API 6D Ball Valve

What are Applicable Design Standards?

API American Petroleum Institute

• 6D Specification for Pipeline Valves
• 598 Valve Inspection and Test
• 607 Fire test for Soft Seated Quarter Turn Valves
• 608 Metal Ball Valves

ASME American Society of Mechanic Engineers

• B16.5 Steel Pipe Flanges and Flanged Fittings
• B16.10 Face to Face and End to End Dimensions of Ferrous Valves
• B16.34 Steel Valves—Flanged and Butt Welding Ends
• N31.4 Liquid Petroleum Transportation Piping Systems
• B31.8 Gas Transmission and Distribution Piping Systems

ISO International Organization for Standardization

• ISO 9001-2000 Quality Systems for Design/Development, Production, Installation, Servicing
• ISO 5211 Top works for Mounting Dimensions

BS British Standard

• BS 5351 Steel Ball Valves for the Petroleum, Petrochemical, and Allied Industries

MSS Manufacturers Standardization Society

• SP 25 Standard Marking System for Valves, Fittings, Flanges and Unions
• SP 45 Bypass and Drain Connection Standard

NACE National Association of Corrosion Engineers

• MR0175 Sulfide Stress Cracking Resistant Metallic Materials for Oilfield Equipment

What is API 6D Ball Valve?

API 6D ball valves are designed and manufactured to provide maximum service life and dependability. All ball valves are full port or reduced port and meet the design requirements of API 6D. API 6D ball valves are available in a complete range of body/bonnet materials and trims. API 6D ball valves are available for the pressure ratings only: Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, and Class 2500.

Design and Manufacture	API 6D
Wall Thickness	API 6D
Face-to-Face Dimension	API 6D
Flange End Dimension	ANSI/ASME B16.5 (1” to 24”) ANSI/ASME B16.47 (26” & up)
Butt-Weld End Dimension	ANSI/ASME B16.25
Inspection & Testing	API 6D/API 598
Fire Safe Design	API 607/BS 6755
Material	Nace MR 0175

API 6D Ball Valve Face to Face Dimensions (RTJ Ends)

NPS (Inch)	DN (mm)	Class150	Class 300	Class 400	Class 600
2”	50	191	232	–	295
2-1/2”	65	203	257	–	333
3”	80	216	298	–	359
4”	100	241	321	410	435
6”	150	406	419	498	562
8”	200	470	518	600	664
10”	250	546	584	676	791
12”	300	622	664	765	841
14”	350	699	778	829	892
16”	400	854	905	994	854
18”	450	930	981	1095	930
20”	500	1010	1060	1200	1010
22”	550	1114	1153	1305	1114
24”	600	1165	1241	1407	1165
26”	650	1270	1321	1461	1270
28”	700	1372	1410	1562	1372
30”	750	1422	1537	1664	1422
32”	800	1553	1667	1794	1553
34”	850	1654	1794	1946	1654
36”	900	1756	1895	2099	1756

NPS (Inch)	DN (mm)	Class 900	Class1500	Class 2500
2”	50	371	371	454
2-1/2”	65	422	422	514
3”	80	384	473	584
4”	100	460	549	683
6”	150	613	711	927
8”	200	740	841	1038
10”	250	841	1000	1292
12”	300	968	1146	1445
14”	350	1038	1276	–
16”	400	1140	1407	–
18”	450	1232	1559	–
20”	500	1334	1686	–
22”	550	–	–	–
24”	600	1568	1972	–
26”	650	1673	–	–
28”	700	–	–	–
30”	750	1902	–	–
32”	800	–	–	–
34”	850	–	–	–
36”	900	2315	–	–

Types of API 6D Ball Valves

API 6D Floating Ball Valve

ZECO Valve offers 2”-8 6D cast floating ball valves built to meet the industry’s strictest specifications. Our products include ANSI Classes 150-1500, material grade WCB cast carbon steel

6D FLOATING BALL VALVES for application in pipeline and piping systems for the Petroleum and Oil & Gas Industry.

SIZE RANGE	2” –8″
PRESSURE RANGE	150 ANSI pressure class to 2500 ANSI pressure class
PORT SIZES	Two-piece full port design, Two-piece reduced port design
MATERIAL GRADES	WCB, WC6, WC9, A105N, LF2, F316, F51, F91
STANDARD SEAT MATERIAL	PTFE, RPTFE, DEVLON, PEEK, NYLON
PACKING AND GASKET MATERIAL	Graphite, PTFE
END CONFIGURATIONS	Raised Face, RTJ, SW, BW, FF
STANDARDS	Fire Safe, CE Certified, NACE Certified, API 608, API 6D

API 6D Trunnion Ball Valve

Trunnion design ball valves incorporate the use of upper and lower supports to retain the ball under pressure. API 6D trunnion ball valves have a secondary sealant injection system for stem seals and seats in the event of providing a temporary seal to an otherwise damaged area. The trunnion ball valve design using the upper and lower trunnion plate system essentially doubles the safety and reliability of a standard trunnion ball valve.

Trunnion plate system feature is standard on all API 6D trunnion ball valves from 2” and up (ANSI 600 through 2500). It permits the valve to be installed in either direction, since the trunnion prevents the ball from shifting — or worse, blowing out – under high-pressure applications.

Another important benefit of the trunnion plate system design is that it allows the ball to only rotate a quarter turn with no hysteresis thus more control and reliability under extreme applications.

API 6D trunnion ball valves use materials in accordance with NACE MR0175/ISO15156. In order to ensure compliance customers must provide application-specific operating conditions.

Features of API 6D Trunnion Ball Valve

• Valves designed according to API 6D
• All sizes available as full-or reduced bore
• Double block-bleed on request
• Fire safe to BS 6755, API 6FA, and API 607
• Valve seats as single or double piston type
• Elastomeric and thermoplastic sealing materials to suit the application
• Can be delivered with any type of actuator & accessories
• Secondary sealing by grease injection
• All sizes and classes available with metal-metal sealing
• Fully welded upon request
• Antistatic device and anti-blow-out stem
• Special executions for cryogenic or high temp service

Applications of API 6D Trunnion Ball Valve

These valves are suitable for demanding and critical applications in oil&gas, petrochemical, and chemical industries. With the wide range of special valve materials available, the valves find frequent use off-shore and in similar applications where physical and chemical resistance to both flow medium and environment is of utmost importance.

Valves can be engineered to suit any particular client requirement.