API · ASME · DIN · EN standard industrial valves
Orbit Plug Valves
Orbit plug valves lift the plug off the seat before rotating it, so the sealing faces rub only through the last fraction of travel — the rolling-and-cambering motion that keeps a tight shut-off through cycling service, granular media and slurries where a conventional quarter-turn would grind grit across the seat. The range covers an execution in DN15 to DN350 rated Class 150 to 2500 and PN16 to PN420, built to API 599, API 6D, ASME B16.34 and BS 5353. Bodies and bonnets come in WCB, CF8, CF8M, CF3, CF3M, LCB or WC6, the plug in A105+ENP or stainless grades, seated in PTFE or PPL with PTFE/PPL seat rings under graphite, PTFE or PPL packing and an SS304+graphite gasket. Face-to-face follows ASME B16.10, API 6D, DIN 3202, EN 558-1, EN 12982 and ISO 5752; flanges per ANSI B16.5, ASME B16.47, EN 1092, DIN 2543–2547 and AS2129; screwed ends per ANSI B1.20.1, BS21 and JIS B020; inspection and test to API 598, API 6D, DIN 3230, EN 12266 and ISO 5208. Selection turns on cycling frequency, seat polymer versus media, and the end style.
Part of the Plug Valves family
Last updated: 2026-11
Family specifications
| body materials | WCB, CF8, CF8M, CF3, CF3M, LCB, WC6 |
|---|---|
| plug materials | A105+ENP, SS304, SS304L, SS316, SS316L |
| seat materials | PTFE, PPL |
| seat ring materials | PTFE, PPL |
| packing materials | Graphite, PTFE, PPL |
| gasket materials | SS304+Graphite |
| size range | DN15 to DN350 |
| pressure class | Class 150 to Class 2500, PN16 to PN420 |
| pressure class | Class150 to Class2500, PN16 to PN420 |
| design standards | API 599, API 6D, ASME B16.34, BS 5353 |
| face to face | ASME B16.10, API 6D, DIN3202, EN558-1, EN12982, ISO 5752 |
| flange standards | ANSI B16.5, ASME B16.47, EN1092, DIN2543 to DIN2547, AS2129 |
| screwed end dimension | ANSI B1.20.1, BS21, JIS B020 |
| testing standards | API 598, API 6D, DIN3230, EN12266, ISO 5208 |
| kOv product name | Twin Seal Orbit General Valve |
| kOv structure | Orbit Plug/General Valve |
| kOv design standards | API 6D, API 599 |
| kOv body materials | ASTM A216 WCB |
| kOv example size | 10 Inch, DN250 |
| kOv example pressure | Class 150 LB, PN20 |
| kOv example end connection | RF Flanged |
| kOv example operation | Handwheel |
| kOv size range | NPS 2-36 Inch (DN50-DN900) |
| kOv pressure class | Class 150-900 LB(PN20-PN150) |
| kOv material options | ASTM A216 WCB, WCC, A217 WC6, WC9, C5, A352 LCB, LCC, A351 CF8, CF8M, CF3M, CF8C |
| kOv face to face | ASME B16.10 |
| kOv end connections | RF, RTJ |
| kOv testing standards | API 598, ISO 5208 |
| kOv temperature range | -46°C to +300°C |
| kOv service media | Water, steam, oil, gas, etc. |
| kOv operation | Lever, Gearbox, Electric, Pneumatic, Hydraulic |
| kOv sealing design | sealing rings around the valve disc, with unique protection provided by wallow-tailed sinks and fixed sealing rings |
| vOv design standard | API 6D |
| vOv body materials | ASTM A216 WCB |
| vOv example size | 18 Inch |
| vOv example pressure | 300 LB |
| vOv example end connection | RF |
| vOv face to face | ASME B16.10 |
| vOv testing standards | API 598 |
| vOv example operation | Actuator |
| vOv size range | 1/2 - 20 Inch |
| vOv pressure class | Class 150 - 1500 LB (PN16 - PN160) |
| vOv temperature range | -29℃ - +300℃ |
| vOv service media | Oil, gas, water |
| cOv size range | NPS1/2"-24" / DN15-600mm |
| cOv main materials | Carbon steel, Stainless Steel, Aluminum Bronze, Duplex steel etc. |
| cOv temperature range | -29 ~ +100°C |
| cOv stem materials | Stainless Steel |
| cOv pressure class | I.0Mpa ~ 11.0Mpa 150LB ~ 600LB |
| cOv leakage level | Zero Leakage |
| cOv plug materials | Carbon Steel,Stainless steel,Duplex steel etc. |
| cOv flange standards | ASME B16.5, EN1092, GOST 33259, BS etc. |
| cOv seat materials | NBR |
| cOv port type | Full Port |
| cOv design standards | API599, API 6D, ASME B16.34 |
| cOv testing standards | API 598, EN12266-1, ISO 5208 |
| cOv face to face | API 16.10, EN558-1, API 599 |
| cOv operation | Lever, Worm Gear |
| packing | Graphite, PTFE, PPL |
| gasket | SS304+Graphite |
| flanged end | ANSI B 16.5, ASME B16.47, EN1092, DIN2543~DIN2547, AS2129 |
| end connections | ANSI B1.20.1, BS21, JIS BO20 |
| inspection testing | API598, API6D, DIN3230, EN12266, ISO 5208 |
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 orbit plug valves?
The published specification for this family lists API 599, API 6D, ASME B16.34, BS 5353 as the design standards. Testing follows API 598, API 6D, DIN3230, EN12266, ISO 5208.
What sizes and pressure ratings are available for orbit plug valves?
The published size range is DN15 to DN350, and the published pressure ratings are Class 150 to Class 2500, PN16 to PN420. Availability of a specific size and rating is confirmed at quotation.
What materials are orbit plug valves available in?
The published specification lists body materials: WCB, CF8, CF8M, CF3, CF3M, LCB, WC6. Material availability for a specific size and rating is confirmed at quotation.
What end connections do orbit plug valves support?
The published specification lists ANSI B1.20.1, BS21, JIS BO20 as the available end connections. The connection for a specific size is confirmed at quotation.
What should a quotation inquiry for orbit plug 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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