API · ASME · DIN · EN standard industrial valves
Lubricated Plug Valves
Lubricated plug valves keep a waxed seal between plug and body: injected grease compounds follow the sealing faces, cutting operating torque and letting a tapered plug wipe clean through gritty or sticky line media. The range covers a lubricated-type execution in sizes DN15 to DN400 (1/2 to 16 inch) rated PN10 to PN420 and Class 150 to 2500, ending in RF, NPT, butt-weld or socket-weld connections and worked by manual, pneumatic or electric actuation. Bodies and bonnets come in the WCB/A105, LCB/LF2, WC6/F22 and stainless CF-series pairings, with the plug in A105+ENP or stainless grades and a PTFE or metal seat under graphite or PTFE packing. The line is built to API 6D, API 599 and MSS SP-25 and tested to API 598. Selection turns on the media-versus-trim pairing across the listed temperature bands, the pressure class, and the end connection the piping carries — with the sealant system sized for the service interval.
Part of the Plug Valves family
Last updated: 2026-11
Family specifications
| size range | DN15 to DN400, 1/2" to 16" |
|---|---|
| pressure class | PN10 to PN420, Class 150 to Class 2500 |
| pressure class | PN10 to PN420, CLASS150 to 2500 |
| end connections | RF, NPT, BW, SW |
| design standards | API 6D, API 599, API 598, MSS SP-25 |
| operation | Manual, Pneumatic Actuator, Electric Actuator |
| body materials | WCB/A105, LCB/LF2, WC6/F22, CF8/F304, CF8M/F316, CF3/F304L, CF3M/F316L |
| plug materials | A105+ENP, SS304, F22, SS316, SS304L, SS316L |
| seat materials | PTFE, Metal |
| packing materials | Graphite, PTFE |
| gasket materials | SS304+Graphite |
| bolting materials | B7/2H, L7/4, B16/4, B8/8, B8M/8M |
| service media | W.O.G, HNO3, CH3OOH |
| temperature range | -29 to 425 °C (WCB trim), -46 to 340 °C (LCB trim), -196 to 427 °C (stainless trim) |
| temperature range | -29-425 °C, -46-340 °C, -46-340 °C, -196 -427 °C, -196-427 °C, -196~-427 °C, -196-427 °C |
| wLv design standards | API 599, API 6D |
| wLv size range | 1/2-42 Inch, DN15-DN1050 |
| wLv pressure class | Class 150-2500 LB, PN20-PN420 |
| wLv body materials | ASTM A105, ASTM A350 LF2, ASTM A182 F304, F316, F304L, F316L, F51, ASTM A216 WCB, WCC, ASTM A351 CF8, CF8M, CF3, CF3M, ASTM A890 4A |
| wLv end connections | RF, RTJ, BW |
| wLv testing standards | API 598 |
| wLv operation | Lever, Gear box, Electric, Pneumatic, hydraulic device etc |
| wLv temperature range | -29 - +180°C |
| kLv product name | Pressure Balanced Lubricated Plug Valve |
| kLv structure | Inverted pressure balance plug valve |
| kLv size range | NPS 1/2-16 Inch (DN15-DN400) |
| kLv pressure class | Class 150-1500 LB (PN20-PN260) |
| kLv body materials | ASTM A216 WCB, WCC, A217 WC6, WC9, C5, A352 LCB, LCC, A351 CF8, CF8M, CF3M, CF8C, CN3MN, CN7M, A890 4A(CD3MN), 5A(CE3MN), 6A(CD3MWCuN), ASTM B148 C95800, C95500 |
| kLv design standards | API 6D, API 599 |
| kLv face to face | ASME B16.10 |
| kLv end connections | RF, RTJ, BW |
| kLv testing standards | API 598, ISO 5208 |
| kLv temperature range | -46°C to +300°C |
| kLv service media | Water, steam, oil, gas, etc. |
| kLv operation | Lever, worm gear, electric, pneumatic |
| kLv applications | Petrochemical, chemical, natural gas, LPG, gas, HVAC, food, and pharmaceuticals |
| kLv bore patterns | Venturi, Regular, Short, Standard |
| kLv features | Optional bore pattern: Venturi, Regular, Short, Standard, Metal to metal seated design, Injection grease sealed design (for stem and seats), Fire safe design |
| lLv design standards | API 599 |
| lLv body materials | Carbon steel, Stainless steel, duplex stainless steel, Alloy steel, Nickel alloy |
| lLv pressure class | Class 150 LB - 1500 LB, PN20-PN250 |
| lLv size range | NPS 2 Inch - 12 Inch, DN50-DN300 |
| lLv end connections | RF, RTJ, BW |
| lLv operation | Lever, Gear box, Electric, Pneumatic, hydraulic device, Pneumatic-hydraulic device |
| lLv features | Top entry design, convenient for on-line maintenance, Sealing with adjustable design, Grease sealing design, with good sealing performance, Bidirectional seals, no limitation on the flow direction |
| connection end | RF, NPT, BW, SW |
| standard | API 6D, API 599, API 598, MSS SP-25 |
| operation way | Manual, Pneumatic Actuator, Electric Actuator |
| packing | Graphite, PTFE |
| gasket | SS304+Graphite, SS304+Graphite |
| bolts nuts | B7/2H, L7/4, B16/4, B8/8, B8M/8M, B8/8, B8M/8M |
| suitable medium | W.O.G etc., HNO3, CH3OOH etc. |
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 lubricated plug valves?
The published specification for this family lists API 6D, API 599, API 598, MSS SP-25 as the design standards.
What sizes and pressure ratings are available for lubricated plug valves?
The published size range is DN15 to DN400, 1/2" to 16", and the published pressure ratings are PN10 to PN420, Class 150 to Class 2500. Availability of a specific size and rating is confirmed at quotation.
What materials are lubricated plug valves available in?
The published specification lists body materials: WCB/A105, LCB/LF2, WC6/F22, CF8/F304, CF8M/F316, CF3/F304L, CF3M/F316L. Material availability for a specific size and rating is confirmed at quotation.
What working temperature range do lubricated plug valves cover?
The published working temperature range is -29 to 425 °C (WCB trim), -46 to 340 °C (LCB trim), -196 to 427 °C (stainless trim). 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 lubricated plug valves support?
The published specification lists RF, NPT, BW, SW as the available end connections. The connection for a specific size is confirmed at quotation.
What should a quotation inquiry for lubricated 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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