Diaphragm Operated Control Valve, for Pressure Sustaining/Relief Applications(PSV), PN10/16

Reduced bore, WRAS approved materials, AISI304 pipes and fittings

Contact

AVK Philippines Inc.

70 West Avenue Brgy. West Triangle 1104 Quezon City, Philippines

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

AVK series 859 diaphragm actuated pressure sustaining control valves (PSV) automatically secure a minimum upstream pressure by reducing the flow if the upstream pressure drops below the setpoint.

Adjusting the setpoint above the usual operating pressure changes the function to pressure relief (PRV), where the valve automatically opens to dump excess upstream pressure if it exceeds the setpoint.

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 859/001X-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).

Downloads

Datasheet

Reference nos. and dimensions:

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AVK ref. no. DN
mm
Flange
drilling
Press. Range
bar
L
mm
W1
mm
W2
mm
H3
mm
Theoretical
weight/kg
859-0065-00-1240010 65 PN10/16 0.6 - 6 290 140 122 348 17
859-0065-00-1240011 65 PN10/16 5 - 11 290 140 122 348 17
859-0065-00-1240012 65 PN10/16 10 - 16 290 140 122 348 17
859-0080-00-1240010 80 PN10/16 0.6 - 6 310 140 122 367 21
859-0080-00-1240011 80 PN10/16 5 - 11 310 140 122 367 21
859-0080-00-1240012 80 PN10/16 10 - 16 310 140 122 367 21
859-0100-00-1240010 100 PN10/16 0.6 - 6 350 140 122 386 26
859-0100-00-1240011 100 PN10/16 5 - 11 350 140 122 386 26
859-0100-00-1240012 100 PN10/16 10 - 16 350 140 122 386 26
859-0125-00-1240010 125 PN10/16 0.6 - 6 400 140 122 405 31
859-0125-00-1240011 125 PN10/16 5 - 11 400 140 122 405 31
859-0125-00-1240012 125 PN10/16 10 - 16 400 140 122 405 31
859-0150-00-1240010 150 PN10/16 0.6 - 6 480 140 139 443 73
859-0150-00-1240011 150 PN10/16 5 - 11 480 140 139 443 73
859-0150-00-1240012 150 PN10/16 10 - 16 480 140 139 443 73
859-0200-00-0240010 200 PN10 0.6 - 6 600 202 202 534 87
859-0200-00-0240011 200 PN10 5 - 10 600 202 202 534 87
859-0200-00-1240010 200 PN16 0.6 - 6 600 202 202 534 87
859-0200-00-1240011 200 PN16 5 - 11 600 202 202 534 87
859-0200-00-1240012 200 PN16 10 - 16 600 202 202 534 87
859-0250-00-0240010 250 PN10 0.6 - 6 730 252 252 651 144
859-0250-00-0240011 250 PN10 5 - 10 730 252 252 651 144
859-0250-00-1240010 250 PN16 0.6 - 6 730 252 252 651 144
859-0300-00-0240010 300 PN10 0.6 - 6 850 275 275 728 203
859-0300-00-0240011 300 PN10 5 - 10 850 275 275 728 203
859-0300-00-1240010 300 PN16 0.6 - 6 850 275 275 728 203
859-0300-00-1240011 300 PN16 5 - 11 850 275 275 728 203
859-0300-00-1240012 300 PN16 10 - 16 850 275 275 728 203
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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