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Safety valve LESER 483

Safety valve LESER 483
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  • Nominal inlet: DN25-DN40
  • Response pressure: 0.1-16 bar
  • Working environment temperature: -45 to 150 °C
  • Material: 1.4435 (BN2)

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  • Dimensions and weights
  • Design pressures and temperatures
  • Throughput (Steam)
  • Throughput (Air)
  • Throughput (Water)
  • Technical documentation
  • Delivery
  • Payment
Fact. dia. holes d 0 [mm] 13 25 13 25
Welded connections Entrance a Output b
PN 16 16 16 16
Center to end face - [mm] - - 81.5 91.5
Height - Н4 Nmax. [mm] - - - -
Height - H8 design with two pistons Nmax. [mm] - - - -
Clamp connections Entrance a Output b
PN 16 16 16 16
Center to end face - [mm] 29 44 52 60
Height - Н4 Nmax. [mm] 206 303 - -
Height - H8 design with two pistons Nmax. [mm] 234 311 - -
Threaded connections Entrance a Output b
PN 16 16 16 16
Center to end face - [mm] 40 48 70 78
Height - Н4 Nmax. [mm] 217 304 - -
Height - H8 design with two pistons Nmax. [mm] 245 312 - -
Flange connections Entrance a Output b
PN 16 16 16 16
Center to end face - [mm] 45 51 76 82
Height - Н4 Nmax. [mm] 222 310 - -
Height - H8 design with two pistons Nmax. [mm] 250 318 - -
Weight Entrance a Output b
Weight Max. [kg] 1.6 3.7 -

Dimensions - most common designs

Fact. dia. holes d 0 [mm] 13 25
Clamp connections Entrance a Output b Entrance a Output b
- 1 1 1 / 2´´ 1 1 / 2´´ 2´´
Center to end face - [mm] 29 52 44 60
Clamp connection diameter d int. [mm] 23 36 36 49
d ext. [mm] 51 51 51 64
Height - Н4 H max. [mm] 206 303
- - - 25 25 40 40
Center to end face - [mm] 29 52 44 60
Clamp connection diameter d int. [mm] 26 26 38 38
- d ext. [mm] 51 51 51 51
Height - Н4 H max. [mm] 206 303
Threaded connections Entrance a Output b Entrance a Output b
- 25 25 40 40
Center to end face - [mm] 40 70 48 78
Height - Н4 H max. [mm] 217 304
Flange connections Entrance a Output b Entrance a Output b
- 25 25 40 40
Center to end face - [mm] 45 76 51 82
Height - Н4 H max. [mm] 222 310

Размеры клапанов

Fact. dia. holes d 0 [mm] 13 25
Body material: 1.4404 (316L)
Minimum set pressure p [bar] 0.3 0.1
Maximum set pressure p [bar] 16 16
Temperature range
Minimum Maximum Minimum Maximum
EPDM [° C] -45 +150 -45 +150
CR [° C] -40 +100 -40 +100
FKM [° C] -twenty +180 -twenty +180
NBR [° C] -25 +110 -25 +110
FFKM [° C] 0 +250 0 +250
Fact. hole diameter d 0 13 25
Set pressure [bar] Throughput [kg / h]
1 88 195
2 142 320
3 191 448
4 239 559
Maximum temperature for EPDM soft seal
5 286 669
6 332 779
7 378 886
eight 425 995
nine 471 1104
ten 518 1213
12 611 1430
fourteen 701 1643
16 794 1860
Fact. hole diameter d 0 13 25
Set pressure [bar] Throughput [m 3 / h]
1 105 233
2 171 386
3 234 547
4 293 687
5 353 827
6 413 967
7 472 1106
eight 532 1246
nine 592 1386
ten 651 1526
12 771 1805
fourteen 890 2084
16 1009 2364
Fact. hole diameter d 0 13 25
Set pressure [bar] Throughput [10 3 kg / h]


1 2.83 6.81
2 4.01 9.63
3 4.91 11.8
4 5.66 13.6
5 6.33 15.2
6 6.94 16.7
7 7.49 eighteen
eight 8.01 19.3
nine 8.5 20.4
ten 8.96 21.5
12 9.81 23.6
fourteen 10.6 25.5
16 11.3 27.2

Safety valve LESER 483

  • Pickup from a warehouse in Kiev
  • New Mail
  • SAT
  • Deliveri
  • Courier in Kiev
  • Cashless payment with VAT
  • Online Privat24, Visa / MasterCard
Safety valve LESER 483

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