DV-CV-2016
Spring-loaded dual-plate wafer check valve. Replaces a swing check where space is tight.
Springs close the plates before flow reverses, which reduces water hammer. Suitable for horizontal and vertical installation.
| Nominal size | DN 50–300 |
|---|---|
| Pressure rating | PN 16 |
| Operating temperature | −10 … +120 °C |
| Body material | Ductile iron EN-GJS-400-15 (GGG40) |
| Closing element | Stainless cast steel CF8M (1.4408) |
| Seat and seal | EPDM |
| Stem | Stainless steel AISI 316 (1.4401) |
| Connection | Wafer (between flanges) |
| Flange standard | EN 1092-1 PN 10/16 |
| Face-to-face standard | API 594 |
| Design standard | EN 12334 |
| Testing standard | EN 12266-1 |
| Operation | Self-acting (by flow) |
| Media | Water, Hot water and heating water, Compressed air, Oil and fuel |
| Coating | Epoxy paint, RAL 5005 (signal blue) |
| DN | Inch | L (mm) | Weight (kg) | Kv (m³/h) |
|---|---|---|---|---|
| DN 50 | 2" | 54 | 2.4 | 260 |
| DN 80 | 3" | 57 | 5.6 | 666 |
| DN 100 | 4" | 64 | 8.4 | 1,040 |
| DN 150 | 6" | 76 | 17.3 | 2,340 |
| DN 200 | 8" | 95 | 29.1 | 4,160 |
| DN 300 | 12" | 143 | 60.4 | 9,360 |
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2014/68/EU
Valves classed as pressure equipment are designed to this directive and made under notified body supervision. For the buyer, the valve can legally enter the EU market, and the declaration of conformity ships with it.
2014/68/EU
CE is not a certificate but the manufacturer's declaration. On these valves it is applied under the PED, together with the notified body number. Small valves that fall under Article 4.3 of the PED carry no CE marking.
Drinking water networks, pumping stations, building heating and cooling.
Steam, superheated water, thermal oil and district heating lines.
Compressed air, cooling water, oil and mild chemical lines.