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Diaphragm Operated Control Valve, for Pressure Reducing Applications (PRV), PN10/16

Reduced bore, WRAS approved materials, AISI304 pipes and fittings

Diaphragm Operated Control Valve for water to max. 70° C

AVK series 859 diaphragm actuated pressure reducing control valves (PRV) automatically reduces a higher inlet pressure to a lower constant outlet pressure, regardless of flow demand or changes in inlet pressure.

A replaceable spring inside the pilot makes it possible to operate in different pressure ranges and still keep the high precision. Setting and adjustment on a control knob on the pilot.

Variant 859/000X-002
Connection: Flanged
Material: Ductile iron
DN: DN65 - DN300
PN: PN10/16

Features

  • Main control valve
    • Lifted seat, to avoid damage due to cavitation; High Kv value, at fully open position.
    • Geometry of regulating disc, provides high ratio of travel- Kv, resulting in optimal control performance.
    • Non symmetric axial position of rubber diaphragm, getting less stretch/stress, near closed position.
    • All, non coated internals, made of AISI316.
    • Body and bonnet of ductile iron with fusion bonded epoxy, 300micron, RAL 5017, according to WRAS-DVGW/W270/UBA.
    • All rubber components with multiple approvals (EN 681-1, KTW, W270, ACS, WRAS)
  • Pilot system
    • Modular and compact design, easy for application change.
    • Main components: Distribution blocker, filter and hydraulic control block.
      • Distribution block, AISI 316.
        • Connecting main control valve to pilot system.
        • Easy adjustment of regulating speed.
        • Control orifice.
      • Filter, AISI 316.
        • High capacity, long life, easy to flush, back flushing possible.
        • Mesh 100, high performance wire screen type.
      • Hydraulic control block, AISI 316.
        • Includes balanced pilot valve, providing more stable pressure set.
        • Can be set up for different applications, using specific: Single Function Modules (type SFM) or Multi Function Modules (type MFM).

Reference nos. and dimensions:

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Reference no. DN
mm		 Flange
drilling		 Press. Range
bar		 L
mm		 W1
mm		 W2
mm		 H3
mm		 Theoretical
weight/kg
859-0065-00-1240000 65 PN10/16 0.6 - 6 290 104 131 335 17
859-0065-00-1240001 65 PN10/16 5 - 11 290 104 131 335 17
859-0065-00-1240002 65 PN10/16 10 - 16 290 104 131 335 17
859-0065-00-1240003 65 PN10/16 0.1 - 1 290 104 131 335 17
859-0080-00-1240000 80 PN10/16 0.6 - 6 310 117 131 354 21
859-0080-00-1240001 80 PN10/16 5 - 11 310 117 131 354 21
859-0080-00-1240002 80 PN10/16 10 - 16 310 117 131 354 21
859-0080-00-1240003 80 PN10/16 0.1 - 1 310 117 131 354 21
859-0100-00-1240000 100 PN10/16 0.6 - 6 350 127 131 373 26
859-0100-00-1240001 100 PN10/16 5 - 11 350 127 131 373 26
859-0100-00-1240002 100 PN10/16 10 - 16 350 127 131 373 26
859-0100-00-1240003 100 PN10/16 0.1 - 1 350 127 131 373 26
859-0125-00-1240000 125 PN10/16 0.6 - 6 400 127 131 392 31
859-0125-00-1240001 125 PN10/16 5 - 11 400 127 131 392 31
859-0125-00-1240002 125 PN10/16 10 - 16 400 127 131 392 31
859-0125-00-1240003 125 PN10/16 0.1 - 1 400 127 131 392 31
859-0150-00-1240000 150 PN10/16 0.6 - 6 480 157 139 430 73
859-0150-00-1240001 150 PN10/16 5 - 11 480 157 139 430 73
859-0150-00-1240002 150 PN10/16 10 - 16 480 157 139 430 73
859-0150-00-1240003 150 PN10/16 0.1 - 1 480 157 139 430 73
859-0200-00-0240000 200 PN10 0.6 - 6 600 202 202 521 87
859-0200-00-0240001 200 PN10 5 - 10 600 202 202 521 87
859-0200-00-0240003 200 PN10 0.1 - 1 600 202 202 521 87
859-0200-00-1240000 200 PN16 0.6 - 6 600 202 202 521 87
859-0200-00-1240001 200 PN16 5 - 11 600 202 202 521 87
859-0200-00-1240002 200 PN16 10 - 16 600 202 202 521 87
859-0200-00-1240003 200 PN16 0.1 - 1 600 202 202 521 87
859-0250-00-0240000 250 PN10 0.6 - 6 730 252 252 638 144
859-0250-00-0240001 250 PN10 5 - 10 730 252 252 638 144
859-0250-00-0240003 250 PN10 0.1 - 1 730 252 252 638 144
859-0250-00-1240000 250 PN16 0.6 - 6 730 252 252 638 144
859-0250-00-1240001 250 PN16 5 - 11 730 252 252 638 144
859-0250-00-1240002 250 PN16 10 - 16 730 252 252 638 144
859-0250-00-1240003 250 PN16 0.1 - 1 730 252 252 638 144
859-0300-00-0240000 300 PN10 0.6 - 6 850 275 275 715 203
859-0300-00-0240001 300 PN10 5 - 10 850 275 275 715 203
859-0300-00-0240003 300 PN10 0.1 - 1 850 275 275 715 203
859-0300-00-1240000 300 PN16 0.6 - 6 850 275 275 715 203
859-0300-00-1240001 300 PN16 5 - 11 850 275 275 715 203
859-0300-00-1240002 300 PN16 10 - 16 850 275 275 715 203
859-0300-00-1240003 300 PN16 0.1 - 1 850 275 275 715 203
Enquiry
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Components

1. O-ring EPDM rubber
2. O-ring EPDM rubber
3. Hex nut Stainless steel A4, anti friction
4. Disc seal EPDM rubber
5. Washer Stainless steel A4
6. Bolt Stainless steel A4
7. Diaphragm EPDM rubber
8. O-ring EPDM rubber
9. Hex nut Stainless steel A4, anti friction
10. Flat seal EPDM rubber
11. Flat seal EPDM rubber
12. Stem Stainless steel AISI 316
13. Stem guide Stainless steel AISI 316
14. Bonnet Ductile iron GJS-500-7 (GGG-50)
15. Spring Stainless steel AISI 316
16. Diaphragm support Stainless steel AISI 316
17. Distance pipe Stainless steel AISI 316
18. Disc retainer Stainless steel AISI 316
19. Regulating plug Stainless steel AISI 316
20. Seat Stainless steel AISI 316
21. Body Ductile iron GJS-500-7 (GGG-50)
22. Flat seal EPDM rubber
23. O-ring NBR rubber
24. Gasket EPDM rubber
25. Bushing Stainless steel AISI 316
26. Needle close control Stainless steel AISI 316
27. Body Stainless steel AISI 316
28. O-ring EPDM rubber
29. Insert Stainless steel AISI 316
30. O-ring EPDM rubber
31. Needle open control Stainless steel AISI 316
32. O-ring EPDM rubber
33. O-ring EPDM rubber
34. Body Stainless steel AISI 316
35. O-ring EPDM rubber
36. Spring Stainless steel AISI 316
37. Ball Stainless steel AISI 316
38. Seat Stainless steel AISI 316
39. Bushing Stainless steel AISI 316
40. Pilot valve Stainless steel AISI 316
41. Bolt Stainless steel A4
42. Mechanical air-vent Stainless steel AISI 316
43. Filter Stainless steel AISI 316

Test/Approvals

  • Seat: 1.1 x PN. Body: 1.5 x PN.  |
  • Test of duty point, if specified (Optional).

Standards

  • EN 1074-5
  • Face-to-face dimension according to EN 558, Series 1
  • Flange drilling to EN1092, PN10/16
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