AVK NOZZLE CHECK VALVE, MULTI STEM, PN10/16
SS 420 stem, SS 304 spring, alu-bronze bush, A2 fasteners, FBE coating, EPDM rubber, horiz./vert.
Fast reacting nozzle check valve with spring return, face-to-face EN558/14, for drinking water and other neutral liquids to 80°C
The AVK spring loaded nozzle check valve is a reliable, fast reacting blocker of reverse flow in water pipes. In case of pump stop the spring loaded valve cone will make sure the water flow is shut off swiftly and quietly before it can change direction and cause water hammer. All metal parts are made of either stainless steel or epoxy coated ductile iron| Variant 876/01-001 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile iron |
| DN: | DN400 - DN600 |
| PN: | PN 10/16 |
Features
-
The valve cone is spring loaded to make sure the valve closes before the flow can reverse and cause water hammer
- An optimized flow path keeps head loss down to a minimum
- Stem in stainless steel SS-420, spring in stainless steel SS-304, bushing in alu-bronze
- Stainless steel, grade A2 (304) fastenersMuti-stem ensures minimum disc travel reducing closure time
- All irons parts coated with 250µm blue RAL 5005 fusion bonded epoxy (FBE)
- Centering stem runs in high strengh alu-bronze bushings
- Approved for drinking water according to Decreto Ministeriale nr. 174 - Ministero della Salute
- For both horizontal and vertical installation
Downloads
Datasheet
Reference nos. and dimensions:
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| AVK ref. no. | DN mm |
Flange drilling |
D mm |
D1 mm |
D2 mm |
D3 mm |
Number of bolts |
L mm |
L1 mm |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|---|---|---|
| 876-0400-01-01102012 | 400 | PN10 | 565 | 515 | 480 | 28 | 16 | 310 | - | 160 |
| 876-0400-01-11102012 | 400 | PN16 | 580 | 525 | 480 | 31 | 16 | 310 | - | 165 |
| 876-0450-01-01102012 | 450 | PN10 | 615 | 565 | 560 | 28 | 20 | 330 | 7 | 180 |
| 876-0450-01-11102012 | 450 | PN16 | 640 | 585 | 548 | 31 | 20 | 330 | 7 | 190 |
| 876-0500-01-01102012 | 500 | PN10 | 670 | 620 | 582 | 28 | 20 | 350 | 5 | 260 |
| 876-0500-01-11102012 | 500 | PN16 | 715 | 650 | 609 | 34 | 20 | 350 | 5 | 275 |
| 876-0600-01-01102012 | 600 | PN10 | 780 | 725 | 682 | 31 | 20 | 390 | 15 | 420 |
| 876-0600-01-11102012 | 600 | PN16 | 840 | 770 | 720 | 37 | 20 | 390 | 15 | 480 |
Enquiry
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Components
| 1. | Body | Ductile iron GJS-500-7 |
| 2. | Disc | Ductile iron, EPDM encapsulated |
| 3. | Spring | Stainless steel AISI 304 |
| 4. | Stem | Stainless steel AISI 420 |
| 5. | Ring | Polyamide |
| 6. | Nut | Stainless steel A2 |
| 7. | Bushing | Alu-bronze C61900 |
| 8. | Plug | Ductile iron GJS-500-7 |
| 9. | Diffuser sleeve | Ductile iron GJS-500-7 |
| 10. | Set screw | Stainless steel A2 |
Test/Approvals
- Tested according to EN 12266-1
- WRAS approved materials
Standards
- EN 1074-3, EN 12266
- Face-to-face dimension according to EN 558, Series 14
- Flange drilling to EN1092, PN10/16
