated ball valves can be supplied with a thermoplastic seat insert: PTFE, RPTFE, Nylon, Devlon V and PEEK; elastomer seat inserts are also available upon request. Seals are mostly made by O-ring elastomers, FKM ED, HNBR ED, FFKM and FEPM, with explosive decompression resistance in high pressure gas services, while it is not strictly required if liquids are present. Alternatively, PTFE lip seals can be used. Medium pressure ball valves can be manufactured according to API 6D, API 6DSS, ASME B16.34, ASME B31.3, ASME B31.4, ASME B31.8, section V, Section VIII Div. 1 and 2 Section IX, ISO 14313, ISO 17292, EN 1092-1 or equivalent standards.

-High Pressure applications from PN150 (ANSI 900) to PN420 (ANSI 2500)

Ball valves with this design pressure range are suitable for topside or subsea installations with a restricted range of available constructions and materials. A careful selection is required in this case: carbon steel, stainless steel or other low alloys can be used, however duplex or high strength materials with good or excellent resilient properties should be used for ball, seat rings and stem, both for manual or actuated ball valves, in order to withstand pressure ratings and actuators maximum allowable stem torque (MAST), unless specified by the customer or when combined with other service conditions. Soft seated ball valves can be supplied with a thermoplastic seat insert with good wear resistance and low friction coefficient: Nylon, Devlon V and PEEK should be selected; elastomer seat inserts are also available upon request. Seals are mostly made by O-ring elastomers, FKM ED, HNBR ED and FFKM, anti-explosive decompression requirement is mandatory. Alternatively, PTFE lip seals can be used. High pressure ball valves can be manufactured according to API 6D, API 6DSS, ASME B16.34, ASME B31.3, ASME B31.4, ASME B31.8, section V, Section VIII Div. 1 and 2 Section IX, ISO 14313, ISO 17292, EN 1092-1 or equivalent standards.

-Very High Pressure applications from PN720 (ANSI 4500) to PN1035 (API 15000)

Ball valves with this extreme design pressure range are suitable for topside or subsea installations with a restricted range of available constructions and materials. A careful selection is required in this case: duplex or high strength materials with excellent resilient properties should be used. Soft seated ball valves can be supplied with a thermoplastic seat insert with excellent wear resistance and low friction coefficient: Devlon V and PEEK should be selected; elastomer seat inserts are also available upon request. Seals are mostly made by O-ring elastomers, FKM ED and HNBR ED, anti-explosive decompression requirement is mandatory. Alternatively, PTFE lip seals can be used unless specified by the customer or when combined with other service conditions. Very high pressure all valves can be manufactured according to ASME B16.34, ISO 17292, API 6A, API 17D, ISO 14723 or equivalent standards.

Ball valve construction is mainly defined by service conditions, to choose a valve model please select relevant temperature range (high temperature, low temperature or cryogenic applications) and required process fluid (utility, corrosive & dirty applications).