1. Welcome to AVK Korea /
  2. Product finder

PLUNGER CONTROL VALVE, DUCTILE IRON, PN25

SS trim/piston, bronze guides, A4/A2 bolts, Rotork gearbox, modulating, 250µm blue RAL5017 EP

Contact

AVK Valves Korea Co., Ltd.

Suite 1409, 14/F, CENTUM LEADERS MARK, 17, APEC-ro, Haeundae-gu, Busan 48060, Korea

Plunger control valve for flow rate control and pressure reducing applications. For water and other neutral and hydrocarbon-free media to max. 70°C.

AVK series 870 are designed as plunger control valves for inline applications. Unlike butterfly- or gate valves, that should only be in either fully open or fully closed position, plunger valves are designed to operate in between and perform control functions in water supply systems.

The design consists of a single-piece body made of epoxy coated ductile iron. Internal components in contact with water are made of either stainless steel or bronze; materials that guarantee a good anti-corrosion performance and a long service life.

Variant 870/0007-002
Connection: Flanged
Material: Ductile iron
DN: DN200 - DN600
PN: PN 25

Features

  • One-piece body construction
  • T-shape main seal located in safety flow area ensuring minimal wear and long service life
  • Maintenance access is conveniently provided by the downstream retaining ring and the upstream cover being attached with screws
  • Low operating torque due to pressure balance in chamber inside
  • Gearbox suitable for modulating operation
  • Low head loss coefficient in fully open position due to optimized internal body shape
  • Double O-ring sealed drive shaft with all other shafts and bearings protected against corrosion with O-ring combinations
  • 4 guide rails ensure no vibration during operation and accurate alignment throughout full valve stroke
  • Body in ductile iron with internal parts in stainless steel and bronze guide rails for high corrosion resistance
  • Internally and externally corrosion protected with a coating of blue RAL 5017 fusion bonded epoxy to DIN 3476 and applied in a GSK approved process.

Downloads

Datasheet
Tender Text

Reference nos. and dimensions:

Scroll for more info
Reference no. DN
mm		 Flange
drilling		 L
mm		 L1
mm		 H
mm		 H1
mm		 H2
mm		 H4
mm		 W1
mm		 W2
mm		 W3
mm		 W4
mm		 D1
mm		 Theoretical
weight/kg
870-0200-00-746407 200 PN25 400 140 433 190 122 51 180 225 328 140 20 95
870-0250-00-746407 250 PN25 450 230 503 225 263 51 213 300 403 230 20 163
870-0300-00-746407 300 PN25 500 200 584 261 263 51 243 328 431 200 20 218
870-0350-00-746407 350 PN25 550 200 664 301 291 51 278 370 476 240 20 296
870-0400-00-746407 400 PN25 600 240 755 342 313 51 323 430 562 300 20 429
870-0450-00-746407 450 PN25 650 340 811 370 335 51 349 460 592 340 20 556
870-0500-00-746407 500 PN25 700 340 884 397 335 51 379 490 622 340 20 648
870-0600-00-746407 600 PN25 800 400 1050 480 335 51 441 560 692 500 20 1016
2D/3D drawings
Enquiry
Scroll for more info

Components

1. Upstream cover Stainless steel, cast
2. Crank Stainless steel 1.4308 (CF8), cast
3. Body Ductile iron GJS-500-7 (GGG-50)
4. Push rod Stainless steel
5. Piston Stainless steel
6. Guide rail Bronze CC499K
7. Retainer ring Stainless steel
8. Lock ring Stainless steel
9. Piston flange Stainless steel 1.4308 (CF8), cast
10. Main seal EPDM rubber
11. Lifting eye Stainless steel A4
12. Bush Bronze CC499K
13. Shaft, drive Stainless steel 1.4021
14. Seal housing Bronze CC499K
15. Gearbox Ductile Iron
16. Washer Bronze CC499K
17. Bolt Stainless steel A4
18. O-ring EPDM rubber
19. Split pin Stainless steel A4
20. Washer Stainless steel A4
21. Bush Bronze CC499K
22. Clevis pin Stainless steel A4
23. Key Stainless steel A4
24. Bolt Stainless steel A2

Test/Approvals

  • Hydraulic test according to EN 1074-1 and 5, EN12266 |
  • Seat: 1.1×PN (in bar), Body: 1.5×PN (in bar).

Standards

  • Face-to-face dimension according to EN 558, basic series 15
  • Flange drilling to EN1092, PN25
  • Designed according to EN 1074-1/5 & EN1349
0 Files In the package