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DIN3352-F4 NRS Iron Gland Type Resilient seat gate valve, DN40-DN1200
Features
● The ductile iron core is fully vulcanized with EPDM rubber, no iron parts are exposed to the medium and the excellent rubber vulcanization prevents creeping corrosion underneath the rubber.
● Guides in the wedge and on the valve body ensure a uniform closure, safe operation ensured as the guides prevent overloading of the stem.
● Stainless steel stem with rolled threads for high strength.
● The valve can replace stem seals under pressure.
● Full bore.
● Body inside and outside fusion bonded epoxy coating with excellent corrosion resistant performance.
Standard
| Designstandard | DIN3352 F4, EN1171 |
| Flange drilling standard | EN1092-2 PN10/PN16 |
| Facetofacestandard | EN558-1 Series 14 |
| Hydraulic test standard | EN1074-1 and 2 /EN12266 |
| Seat:1.1*PN(in bar), Body:1.5*PN(in bar) |
Technical Parameters
| Nominaldiameter(mm) | 40～1200 | 40～1200 | |
| Nominalpressure(Mpa) | 1.0 | 1.6 | |
| Testingpressure | Shell(Mpa) | 1.5 | 2.4 |
| Seal(Mpa) | 1.1 | 1.76 | |
| Suitabletemperature | -40°C～150°C | ||
| Suitablemedium | Drinkingwater、sewage、seawater、irrigation,or other neutral liquid. | ||
Main Raw Material
| 1 | Body | Ductile Iron | 9 | Gland bolt | Steel gr.8.8 |
| 2 | Wedge | Ductile Iron+EPDM | 10 | Handwheel | Ductile Iron |
| 3 | Wedge Nut | Brass | 11 | Gland | Ductile Iron |
| 4 | Stem | Stainless steel | 12 | O-ring | EPDM rubber |
| 5 | Bonnet gasket | EPDM rubber | 13 | Nut | Stainless steel |
| 6 | Bonnet | Ductile iron | 14 | Washer | Steel |
| 7 | Thrust collar | Brass | 15 | Bonnet bolt | Steel gr.8.8 |
| 8 | O-ring | EPDM rubber |
Components may be substituted with equivalent or higher class materials.
