AVK PRESSURE REDUCING CONTROL VALVE, PN10/16
Reduced bore, SS-304/DI trim, SS-304 pilot, brass fittings/accs., EPDM/WRAS rubber, blue 300µm GSK coating, protected pos. ind.
Contact
AVK Saudi Valves Manufacturing Co. Ltd.
Street 45, Industrial Area, Phase 4 Jeddah 21443, Saudi Arabia Email: sales_sv@avksvmc.com Working Hours: Sunday to Thursday, 8:00 AM – 5:00 PM
Control valve, pressure reducing, for drinking water or other neutral liquids to max. 70°C
AVK series 879 diaphragm actuated pressure reducing control valves (PRV) automatically maintain a 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.
Both full bore and reduced bore versions are available with the full bore having full capacity and the reduced bore having increased precision and smooth regulation at low flow rates.
| Variant 879/000X99-004 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile iron |
| PN: | PN 10/16 |
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, 300µm GSK approved, RAL 5017, according to DIN 3476 and WRAS-DVGW/W270/UBA
- All rubber parts approved for drinking water
- All non-coated internals made of stainless steel or bronze
- A needle valve fitted between the upstream side and the control chamber allows for adjustment of the regulation reaction time
- Closing the needle valve isolates the control chamber and fixes the position of the main valve allowing for service of the pilot valve
- Fittings, pipes and accessories in Ni-plated brass
- Optional visual position indicator with acrylic glass protection
Components
| 1. | Body | Ductile iron EN GJS-500-7 |
| 2. | O-ring | EPDM rubber |
| 3. | O-ring | EPDM rubber |
| 4. | Plug sealing | EPDM rubber |
| 5. | Nut | Stainless steel A4 |
| 6. | Washer | Stainless steel A4 |
| 7. | Bolt | Stainless steel A4 |
| 8. | Diaphragm | EPDM rubber |
| 9. | Spring | Stainless steel 316 |
| 10. | Seal | EPDM rubber |
| 11. | Seal | EPDM rubber |
| 12. | Cover | Ductile iron EN GJS-500-7 |
| 13. | Nut | Stainless steel A4 |
| 14. | Diaphragm support | Ductile iron EN GJS-500-7 |
| 15. | Obturator | Ductile iron EN GJS-500-7 |
| 16. | Regulating plug | Stainless steel 316 |
| 17. | Seat | Stainless steel 316 |
| 18. | Stem | Stainless steel 316 |
| 19. | Pilot valve | Stainless steel 316 |
| 20. | Pressure gauge | Stainless steel 316 |
| 21. | Ball valve | Stainless steel 316 |
| 22. | Needle valve | Stainless steel 316 |
| 23. | Y-strainer / Orifice | Stainless steel 316 |
Test/Approvals
- Hydraulic test: 1.5 x PN |
- Tested according to EN12266-1.
Standards
- Designed according to EN 1074 - 5
- Face to face according to EN 558 Table 2 Basic Series 1
- Flange drilling to EN1092-2 (ISO 7005-2), PN10/16
