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Pressure Operated Valves

Pressure Operated Valves. Training. Overview of the introduction. Design Working principle, Kv Operator Design, construction advantage Pilot pressure, pilot orifice Stuffing box 290/390 range Body type, operator size, DN New body & options, accessories. Design. 1. 2. 1. 2.

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Pressure Operated Valves

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  1. PressureOperated Valves Training

  2. Overview of the introduction • Design • Working principle, Kv • Operator • Design, construction advantage • Pilot pressure, pilot orifice • Stuffing box • 290/390 range • Body type, operator size, DN • New body & options, accessories 2 - File Name - 29/11/2014

  3. Design

  4. 1 2 1 2 Working principle 1 2 4 - File Name - 29/11/2014

  5. Increased KV value DN 25 Kv (l/min) = 200 Kv (m3/h) = 12 DN 25 Kv (l/min) = 275 Kv (m3/h) = 16,5 5 - File Name - 29/11/2014

  6. Differential Pressure FOR WATER FLOW:10m3/h DN 25 KV (m3/h) = 16,5 DN 25 KV (m3/h) = 30 DN 25 KV (m3/h) = 22 D.P(lost pressure): 0,36 bar 0,11 bar 0,21 bar 6 - File Name - 29/11/2014

  7. 2 1 1 2 Anti-water Hammer by Design 1 > 100 bar 2 10 bar 7 - File Name - 29/11/2014

  8. E290 Ball valve Diaphragm valve Life Time On Water 30°C – 10 Bar DN25 3M 2,0 1,5 1,0 0,5 0 Test in our laboratory 8 - File Name - 29/11/2014

  9. Angle Seat Valve : To Mount & Forget 9 - File Name - 29/11/2014

  10. Operators

  11. Operators • Polyamide head reinforcedwith glass fiber • Single pilot • 2/2 normally closed and normally opened • Ambient temperature range:-10°C to +60°C • Maxi pressure pilot: 10b • Diameter 32 mm: for diameter DN 10, 15, 20 • Diameter 50 mm: for diameter DN 15, 20, 25 • Diameter 63 mm: for diameter DN 15 up to 50 • Diameter 90 mm: for diameter DN 25 up to 65 • Diameter 125 mm: for diameter DN 25 up to 65 11 - File Name - 29/11/2014

  12. F Operators Polyamide head reinforcedwith glass fiber: - Good Mechanical characteristics- U.V resistant- Cleaning agent resistantAsco Conception:- No Maintenance needs- Operator adjustable at 360° 12 - File Name - 29/11/2014

  13. F F Operators : competition Other Competitor’s Conception!!! Asco Safety operator Standard threading Strong Artillery threading 13 - File Name - 29/11/2014

  14. Operator : high life time Other Competitor’s Conception!!! Ascojoucomatic • The internal guiding is cylindrical and concentric • The internal surface is glazing equal stress on the lip seal, high life time

  15. 1 2 1 2 1 2 Low air consumption Operator 63 for 290 DN25: opening:0,2 seconds Operator’s volume at complete stroke:9.4cm3 Low volume 15 - File Name - 29/11/2014

  16. Competition Asco Small orificefor supplyand exhaust Largest pilot orifice sizes Burkert Closing response time With pilot DN:3 AIR 6B :321ms Asco Closing response time With pilot DN:3 AIR 6B : 125ms

  17. N.C N.O N.C N.C Pilot pressure

  18. N.O Selection of the minimum pilot pressure Example with N.O valve operator 63 mm G2 DN50 G1 1/2 DN40 10 b Min pilotpressure G1 1/4 DN32 8 b G1 DN25 6 b G3/4 DN20 4 b G1/2 DN15 2 b 4 b 8 b 12 b 16 b D.P

  19. The stuffing box 19 - File Name - 29/11/2014

  20. The Main Parts Of The Stuffing Box • 2 oversizedPTFE bearings • Resistance againstbackpressure • Same print on the disc seal = better tightness • Stainless steelmonoblock • Burnished stem • High resistance • Anti-waterhammerdesign Spring loaded Chevron seals Wiper seal PTFEStatic seal 20 - File Name - 29/11/2014

  21. x Schubert & Salzer Seal PTFE or FPM wiper seal in FPM ASCOJOUCOMATIC Competitors comparison x > cou r se 21 - File Name - 29/11/2014

  22. Stuffing box 4 2 3 • Mono block bearing (PTFE) • fine grained = low friction • long bearing = no stress on the stem • ►improved chevrons life time 1 Wiper seal (FPM) - Stem cleaning and better tightness 23 - File Name - 29/11/2014

  23. Stuffing box 4 3 • Cavities = advantages • collect dirts • avoid these parts to stick on the stem and damage the chevrons • grease tank • absorb PTFE dilatation due to temperature 1

  24. 290 - 390 Range

  25. 290-390 range : overview

  26. 290-390 range : overview 32 - File Name - 29/11/2014

  27. Various operator size Operator 32 mm Operator 50 mm 54.5 mm 83.5 mm G1/2 G1/2 99 mm 142 mm 34 - File Name - 29/11/2014

  28. Competition – dimension G1/2 Bürkert, series 2000 ultra compact Ø 40 mm Asco Ø 32 mm 117 mm 83.5 mm 65 mm 65 mm 99 mm 145 mm 35 - File Name - 29/11/2014

  29. Stainless steel version : parts material Operator springs Pilot port Stem Disc Stuffing box Internal parts Body Nut 36 - File Name - 29/11/2014

  30. 2/2 valve : 290 serie – Tapped body NC above disc* : for quick cycling or steam application

  31. 3/2 valve - 390 serie NPT & Rc* : up to 1” 41 - File Name - 29/11/2014

  32. Options Operators Bodies NET INOX TREATMENT ( perfect surface roughness ) Standard for: All 316L st-steel Series & Clamp connection series VACCUM APPLICATION (up to 1.33 10-3 mbar/ FPM disc) Possible to used with steam at 180°c OXYGEN (special grease and cleaning) PROFIL DISC Proportional flow Options 42 - File Name - 29/11/2014

  33. Vacuum application • Up to 1.33 X 10-3mbar(medium vaccum) • Standard seal in PTFEreinforced carbon is replacedby a FPM seal offeringa better softness. • To order: Use suffix VM • Example: E290A005 VM 44 - File Name - 29/11/2014

  34. Accessories Accessories Operators Bodies Function: 2 ports 3 ports 46 - File Name - 29/11/2014

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