Description
The Eccentric Rotary Valve, also known as the rotary plug valve. The rotary plug valve features an integral body and bonnet design that provides streamlined and efficient flow control. The non-concentric rotation center design of this valve reduces seat abrasion which leads to longer service life. The eccentric plug valve provides precise control functions and performs best when shearing medium for optimal performance. The eccentric rotary control valve delivers improved efficiency together with extended longevity.
Parameters
- Trim features: eccentric structure
- Body type: straight—through type
- Bonnet type: standard integral type
- Flow characteristic: approximately equal percentag
- Shut-off class: ASME B16.104 V
- Pipe connection type: wafer type, flange type
- Applicable temperature range: -196℃ – 180℃
- Actuator type: pneumatic piston actuator electric actuator
- Size range: DN1″ -12″
- Pressure rating:150 – 60OLB PN1.0 – 6.4Mpa
Applications
Chemical fiber, electric power, metallurgy. Pharmacy, environmental protection
| 1 | Stem | 17-4PH Stainless Steel ASTM A564 Gr630 Optional: 316ss，inconel718/625，Monel |
| 2 | Packing | PTFE V-ring Optional: Graphite-high density/low density |
| 3 | Front bearing | 316SS Backed Ptfe，hastelloy C Backed Ptfe |
| 4 | Body | Carbon Steel A216 Gr WCB Or A105 Optional: ASTM A351 CF8M Or A182 F316 |
| 5 | Gland | Optional: 316ss，inconel718/625，Monel |
| 6 | Plug | Carbon Steel A216 Gr WCB Or A105+Surfacing SS Optional: 316ss,ASTM A351CF8M Or A182 F316 Monel,Alloy20,Aluminum Bronze, Hastelloy C |
| 7 | Seat | 17-4PH Stainless Steel ASTM A564Gr630 Optional: 316ss，inconel718/625，Monel |
| 8 | Limit part | 17-4PH Stainless Steel ASTM A564Gr630 |
| Size | Wafer L | Flange L | H1 | H2 | H3 | G |
| DN25 | 102 | 127 | 126 | 155 | 40 | G1/4 |
| DN40 | 114 | 165 | 132 | 155 | 45 | |
| DN50 | 124 | 178 | 136 | 155 | 49 | |
| DN80 | 165 | 203 | 192 | 190 | 70 | |
| DN100 | 194 | 229 | 195 | 199 | 108 | |
| DN150 | 229 | 267 | 283 | 255 | 150 | |
| DN200 | 243 | 292 | 311 | 296 | 180 | |
| DN250 | 297 | 330 | 372 | 358 | 220 | G1/2 |
| DN300 | 338 | 356 | 392 | 394 | 260 |
FAQs
What is an eccentric rotary plug valve?
An eccentric rotary plug valve is a specialized type of rotary control valve designed for high-performance flow regulation in various demanding industrial applications. This valve features an eccentrically mounted plug, which rotates off-center from the valve body to achieve a tight shut-off and precise control over fluid flow. The eccentric motion reduces wear and tear on the sealing surfaces, enhancing durability and extending the valve’s service life even under severe operating conditions.
What is the application of eccentric plug valves?
Eccentric plug valves serve a primary function in operations that manage granular or abrasive materials. The valve operates in chemical processing plants as well as power generation facilities and mining operations and wastewater treatment plants and numerous other industrial settings. The rotary plug valve design enables exact flow rate control through its mechanism which protects the valve from damage and clogging.
The offset disc shape inside the valve body distinguishes eccentric plug valves from other valve types. The off-center disc position creates an eccentric motion which produces a self-cleaning effect on the seating surface. The valves maintain their tight shut-off capability through continuous operation in harsh conditions without any leakage.
What is the difference between eccentric plug valves and ball valve?
The main distinction between eccentric plug valves and ball valves exists in their construction together with their operational characteristics and industrial usage patterns. The operation of eccentric plug valves depends on an off-center positioned plug which controls fluid flow. The design of this valve reduces the contact between the plug and seat during operation which leads to reduced wear and longer valve lifespan.
Ball valves operate by using a spherical ball with a central opening that turns to either open or close the valve. Ball valves achieve tight shut-off performance while providing reliable sealing capabilities because of their simple operation mechanism which makes them suitable for applications requiring fast on-off control.
What industries commonly use eccentric plug valves?
Eccentric plug valves serve multiple industries which include water and wastewater treatment as well as chemical processing and pulp and paper and mining. The valves serve as a preferred option for demanding applications because they can handle abrasive materials that standard valves would otherwise fail to operate with.
What are the advantages of using eccentric plug valves in industrial applications?
Eccentric plug valves provide two main benefits through their ability to withstand wear and need minimal upkeep. The special design structure of the valve extends its operational life because it minimizes wear on the plug and seat components. The valves provide strong shut-off performance while operating under various pressure and temperature conditions which makes them appropriate for both isolation and control functions.
