Pipeline valve systems
API 6D. Pipeline isolation. Explore pipeline isolation, non-return and industrial valve designs for your project.
Back to valve ranges ↗ API 6D ½–86 in size range
Class 150–2500 pressure classes
10 valve types
Valves Flanges Fittings Pipe Valve range
01 Floating Ball Valve↗ 02 Trunnion Mounted Ball Valve↗ 03 DBB Ball Valve - Double Ball↗ 04 Gate, Globe and Check Valve↗ 05 Plug Valve↗ 06 Butterfly Valve↗ 07 Cryogenic Valve↗ 08 Control Valves↗ 09 Safety Valves↗ 10 Ductile Iron Valves↗ Ranges vary by design and configuration. Confirm the final selection against the project specification.
01 Floating ball isolation
Standards & service Pipeline valve selection
Floating Ball Valve Floating ball valves with one-, two- or three-piece bodies for positive quarter-turn isolation.
Select the cast- or forged-steel construction, pressure class and end connection to the project specification.
Technical specifications
Cast-steel size ½–8 in
Forged-steel size ½–2 in
Cast-steel rating Class 150–300
Forged-steel rating Class 800 or Class 150–2,500
Body materials Carbon steel, stainless steel, alloy steel; A105, F11, F22, F5
Service options NACE
End connections RF, RTJ, BW, SW, NPT (by construction)
Operation Handwheel, gear, motor, pneumatic Start an inquiry ↗ 02 Positive quarter-turn isolation
Standards & service API 6D pipeline valves
Trunnion Mounted Ball Valve Trunnion-mounted ball valves in cast or forged steel, with side-entry, top-entry and fully welded constructions.
Select the construction and design standard to suit the pipeline service.
Technical specifications
Trunnion construction 2-piece cast steel: 2–16 in · 3-piece: 16–48 in
Trunnion rating 150–900 LB
Body materials Carbon steel, stainless steel, alloy steel
Service options NACE
End connections RF, RTJ, BW
Operation Lever, handwheel, gear, motor, pneumatic Start an inquiry ↗ 03 Double block and bleed
Standards & service API 6D · EEMUA 182
DBB Ball Valve - Double Ball Double-ball isolation with an intermediate bleed connection, in floating or trunnion-mounted construction.
Two independent isolation valves and a relief valve are combined in one compact unit.
Technical specifications
Design standards API 6D · EEMUA 182
Size ½–10 in
Pressure rating 150–2,500 LB
Construction Floating or trunnion-mounted
Working medium Oil, gas, water Start an inquiry ↗ 04 Core isolation & non-return
Standards & service API 6D + process service
Gate, Globe and Check Valve Pressure-seal gate, globe and check designs for high-pressure isolation and non-return service.
API 6D applies to pipeline gate and check configurations; globe valves are selected to the process specification.
Technical specifications
Valve types Pressure-seal gate / globe / check
Size 2–32 in
Pressure rating 150–2,500 LB
Body materials Carbon steel, stainless steel, alloy steel
Service options NACE
Trim / ends Per API 600 · RF, RTJ, BW
Operation Handwheel, gear, motor, pneumatic Start an inquiry ↗ 05 Pressure-balanced isolation
Standards & service API 599 · API 6D
Plug Valve Pressure-balanced, lubricated plug-valve design with grease injection and anti-static protection.
Select handwheel, gear or actuator operation to suit the required duty.
Technical specifications
Design standards API 599 · API 6D
Size 2–36 in
Pressure rating 150–2,500 LB
Body materials Carbon steel, stainless steel, etc.
Design features Pressure-balanced · lubricated · anti-static
Operation Handwheel, gear, actuator Start an inquiry ↗ 06 Compact flow control
Standards & service Process & utility service
Butterfly Valve Concentric and eccentric designs with a choice of body, seat, trim, connection and actuation options.
Design standard, seat, body material and actuation are selected around the line class and duty.
Technical specifications
Concentric range 2–86 in · 125–150 LB
Eccentric range 2–24 in · 150–600 LB
Body materials Carbon steel, stainless steel, ductile iron, bronze
Seats / trim Viton, EPDM, NBR, PTFE · 13Cr, stainless, bronze
Connections Wafer, lug, flange
Operation Handwheel, gear, motor, pneumatic Start an inquiry ↗ 07 Low-temperature service
Standards & service Cryogenic service
Cryogenic Valve Floating and trunnion-mounted ball valves with stainless-steel or carbon-steel bodies for cryogenic service.
Select pressure class, material and connections for the specified low-temperature duty.
Technical specifications
Floating design 2- or 3-piece side entry · ½–8 in
Trunnion design 2- or 3-piece side / top entry · 2–36 in
Pressure rating 150–1,500 LB (by design)
Body material Stainless steel, carbon steel
End connections RF, RTJ, BW; NPT / SW options for floating designs
Operation Handwheel, gear, motor, pneumatic Start an inquiry ↗ 08 Accurate process response
Standards & service Process control service
Control Valves Globe, cage-guided, angle and segmental control valves selected for precise control across liquid, gas and steam service.
Sizing, trim, characteristic and positioner are selected around the control loop and process conditions.
Technical specifications
Design Straight-through, cast globe valve
Size ¾–18 in
Pressure rating Class 125–600
End connections RF, RTJ
Body materials WCB, WC6, LCB, CF8, CF8M, CF3M
Service options NACE
Configurations Single-seated globe, cage-guided, angle control, V-notch segmental Start an inquiry ↗ 09 Pressure protection
Standards & service Pressure protection
Safety Valves Spring-loaded safety and relief valves configured to protect vessels, lines and equipment from overpressure.
Set pressure, relieving capacity, materials and certification are selected for the protected equipment and service.
Technical specifications
Design Spring fall lift safety valve
Design standards API RP 250 · ISO 4126
Size ½–12 in
Pressure rating Class 150–900
End connections RF, RTJ
Body materials WCB, WC6, CF8, CF8M, CF3M, Monel, Hastelloy C
Service options NACE
Configurations Spring-loaded, safety relief, pilot-operated, thermal relief Start an inquiry ↗ 10 Water & utility systems
Standards & service Water & utility systems
Ductile Iron Valves Resilient-seat gate, check, butterfly, air-release and strainer products for water, utility and auxiliary process systems.
Valve pattern, coating and end connection are selected for the applicable waterworks or utility specification.
Technical specifications
Design standards DIN 3352 · DIN EN 593
Size 2–86 in (butterfly valves)
Pressure rating PN 6, PN 10, PN 16, PN 25, PN 40
End connections RF, FF, wafer, lug
Body materials Ductile iron GJS 400-15, WCB, bronze B62, stainless steel
Configurations Resilient-seat gate, check, butterfly, air-release valves and strainers Start an inquiry ↗ API 6D product scope
Pipeline valve families The API 6D range covers several isolation and non-return designs. Final configuration depends on the service and project specification.
Valve family Configurations and selection focus Ball valves Floating, trunnion-mounted, fully welded and double-block-and-bleed designs in cast or forged construction. Pipeline gate valves Through-conduit gate configurations selected to the pipeline pressure, material and end-connection requirements. Plug valves Pressure-balanced plug configurations selected around the operating conditions and project specification. Axial-flow valves Axial-flow configurations selected around pipeline pressure, material class and end connection. Check valves Swing, axial-flow, dual-plate, single-plate and tilting-disc checks for low pressure drop and non-slam duty.
Ball valve sizes, classes and options + Configuration guide
Ball valve ranges by construction The 1/2-56 in and Class 150-2500 figures describe the ball-valve portfolio. The available range depends on valve design and body construction.
Configuration Size Pressure class Construction Floating / cast steel 1/2-8 in Class 150 and 300 One- or two-piece body Floating / forged steel 1/2-2 in Class 800 or Class 150-2500 Two- or three-piece body Trunnion-mounted 2-56 in Class 150-2500 Cast or forged, side-entry, top-entry or fully welded; cast to 48 in Double block and bleed 1/2-10 in Class 150-2500 Floating or trunnion construction; API 6D / EEMUA 182 scope
Selection details Body & trim Ball-valve bodies in carbon, stainless or alloy steel, including A105, F11, F22 and F5 options, with A105+ENP, 13Cr, F304 or F316 trim. NACE service options are available.
End connections RF, RTJ, BW, SW and NPT options, depending on the selected body configuration.
Operation Lever, gear, electric motor, pneumatic, gas-over-oil or hydraulic actuation, as specified for the project.
DBB & safety options DBB combines two isolation valves and a relief valve. Listed design options include a blowout-proof stem, fire-safe construction, anti-static protection, ISO 5211 mounting, cavity-pressure relief and double-piston-effect seats.
