API · ASME · DIN · EN standard industrial valves
Eccentric Plug Valves
Eccentric plug valves swing a rounded plug into an offset seat, camming it firmly against the face only in the closed position — so the seat wipes rather than scrapes on every stroke and keeps sealing through grit-laden, fibrous or scaling water and wastewater duty where a straight-lift plug would chew its seat. The range covers a cast-iron RF-flanged execution with an NBR or EPDM seat, in sizes DN15 to DN400 (1/2 to 16 inch) rated PN10 to PN16 and Class 150, worked manually, pneumatically or electrically. Bodies and bonnets come in A126 B, GG25, FC20, A536, A395, GGG40 or GGG50 grades with the same spread on the plug, graphite or PTFE packing, and a construction set that includes short, regular or venturi port patterns, a bolted bonnet with spiral-wound gasket, anti-static design, blow-out-proof stem and soft seating. Service is water, waste water and sewage at -29 to 120 °C. Selection turns on seat elastomer versus the media, the RF flange class, and the actuation the pit or plant runs.
Part of the Plug Valves family
Last updated: 2026-11
Family specifications
| product configuration | Cast Iron RF Type Eccentric Plug Valve with NBR/EPDM Seat |
|---|---|
| size range | DN15 to DN400, 1/2″ to 16″ |
| pressure class | PN10 to PN16, Class 150 |
| end connections | RF |
| operation | Manual, Pneumatic Actuator, Electric Actuator |
| construction features | Regular Port, Short Regular or Venturi Pattern, Bolted Bonnet with Spiral-Wound Gasket, Anti-static Design, Blow-out proof stem, Soft Seated |
| body materials | A126 B, GG25, FC20, A536, A395, GGG40, GGG50 |
| plug materials | A126 B, GG25, FC20, A536, A395, GGG40, GGG50 |
| seat materials | NBR, EPDM |
| packing materials | Graphite, PTFE |
| service media | Water, Waste Water, Sewage |
| temperature range | -29 to 120 °C |
| temperature range | -29 to 120 C |
| wP design standard | API 599, API 6D |
| wP size range | 1/2-30 Inch, DN15-DN750 |
| wP pressure class | Class 150-2500 LB, PN20-PN420 |
| wP body materials | ASTM A216 WCB, ASTM A217 WC6, ASTM A217 WC9, ASTM A350 LCB, ASTM A351 CF8, ASTM A351 CF8M, ASTM A351 CF3, ASTM A351 CF3M |
| wP structure length | ASME B16.10 |
| wP temperature range | –40 to +425 ℃ |
| wP end connections | ASME B16.5 |
| wP test standard | API 598, API 6D |
| wP actuation | Manual, Turbine, Electric, Pneumatic |
| ksP design standard | API 6D, API 599 |
| ksP nominal diameter | NPS 2-36 Inch (DN50-DN900) |
| ksP pressure class | Class 150-900 LB (PN20-PN150) |
| ksP materials | Ductile Iron, Carbon Steel, Stainless Steel, Aluminum Bronze, Duplex Steel |
| ksP face to face | ASME B16.10 |
| ksP end connections | RF, RTJ |
| ksP test standard | API 598, ISO 5208 |
| ksP temperature range | -29°C to +180°C |
| ksP service media | Water, steam, oil, gas |
| ksP operation | Lever, Gearbox, Electric, Pneumatic, Hydraulic |
| ksP seat construction | heat vulcanization molding process, alloy-surfaced valve seat |
| ksP flow characteristic | suitable linear regulation characteristic |
| mP body materials | ASTM A536 65-45-12 ductile iron, ASTM A126 CL B cast iron |
| mP small body ends | Threaded connection available on 1/2"-2" sizes, Flanged connection available on 2" size, ANSI B16.1 Class 125 |
| mP large body ends | flanged, grooved or mechanical joint ends, ANSI B16.1 Class 125 or 250, AWWA C-606, AWWA C111 |
| mP seat materials | corrosion and abrasion resistant epoxy, 1/8" thick welded 99% nickel seat |
| mP plug design | integral trunnions, totally encapsulated with an elastomer, PTFE thrust washers |
| mP large body size range | 2-1/2" – 48", 54" and larger |
| mP small body size range | 1/2" – 2" |
| product execution | Cast iron body, RF flanged ends, NBR/EPDM seated eccentric plug valve |
| connection end | RF (raised face flanged) |
| operation options | Manual, pneumatic actuator, electric actuator |
| pattern options | Short, regular or venturi pattern |
| medium | Water, waste water and sewage |
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 sizes and pressure ratings are available for eccentric plug valves?
The published size range is DN15 to DN400, 1/2″ to 16″, and the published pressure ratings are PN10 to PN16, Class 150. Availability of a specific size and rating is confirmed at quotation.
What materials are eccentric plug valves available in?
The published specification lists body materials: A126 B, GG25, FC20, A536, A395, GGG40, GGG50. Material availability for a specific size and rating is confirmed at quotation.
What working temperature range do eccentric plug valves cover?
The published working temperature range is -29 to 120 °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 eccentric plug valves support?
The published specification lists RF as the available end connections. The connection for a specific size is confirmed at quotation.
What should a quotation inquiry for eccentric 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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