API · ASME · DIN · EN standard industrial valves
Top Entry Ball Valves
Top-entry ball valves are serviced through the top cover, so seats, seals and the ball can be inspected or replaced with the valve left in the line — the maintenance argument for inline-inspectable isolation on process and pipeline duty. The series runs DN50 to DN700 at PN16 to PN250 and Class 150 to Class 2500, with WCB/LCB cast or CF8/CF8M stainless bodies, PTFE or RTFE seats, RF, RTJ and butt-weld ends, and fire-safe design to API 607 and API 6FA. Design standards listed span API 6D and API 608 together with MSS SP-72, ASME B16.34 and ISO 17292; testing covers API 598, API 6D, EN 12266 and ISO 5208. Handwheel, gear, electric and pneumatic operation all appear in the range.
Part of the Ball Valves family
Last updated: 2026-11
Family specifications
| size range | DN50 to DN700 |
|---|---|
| pressure class | PN16 to PN250, Class 150 to Class 2500 |
| pressure class | PN16 to PN250, Class150 to Class2500 |
| body materials | WCB, LCB, CF8, CF8M, CF3, CF3M |
| seat materials | PTFE, RTFE |
| ball materials | A105, SS304, SS316, SS304L, SS316L, F6A, F51, F53, F22 |
| stem materials | SS304, SS316 |
| end connections | RF, RTJ, BW |
| operation | Handwheel, Gear operated, Electric actuated, Pneumatic actuated |
| temperature range | -196°C to 570°C |
| design standards | API 6D, API 608, ASME B16.34, MSS SP-72, BS5351, ISO 17292, EN 13709 |
| testing standards | API 598, API 6D, DIN 3230, EN 12266, ISO 5208 |
| fire safe design | API 607, API 6FA |
| tva design standards | API 6D (top-entry design) |
| tva api608 compliance | Eccentric half ball variant designed to API 608 and API 6D, DN900 (36 inch), PN16, A216 WCB |
| tva body forged a105n | ASTM A105N forged carbon steel bodies |
| tva body wcb | ASTM A216 WCB carbon steel bodies (multiple SKUs) |
| tva body lcc | ASTM A352 LCC, 24 inch (DN600), Class 900 LB (PN150), RTJ ends |
| tva body cf8m cryogenic | Cryogenic top-entry variant in ASTM A351 CF8M, 14 inch (DN350), Class 300 LB (PN50), RF ends |
| tva size range | DN300 (12 inch) to DN700 (28 inch) across collected SKUs |
| tva pressure class | Class 150 (CL150) to Class 1500 LB (PN250) across collected SKUs |
| tva operation | Gearbox operated or pneumatic actuated across SKUs |
| tva end connections | RF flanged, butt-weld (BW) and RTJ ends across SKUs |
| tva bore options | Full bore and reduced bore (e.g. 10 x 8 inch) configurations |
| tva structure options | One-piece body; DBB function on selected SKUs |
| tvb size range | 10 to 24 inch across listed SKUs |
| tvb pressure class | Class 600 to 1500 LB across listed SKUs |
| tvb body materials | ASTM A216 WCB, ASTM A351 CF8M across listed SKUs |
| tvb design standards | API 6D |
| tvb end connections | RF flanged ends across listed SKUs |
| tvc size range | 2 to 36 inch (trunnion series); DN50 to DN900, PN16 to PN420 |
| tvc floating size range | 1/2 to 8 inch (DN15 to DN200), PN16 to PN420 (floating series) |
| tvc pressure class | Class 150 to 2500 LB |
| tvc design standards | API 6D, ASME B16.34, DIN 3357, BS 5351, EN 13709 (floating series) |
| tvc trunnion standards | API 6A, API 6D, ASME B16.34, ISO 17292 (trunnion series), soft/metal/composite seating |
| tvc cast design features | Anti-static design; full and reduced bore (cast steel series); API 6D, ISO 14313, ASME B16.34 |
| tvc forged trunnion | Forged steel trunnion series: ASME B16.34, API 6D, EN 13709, BS 5351; trunnion type with Double Block and Bleed (DBB) |
| tvc reduced bore rtf | Reduced bore 10 x 8 inch (DN250 x DN200), Class 1500 LB (PN250), RTJ end |
| packing | Graphite |
| gasket | PTFE |
| end to end | ANSI B 16.5, ASME B16.47, EN1092, DIN2543, AS2129 |
Ordering & documentation
Documents
Ask for the documentation set with the inquiry — typical items (material certificates, test reports to the listed inspection standard, dimensional drawings) are confirmed and supplied with the quotation.
Quotation
Send the medium, temperature, pressure, size and connection for a quotation-ready inquiry. Lead time, MOQ and price are confirmed at quotation, together with the documents to be supplied with the order.
Sample & supply
Supply terms, order quantities and lead time are agreed per order — state the destination country and required schedule with the inquiry.
Storage & shipping
Store valves with seats and seals protected from UV, ozone and deformation, and keep end-face protectors on until installation; storage limits and shipping arrangements for the selected materials are confirmed at quotation.
Frequently asked questions
What standards govern the design and testing of top entry ball valves?
The published specification for this family lists API 6D, API 608, ASME B16.34, MSS SP-72, BS5351, ISO 17292, EN 13709 as the design standards. Testing follows API 598, API 6D, DIN 3230, EN 12266, ISO 5208.
What sizes and pressure ratings are available for top entry ball valves?
The published size range is DN50 to DN700, and the published pressure ratings are PN16 to PN250, Class 150 to Class 2500. Availability of a specific size and rating is confirmed at quotation.
What materials are top entry ball valves available in?
The published specification lists body materials: WCB, LCB, CF8, CF8M, CF3, CF3M. Material availability for a specific size and rating is confirmed at quotation.
What working temperature range do top entry ball valves cover?
The published working temperature range is -196°C to 570°C. For a medium at the edge of the range, confirm the suitability of the selected seat and body materials at quotation.
What end connections do top entry ball valves support?
The published specification lists RF, RTJ, BW as the available end connections. The connection for a specific size is confirmed at quotation.
What should a quotation inquiry for top entry ball valves include?
The governing standard and class, nominal size, body and seat materials, the service medium with temperature, and the destination — anything missing is confirmed during quotation.
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