1. Home /
  2. Product finder

AVK CONTROL VALVE, PRESSURE SUSTAIN/RELIEF, PN10/16

Reduced bore, SS-304/DI trim

Control valve, pressure sustain/relief, for drinking water or other neutral liquids to max. 70°C

AVK series 869 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, where the valve automatically opens to dump excess upstream pressure if it exceeds the setpoint.

The regulation is asymmetric with quick opening and slow closing. This makes sure to get sufficient reaction to pressure surges while avoiding water hammer when reducing flow.

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 869/201X-001
Connection: Flanged
Material: Ductile iron
DN: DN80 - DN500
PN: PN10/16

Features

  • The lifted seat design controls the flow around the plug so that in case of cavitation this happens with minimal damage away from plug and seat
  • The parabolic shape of the plug creates a smooth regulating characteristic with low gain around the near-closed positions improving control performance at low flow
  • Non-symmetric axial position of rubber diaphragm results in low stretch stress when closed
  • Body and bonnet of ductile iron coated with fusion bonded epoxy, 300 micron, GSK approved, RAL 5017, according to DIN 3476 and WRAS-DVGW/W270/UBA
  • All rubber parts approved for drinking water
  • All non-coated internal parts in stainless steel or bronze
  • A needle valve between upstream and control chamber allows for adjustment of the regulation reaction time
  • Closing the needle valve isolates the control chamber and fixes the main valve position allowing for service of the pilot
  • Integrated lifting holes on body from DN150 for ease of handling

Downloads

Datasheet
Tender Text
Installation, operation and maintenance manuals

Reference nos. and dimensions:

Scroll for more info
AVK ref. no. DN
mm		 Flange
drilling		 Press. Range
bar		 L
mm		 L2
mm		 W1
mm		 W2
mm		 H3
mm		 Theoretical
weight/kg
869-0080-20-1340010 80 PN10/16 1.5 - 6 399 310 108 242 451 24
869-0080-20-1340011 80 PN10/16 5 - 10 399 310 108 242 451 24
869-0080-20-1340012 80 PN10/16 10 - 16 399 310 108 242 451 24
869-0100-20-1340010 100 PN10/16 1.5 - 6 429 350 117 252 467 28
869-0100-20-1340011 100 PN10/16 5 - 10 429 350 117 252 467 28
869-0100-20-1340012 100 PN10/16 10 - 16 429 350 117 252 467 28
869-0150-20-1340010 150 PN10/16 1.5 - 6 554 480 143 279 528 46
869-0150-20-1340011 150 PN10/16 5 - 10 554 480 143 279 528 46
869-0150-20-1340012 150 PN10/16 10 - 16 554 480 143 279 528 46
869-0200-20-0340010 200 PN10 1.5 - 6 640 600 203 304 618 96
869-0200-20-0340011 200 PN10 5 - 10 640 600 203 304 618 96
869-0200-20-1340010 200 PN16 1.5 - 6 640 600 203 304 618 96
869-0200-20-1340011 200 PN16 5 - 10 640 600 203 304 618 96
869-0200-20-1340012 200 PN16 10 - 16 640 600 203 304 618 96
869-0250-20-0340010 250 PN10 1.5 - 6 770 730 254 329 722 157
869-0250-20-0340011 250 PN10 5 - 10 770 730 254 329 722 157
869-0250-20-1340010 250 PN16 1.5 - 6 770 730 254 329 722 157
869-0250-20-1340011 250 PN16 5 - 10 770 730 254 329 722 157
869-0250-20-1340012 250 PN16 10 - 16 770 730 254 329 722 157
869-0300-20-0340010 300 PN10 1.5 - 6 850 850 277 354 806 221
869-0300-20-0340011 300 PN10 5 - 10 850 850 277 354 806 221
869-0300-20-1340010 300 PN16 1.5 - 6 850 850 277 354 806 221
869-0300-20-1340011 300 PN16 5 - 10 850 850 277 354 806 221
869-0300-20-1340012 300 PN16 10 - 16 850 850 277 354 806 221
869-0350-20-0340010 350 PN10 1.5 - 6 980 980 302 384 869 324
869-0350-20-0340011 350 PN10 5 - 10 980 980 302 384 869 324
869-0350-20-1340010 350 PN16 1.5 - 6 980 980 302 384 869 324
869-0350-20-1340011 350 PN16 5 - 10 980 980 302 384 869 324
869-0350-20-1340012 350 PN16 10 - 16 980 980 302 384 869 324
869-0400-20-0340010 400 PN10 1.5 - 6 1100 1100 355 412 983 498
869-0400-20-1340010 400 PN16 1.5 - 6 1100 1100 355 412 983 498
869-0450-20-0340010 450 PN10 1.5 - 6 1200 1200 398 439 1050 636
869-0450-20-0340011 450 PN10 5 - 10 1200 1200 398 439 1050 636
869-0450-20-1340010 450 PN16 1.5 - 6 1200 1200 398 439 1050 636
869-0450-20-1340011 450 PN16 5 - 10 1200 1200 398 439 1050 636
869-0450-20-1340012 450 PN16 10 - 16 1200 1200 398 439 1050 636
869-0500-20-0340010 500 PN10 1.5 - 6 1250 1250 465 465 1169 938
869-0500-20-1340010 500 PN16 1.5 - 6 1250 1250 465 465 1169 938
Enquiry
Scroll for more info

Components

1. O-ring EPDM rubber
2. Plug sealing EPDM rubber
3. Washer Stainless steel A2
4. Diaphragm EPDM rubber
5. Bolt Stainless steel A2
6. Nut Stainless steel A2
7. Stem Stainless steel AISI 431
8. Stem guide Stainless steel AISI 304
9. Bonnet Ductile iron GJS-500-7 (GGG-50)
10. Spring Stainless steel AISI 304
11. Washer Bronze CC499K
12. Diaphragm support Ductile iron GJS-500-7 (GGG-50)
13. Disc retainer Ductile iron GJS-500-7 (GGG-50)
14. Regulating disc Stainless steel AISI 304
15. Seat Stainless steel AISI 304
16. Body Ductile iron GJS-500-7 (GGG-50)
17. Filter Stainless steel AISI 304
18. Plug Stainless steel AISI 304
19. Pilot valve Stainless steel AISI 304
20. Needle valve Stainless steel AISI 304
21. Control orifice Stainless steel AISI 304

Test/Approvals

  • Hydraulic test according to EN 1074-1 and 5/ EN12266
  • WRAS approved materials

Standards

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