Technical description
Body made of closed-die or open-die forging, cast yoke, joined by a bonnet joint; for DN 65 – 300 and Pp up to 9.2 MPa with a sealing ring, for others without an inserted seal. Seats pressed into the body and secured with a seal weld. Sealing surfaces of the seats and wedge hard-faced with a cobalt-free hard-facing alloy. Stem packing and bonnet joint sealing ring made of asbestos-free material. Supplied according to special technical specifications in four pressure series: Pp ÷ 4; 4 ÷ 9.2; 9.2 ÷ 14; 14 ÷ 20 MPa; DN 65 – 150 gate valves in two pressure series: Pp ÷ 9.2 and 9.2 ÷ 14 MPa.
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Drawings and dimensions
Application
Shut-off valve intended for radioactive water, steam, gases and all 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
Operated by handwheel, by an electric actuator located inside or outside the containment, by spur or bevel gear and by direct remote control. The gate valves have an opening for removing the packing under pressure and a position indicator and, when operated by handwheel, can also be equipped with a locking device.
Testing
The gate valves are tested with demineralised water for strength and tightness at a minimum of 1.6 times Pp, for operability and seat tightness at Pp (for gas – seat tightness with air at 0.6 MPa) 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. The body-to-flange weld is inspected by radiography and ultrasound.
Installation
The gate valves can be installed in any position regardless of the flow direction of the working medium. The exception is operation by an electric actuator, where the motor axis must be horizontal. For remote operation, the maximum deflection angle of the extension rods is 25°. Electric actuators and gears are connected to the valve according to ISO 5210 and DIN 3210. It is recommended to install larger gate valves in horizontal piping with the stem vertical and the actuator on top.
Connection
Butt-welded according to ČSN and GOST standards. The gate valves can be supplied with electric actuators from ZPA Pečky, AUMA, Rotork and other manufacturers.
Documentation
Operating parameters
| Pp (MPa) | Temperature (°C) | ||||||
|---|---|---|---|---|---|---|---|
| 250 | 275 | 300 | 250 | 300 | 335 | 350 | |
| Body material | |||||||
| 11416 | 08Cr18Ni10Ti | ||||||
| Acceptable operating pressure MPa | |||||||
| 4 | 2,5 | - | - | 2,5 | - | - | - |
| 4 | - | - | 4 | - | - | - | |
| 4 ÷ 9,2 | - | 6 | 8,6 | - | 9,2 | - | - |
| - | - | 9,2 | - | - | - | - | |
| 9,2 ÷ 14 | - | 11 | 12 | - | 14 | - | |
| 14 ÷ 20 | - | - | - | - | 20 | - | 18 |
Materials of main parts
| Pos. | Part identification | Material | Pos. | Part identification | Material |
|---|---|---|---|---|---|
| 104 | Bridge | 26 | 042 | Nut | 11416 |
| 128 | Electric actuator | 150 | Tube | 08X18H10T | |
| 107 | Coupling | 12 | 084 | Ring | 08X18H10T |
| 125 | Insulation ring | IT | 036 | Bush | 08X18H10T |
| 105 | Flange | 11 | 013 | Sealing cover | 11416 |
| 061 | Bearing | ČSN 024730 | 033 | Stem nut | 11416 / 423046, 47 |
| 064 | Lubricator | ČSN 027410 | 012 | Yoke | 11416 |
| 054 | Sealing ring | Exp. graphite | 015 | Stem | 14X17H2 |
| 095 | Seal | ||||
| 086 | Nut | 15 - ČSN 131530 | Hard facing | TYPE C1111 | |
| 083 | Nut | 15 - ČSN 131530 | 017 | Wedge | 11 416 08X18H10T |
| 048 | Nut | 17134 | 030 | Wedge guide | 11 523 17027.4 |
| 081 | Screw | 15 | 014 | Cover | 11 416 08X18H10Т |
| 082 | Screw | 15 | Hard facing | TYPE C1111 | |
| 044 | Bolt | XN35BT | 004 | Seat | 11 416 08X18H10T |
| 088 | Plug | 08X18H10T | 001 | Body | 11 416 08X18H10T |
Dimensions
| DN/d | Pp (MPa) | D K | D (max) I | H | L | V | V 4 | A | kg | |
|---|---|---|---|---|---|---|---|---|---|---|
| Handwheel | Electric actuator | |||||||||
| 200/170 | ÷ 4 | 500 | 229 | 105 | 550 | 1040 | 1170 | 664 | 216 | 306 |
| 250/250 | 710 | 284 | 235 | 650 | 1350 | 1470 | 777 | 546 | 725 | |
| 300/250 | 337 | 750 | 1465 | 581 | 761 | |||||
| 65/60 | ÷ 9,2 | 320 | 81 | 70 | 330 | 575 | 822 | 562 | 48 | 91 |
| 80/75 | 95 | 100 | 360 | 690 | 917 | 664 | 78 | 155 | ||
| 100/90 | 113 | 400 | 90 | 167 | ||||||
| 125/110 | 500 | 141 | 125 | 890 | 1050 | 163 | 239 | |||
| 150/130 | 168 | 198 | 238 | |||||||
| 200/140 | 4 ÷ 9,2 | 630 | 229 | 155 | 550 | 1020 | 1185 | 664 | 262 | 328 |
| 250/225 | 800 | 284 | 235 | 650 | 1405 | 1570 | 777 | 750 | 919 | |
| 300/225 | 337 | 750 | 785 | 944 |
| DN/d | Pp (MPa) | D K | D (max) I | H | L | V | V 4 | A | kg | |
|---|---|---|---|---|---|---|---|---|---|---|
| Handwheel | Electric actuator | |||||||||
| 65/55 | 9,2 ÷ 14 | 320 | 81 | 70 | 360 | 650 | 920 | 664 | 60 | 125 |
| 80/75 | 400 | 95 | 90 | 450 | 730 | 965 | 95 | 160 | ||
| 100/75 | 113 | 965 | 100 | 165 | ||||||
| 125/110 | 500 | 141 | 130 | 500 | 960 | 1150 | 190 | 260 | ||
| 150/110 | 168 | 550 | 1150 | 220 | 290 | |||||
| 200/140 | 630 | 229 | 650 | 1120 | 1340 | 777 | 360 | 510 | ||
| 225/200 | 800 | 255 | 235 | 750 | 1620 | 1775 | 869 | 1190 | 455 | |
| 250/225 | 284 | 800 | ||||||||
| 300/225 | 337 | 900 | 1230 | 495 |
| DN/d | Pp (MPa) | D K | D (max) I | H | L | V | V 4 | A | kg | |
|---|---|---|---|---|---|---|---|---|---|---|
| Handwheel | Electric actuator | |||||||||
| 125/110 | 14 ÷ 20 | 935 | 165 | 130 | 560 | - | 1220 | 820 | - | 486 |
| 150/110 | ||||||||||
| 250/225 | 1300 | 284 | 235 | 800 | 1810 | 1955 | 1080 | 1580 | 1435 | |
| 300/225 | 337 | 900 | 1600 | 1455 | ||||||
| 350/225 | 391 | 1640 | 1535 |
Other
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