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Rotary Plug Control Valve Type S33

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Rotary Plug Control Valve Type S33

Details

Rotary Plug Control Valves S33 represent the design of valves, where change in flow ratio is achieved through eccentrically set rotary plug. Such structures are particularly useful for control of flow under heavy-duty conditions, with high probability of cavitation and erosion. High rangeability (200:1) and wide range of material and design variants make them ideal for application in many branches of industry, such as power generation, metallurgy, chemical and petroleum industry, food industry, paper industry, etc.

 

  • One-piece valve body (cast with bonnet), no static or dynamic sealing except shaft sealing chamber, no “detachment effect” between plug and seat.
  • Ability to change Kvs without changing plug or seat.
  • Easy replacement of rotary, symmetrical plug.
  • Elongated bonnet allows application of double sealing for shaft, meeting “low emission” standards equal to TA-LUFT conditions.
  • The same Kvs coefficients for “hard” and “soft” seats.
  • Leakage class less than 0.01%Kvs for “hard” seats (metal-metal).
  • Same flow direction for “hard” and “soft” seats.
  • Valve-actuator connection accessible from outside, which allows pivoting actuator to valve axis by 90° increments.
  • Special executions: with heat jacket, erosion-proof, for crystallizable medium.

 

 

Technical Table
Nominal sizes DN25; 40; 50; 80; 100; 150; 200; 250; 300
(NPS 1″ up to 12″)
Nominal pressure PN 10, 16, 25, 40, 63 ; As per EN1092-1 & EN1092-2
CL150; CL300 ; As per ANSI/ASME B16.5, B16.34 & MSS-SP44
Flow ratio 3 … 2160 m³/h
Control characteristics linear, equal percentage
Rangeability 50:1
Leakage class IV class EN 60534-4 ; VI class EN 60534-4
class from B to G  EN 12266-1
Media temperature  – 40 … + 450°C
Body Materials & Bonnet carbon steel  GP 240 GH (1.0619), ASTM A216 Gr.WCB
carbon steel for low temp. G20Mn5 (1.6220), ASTM A352 Gr.LCB
stainless steel GX5CrNiMo 19-11-2 (1.4408), ASTM A351 Gr.CF8M
Item Component Materials
1. Body GP240GH; (1.0619) WCB G20Mn5 ;

(1.6220)

 GX5CrNiMo 19-11-2; (1.4408) CF8M
2. Bridge
3. Plug X6CrNiMoTi 17-12-2 (1.4571); X6CrNiMoTi 17-12-2+ stellite

X2CrNiMoTi 17-12-2 (1.4404); X2CrNiMoTi 17-12-2+stellite
4a. Metallic seat X6CrNiMoTi 17-12-2 (1.4571); X6CrNiMoTi 17-12-2+stellite

X2CrNiMoTi 17-12-2 (1.4404); X2CrNiMoTi 17-12-2+stellite
4b. Soft seat X6CrNiMoTi 17-12-2+PTFE;

X2CrNiMoTi 17-12-2+PTFE
5. Screw plug  

X6CrNiMoTi 17-12-2 (1.4571)
6. Shaft
7. Guiding sleeve X6CrNiMoTi 17-12-2 (1.4571)+CrN X6CrNiMoTi 17-12-2+PTFE
8. Shaft sealing
9. Packing kit PTFE-V; PTFE+graphite; GRAPHITE
10a ,10b Sealing ring FKM
11. Sweep ring VMQ
12. Disk spring 12R10 (SANDVIK)
13. Spacer sleeve  

X6CrNiMoTi 17-12-2 (1.4571)
14. Lubricating sleeve
15. Follower sleeve
16. Pressing lever X6CrNiMoTi 17-12-2 (1.4571) ;GX5CrNiMo 19-11-2 (1.4408)
17. Cylindrical pin  

X6CrNiMoTi 17-12-2 (1.4571)
18. Conical pin
19. Stud bolt 8.8 A4-70
20 Nut 8 A4-70
Rotary Plug Control Valve Type S33
Rotary Plug Control Valve Type S33