Technical description
Body made of closed-die or open-die forging with a bonnet flange or pressure seal bonnet, with a sealing ring made of asbestos-free material. The internal insert of the pressure lock consists of: For chemical cleaning (CH) and pressurisation (T): sealing and pressure plate, JERIT seal and spreader screw to generate the specific pressure; for chemical cleaning, the cover is provided with a branch opening. For operation (P): insert and two pull-off screws with washers and nuts. The pressure locks operate without actuation. Supplied according to special technical specifications in two pressure series – for medium pressure, up to PN 100, with a bonnet flange; for higher pressures with a pressure seal bonnet.
Image gallery
Drawings and dimensions
Application
Valve for water and steam, particularly in heating and power plants, which, depending on the type of insert fitted, allows chemical cleaning, pressure testing and operation of the equipment, especially the boiler system.
Operation
Testing
The pressure locks are tested with water (or steam at the customer's request) for strength, body tightness, operability and seat tightness depending on the operating parameters and body material. The minimum test pressure for the strength test is 1.5 times PN. The body-to-extender weld is radiographed.
Installation
The pressure locks are installed in horizontal piping with the cover on top. After chemical cleaning, the chemical cleaning cover and the sealing insert must be removed, checked for damage, the sealing rings of the insert replaced, the test insert fitted into the pressure lock and the pressure test cover installed. After pressure testing, the sealing insert must be removed and replaced with the operating insert.
Dimensions
| DN | PN | A | D (max) | H | L | V | kg |
|---|---|---|---|---|---|---|---|
| 125 | 160 ÷ 400 | 254 | 133 | 105 | 500 | 320 | 118 |
| 200 | 330 | 220 | 155 | 650 | 365 | 222 | |
| 225 | 415 | 245 | 160 | 650 | 430 | 401 | |
| 250 | 415 | 277 | 190 | 650 | 470 | 487 | |
| 300 | 625 | 324 | 230 | 1000 | 721 | 1321 | |
| 300 | 63 ÷ 100 | 540 | 324 | 220 | 900 | 490 | 655 |
| 350 | 570 | 377 | 235 | 1000 | 510 | 690 | |
| 400 | 650 | 434 | 255 | 1100 | 540 | 1285 | |
| 450 | 630 | 457 | 280 | 1160 | 570 | 1075 | |
| 500 | 700 | 564 | 320 | 1360 | 595 | 2031 |
Connection
Butt-welded according to ČSN, DIN, EN, ANSI and GOST standards.
Comparison table of Czech and EN materials
| Czech material class | CSN standard | W.Nr | EN material class |
|---|---|---|---|
| 11 416 | ČSN 41 1600 | 1.0425 | P 265 NH |
| 15 128 | ČSN 41 5128 | 1.7715 | 14 MoV6-3 |
| 17 119 | ČSN 41 7119 | 1.4903 | X10CrMoVNb9-1 |
| 17 246, 17 248 | ČSN 41 7246 (48) | 1.4541 | X6CrNiTi18-10 |
| 15 020 | ČSN 41 5020 | 1.5415 | 16Mo3 |
| 15 121 | ČSN 41 5121 | 1.7335 | 13CrMo4-5 |
Documentation
Operating parameters
| PN | Temperature (°C) | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 520 | 540 | 560 | 580 | 600 | 610 | 620 | 630 | 640 | 650 | |
| 11 416 | ||||||||||||||||||
| 63 | 6,3 | 6,3 | 5,5 | 4,8 | 4,1 | 3,5 | 2 | |||||||||||
| 100 | 10 | 10 | 8,8 | 7,6 | 6,5 | 5,6 | 3,2 | |||||||||||
| 160 | 16 | 16 | 14,1 | 12,2 | 10,5 | 9 | 5,1 | |||||||||||
| 250 | 25 | 25 | 22,0 | 19,1 | 16,4 | 14,2 | 8,1 | |||||||||||
| 320 | 32 | 32 | 28 | 25 | 21 | 18 | 15 | |||||||||||
| 400 | 40 | 40 | 35 | 31 | 26 | 23 | 18 | |||||||||||
| C22.8 | ||||||||||||||||||
| 63 | 6,3 | 5,6 | 4,9 | 4,2 | 3,6 | 2,9 | 2,1 | |||||||||||
| 100 | 10 | 8,9 | 7,8 | 6,6 | 5,8 | 4,6 | 3,4 | |||||||||||
| 160 | 16 | 14,3 | 12,5 | 10,6 | 9,2 | 7,4 | 5,5 | |||||||||||
| 250 | 25 | 22,4 | 19,5 | 16,6 | 14,4 | 11,5 | 8,7 | |||||||||||
| 320 | 32 | 28,7 | 25,0 | 21,3 | 18,5 | 14,8 | 11,1 | |||||||||||
| 400 | 40 | 35,9 | 31,3 | 26,6 | 23,1 | 18,5 | 13,9 | |||||||||||
| P 285 NH | ||||||||||||||||||
| 63 | 6,3 | 5,4 | 4,7 | 3,6 | 2,9 | 2,2 | - | |||||||||||
| 100 | 10 | 8,5 | 7,4 | 5,7 | 4,5 | 3,4 | - | |||||||||||
| 160 | 16 | 13,6 | 11,9 | 9,1 | 7,2 | 5,5 | - | |||||||||||
| 250 | 25 | 21,3 | 18,6 | 14,2 | 11,3 | 8,6 | - | |||||||||||
| 15 128 | ||||||||||||||||||
| 63 | 6,3 | 6,1 | 5,2 | 4,4 | 2,8 | |||||||||||||
| 100 | 10 | 9,8 | 8,2 | 7,0 | 4,5 | |||||||||||||
| 160 | 16 | 15,6 | 13,3 | 9,0 | 7,2 | |||||||||||||
| 250 | 25 | 24,4 | 20,7 | 14,0 | 11,3 | |||||||||||||
| 320 | 32 | 31 | 24 | 19 | 15 | |||||||||||||
| 400 | 40 | 39 | 30 | 23 | 18 | |||||||||||||
| 16Mo3 / 15Mo3 | ||||||||||||||||||
| 63 | 6,3 | 6,0 | 5,2 | 5,1 | 4,9 | 4,7 | 3,3 | 2,1 | ||||||||||
| 100 | 10 | 9,5 | 8,4 | 8,1 | 7,8 | 7,5 | 5,3 | 3,4 | ||||||||||
| 160 | 16 | 15,3 | 13,4 | 12,9 | 12,5 | 12 | 8,6 | 5,4 | ||||||||||
| 250 | 25 | 23,9 | 21 | 20,2 | 19,5 | 18,8 | 13,4 | 8,5 | ||||||||||
| 320 | 32 | 31 | 27 | 26 | 25 | 24 | 17 | 11 | ||||||||||
| 400 | 40 | 38 | 34 | 33 | 31 | 30 | 22 | 14 | ||||||||||
| 13CrMo4-5 | ||||||||||||||||||
| 63 | 6,3 | 6,0 | 5,8 | 4,6 | 4,1 | 2,8 | 1,8 | 1,2 | ||||||||||
| 100 | 10 | 9,5 | 9,2 | 8,7 | 7,9 | 5,4 | 3,5 | 2,3 | ||||||||||
| 160 | 16 | 15,3 | 14,8 | 14,3 | 12,7 | 8,7 | 5,6 | 3,7 | ||||||||||
| 250 | 25 | 23,9 | 23,1 | 22,4 | 19,8 | 13,6 | 8,8 | 5,8 | ||||||||||
| 320 | 32 | 31 | 30 | 28 | 27 | 17 | 11 | 7,4 | ||||||||||
| 400 | 40 | 38 | 37 | 35 | 34 | 22 | 14 | 9,3 | ||||||||||
| 10CrMo9-10 | ||||||||||||||||||
| 63 | 6,3 | 4,9 | 3,7 | 2,8 | 2,1 | 1,6 | 1,2 | |||||||||||
| 100 | 10 | 7,8 | 5,9 | 4,5 | 3,3 | 2,5 | 1,9 | |||||||||||
| 160 | 16 | 12,5 | 9,5 | 7,2 | 5,3 | 4,0 | 3,1 | |||||||||||
| 250 | 25 | 19,5 | 14,9 | 11,3 | 8,4 | 6,3 | 4,9 | |||||||||||
| 320 | 32 | 25 | 20 | 15 | 11 | 8,2 | 6,3 | |||||||||||
| 400 | 40 | 32 | 25 | 18 | 14 | 10 | 7,9 | |||||||||||
| X10CrMoVNb9-1 | ||||||||||||||||||
| 63 | 6,3 | 5,2 | 4,2 | 3,2 | ||||||||||||||
| 100 | 10 | 8,4 | 6,6 | 5,2 | ||||||||||||||
| 160 | 16 | 13,4 | 10,6 | 8,3 | ||||||||||||||
| 250 | 25 | 21 | 16,6 | 13 | ||||||||||||||
| 320 | 32 | 28 | 22 | 17 | ||||||||||||||
| 400 | 40 | 35 | 28 | 22 | ||||||||||||||
| X6CrNiTi18-10 | ||||||||||||||||||
| 63 | 6,3 | 5,7 | 5,3 | 5 | 4,7 | 4,6 | 4,4 | 4,3 | 4,3 | 4,3 | 4,3 | 3,9 | 3,1 | |||||
| 100 | 10 | 9,0 | 8,4 | 7,9 | 7,5 | 7,2 | 7,0 | 6,9 | 6,9 | 6,8 | 6,7 | 6,2 | 5 | |||||
| 160 | 16 | 14,4 | 13,4 | 12,6 | 12,0 | 11,6 | 11,3 | 11,0 | 11,0 | 10,9 | 10,8 | 9,9 | 8 | |||||
| 250 | 25 | 22,4 | 21,0 | 19,7 | 18,8 | 18,1 | 17,5 | 17,3 | 17,3 | 17,2 | 17,1 | 15,5 | 12,5 | |||||
| X10CrWMoVNb9-2 | ||||||||||||||||||
| 320 | 32 | 32 | 26 | 21 | 19 | 16 | 14 | 12 | 10 | |||||||||
| 400 | 40 | 40 | 33 | 26 | 23 | 20 | 17 | 15 | 13 | |||||||||
Materials of main parts
| Pos. | Part identification | Operating temperature (°C) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 450 | 530 | 550 | 560 | 570 | 600 | 650 | |||
| 002 | Body | P250GH P 285 NH 11 416 | 10CrMo9-10 15128 | X10CrMoVNb9-1 | X10CrWMoVNb9-2 | ||||
| 003 | Extender | ||||||||
| 014 | Pressure seal bonnet | ||||||||
| 039 | Segmented ring | ||||||||
| 038 | Spacer ring | ||||||||
| 041 | Pressure seal nut | E335,11 600 | 10CrMo9-10 | ||||||
| 044 | Bolt | 40CrMoV4-7,15 320 | |||||||
| 048 | Nut | 42CrMo4,34Cr4,15 236 | |||||||
| 385 | Insert | P285 NH 12 020 | 10CrMo9-10 15 128 | X10CrMoVNb9-1 | X10CrWMoVNb9-2 | ||||
| 053 | Sealing ring | Expanded graphite | |||||||
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Hotline
Do you need advice on choosing a valve, want to order spare parts or need a service visit? Call or write to us – our engineers and sales staff will be happy to help and propose the most suitable solution.