Technical description
Body made of closed-die or open-die forging with a bonnet joint; for Pp up to 4 MPa with a sealing ring, for others without an inserted seal. Seat pressed into the body and secured with a seal weld. Sealing surfaces of the seat and disc hard-faced with a cobalt-free hard-facing alloy. Bonnet joint sealing ring made of asbestos-free material. Self-acting operation. Can be equipped with closed-position signalling.
Image gallery
Drawings and dimensions
Application
Self-acting valve preventing the backflow of the working medium, intended for radioactive water, steam, gases and other media, particularly in primary, secondary and auxiliary circuits of nuclear power plants and chemical plants, for installation inside or outside the containment, seismically resistant, for the operating parameters given in the table.
Operation
Testing
The valves are tested with demineralised water for strength and tightness at a minimum of 1.6 times Pp, for seat tightness at Pp and for vacuum tightness with helium at a vacuum of 10.6 Pa. No indication greater than 1·10⁻⁴ Pa·l·s⁻¹ is permitted.
Installation
The valves are normally installed only in horizontal piping with the bonnet on top and the flow directed under the disc.
Connection
Butt-welded according to ČSN and GOST standards.
Documentation
Operating parameters
| Pp (MPa) | Temperature (°C) | ||||||
|---|---|---|---|---|---|---|---|
| 250 | 275 | 300 | 250 | 300 | 335 | 350 | |
| Body material | |||||||
| 11 416 | 08Cr18Ni10Ti | ||||||
| Operating pressure MPa | |||||||
| ÷ 4 | 2,5 | - | - | 2,5 | - | - | - |
| 4 | - | - | 4 | - | - | - | |
| 4 ÷ 14 | - | - | 8,6 | - | - | - | - |
| 12 | 6 | 9,2 | - | 9,2 | 14 | - | |
| - | - | 11 | - | - | - | - | |
| 14 ÷ 20 | - | - | - | - | 20 | - | 18 |
Materials of main parts
| Pos. | Part identification | Material | ||
|---|---|---|---|---|
| 4040 | 0040 | |||
| 053 | Seal | Exp. graphite | ||
| Hard facing | ANTINIT DUR 500, C 1111 | |||
| 194 | Disc | 11 416 | 08Х18Н10Т | 12 020 |
| 048 | Nut | 12 020 | 17 134 | 14X17H2 |
| 044 | Screw | 15 320 | ХН35ВТ | |
| 014 | Cover | 11 416 | 08Х18Н10Т | |
| 003 | Flange | 11 416 | ||
| Hard facing | ANTINIT DUR 500, C 1111 | |||
| 004 | Seat | 11 416 | 08Х18Н10Т | 12 020 |
| 002 | Body | 11 416 | 08Х18Н10Т |
| Pos. | Part identification | Material | ||
|---|---|---|---|---|
| 4160 | 0160 | |||
| Hard facing | ANTINIT DUR 500, C 1111 | |||
| 194 | Disc | 11 416 | 08Х18Н10Т | 12 020 |
| 048 | Nut | 12 020 | 17 134 | 14X17H2 |
| 044 | Screw | 15 320 | ХН35ВТ | |
| 014 | Cover | 11 416 | 08Х18Н10Т | |
| Hard facing | ANTINIT DUR 500, C 1111 | |||
| 004 | Seat | 11 416 | 08Х18Н10Т | 12 020 |
| 002 | Body | 11 416 | 08Х18Н10Т |
Dimensions
| DN/d | Pp (MPa) | A | D (max) | H | L | V | kg |
|---|---|---|---|---|---|---|---|
| 50/55 | ÷ 4 | 210 | 62 | 70 | 360 | 200 | 34 |
| 65/55 | 79 | 35 | |||||
| 80/75 | 265 | 95 | 90 | 450 | 235 | 54 | |
| 100/75 | 113 | 57 | |||||
| 125/110 | 320 | 141 | 130 | 500 | 305 | 129 | |
| 150/110 | 168 | 550 | 133 | ||||
| 200/150 | 390 | 229 | 155 | 650 | 370 | 225 | |
| 250/225 | 560 | 384 | 235 | 800 | 530 | 764 | |
| 300/225 | 337 | 900 | 821 |
| DN/d | Pp (MPa) | A | D (max) | H | L | V | kg |
|---|---|---|---|---|---|---|---|
| 50/55 | 4 ÷ 14 | 210 | 62 | 70 | 360 | 205 | 54 |
| 65/55 | 79 | 55 | |||||
| 80/75 | 265 | 95 | 90 | 450 | 240 | 105 | |
| 100/75 | 113 | ||||||
| 125/110 | 320 | 141 | 130 | 500 | 340 | 215 | |
| 150/110 | 168 | 550 | 225 | ||||
| 200/150 | 390 | 229 | 155 | 650 | 420 | 380 | |
| 250/225 | 560 | 284 | 235 | 800 | 550 | 1100 | |
| 300/225 | 337 | 900 | 1120 | ||||
| 50/55 | 14 ÷ 20 | 235 | 79 | 70 | 360 | 230 | 65 |
| 65/55 | |||||||
| 80/75 | 305 | 95 | 90 | 450 | 270 | 120 | |
| 100/75 | 113 | ||||||
| 125/110 | 370 | 141 | 130 | 500 | 360 | 245 | |
| 150/110 | 168 | 550 | 256 | ||||
| 200/150 | 440 | 229 | 155 | 650 | 445 | 424 | |
| 250/225 | 560 | 284 | 235 | 800 | 570 | 1200 | |
| 300/225 | 337 | 900 | 1200 | ||||
| 350/225 | 390 | 1300 |
Other
Hotline
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