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Safety valve LESER 481

Safety valve LESER 481
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  • Manufacturer: LESER
  • Nominal inlet: DN15-DN25
  • Response pressure: 0.1-68 bar
  • Working environment temperature: -45 to 150 °C
  • Material: 1.4404
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  • Dimensions and weight
  • Design pressures and temperatures
  • Throughput (Steam)
  • Throughput (Air)
  • Throughput (Water)
  • Documentation
  • Delivery and payment
Fact. dia. holes d 0 [mm] ten ten ten
Dy 15 25 25
Clamp connections Entrance a Output b
PN 16 16 16
Center to end face Outlet G 1 / 2´´ [mm] 40 thirty -
Outlet G 3 / 4´´ [mm] 40 thirty 65
Outlet G 1´´ [mm] 43 33 -
Height - Н4 H max. [mm] 203 193 193
Height - H8 design with two pistons H max. [mm] 231 221 221
Threaded connections Entrance a Output b
PN 16 16 16
Center to End Face (Female) Outlet G 1 / 2´´ [mm] - 39 thirty
Outlet G 3 / 4´´ [mm] - 39 37
Outlet G 1´´ [mm] - 42 37
Center to end face Outlet G 1 / 2´´ [mm] - 39 -
Outlet G 3 / 4´´ [mm] - 39 70
Outlet G 1´´ [mm] - 42 -
Height - Н4 H max. [mm] - 202 202
Height - H8 design with two pistons H max. [mm] - 230 230
Weight
Weight Max. [kg] 1.4 1.4 -

Dimensions - most common designs

Fact. dia. holes d 0 [mm] ten ten
Clamp connections Entrance a Output b Entrance a Output b
- 1 1 - -
Center to end face - [mm] thirty 65 - -
Clamp connection diameter d int. [mm] 23 23 - -
d ext. [mm] 51 51 - -
Height - Н4 H max. [mm] 193 - -
Clamp / threaded connections Entrance a Output b Entrance a Output b
- 15 G1 / 2´´ 25 G1 / 2´´
Center to end face - [mm] thirty thirty 33 37
Clamp connection diameter d int. [mm] 16 - 26 -
d ext. [mm] 34 - 51 -
Height - Н4 H max. [mm] 193 193
- 1 G1 / 2´´ - -
Center to end face - [mm] 33 37 - -
Clamp connection diameter d int. [mm] 23 - - -
d ext. [mm] 51 - - -
Height - Н4 H max. [mm] 193 - -

схема LESER 481

- Vulcanized soft seal O-ring disc
Fact. dia. holes d 0 [mm] ten ten
Body material: 1.4404 (316L)
Minimum set pressure p [bar] 0.1 16
Maximum set pressure p [bar] 16 68
Temperature range - Minimum Maximum Minimum Maximum
EPDM [0C] -45 +150 -45 +150
CR [0C] -40 +100 -40 +100
FKM [0C] -twenty +180 -twenty +180
NBR [0C] -25 +110 -25 +110
FFKM [0C] 0 +250 0 +250
Fact. hole diameter d0 [mm] ten
Set pressure Bandwidth
[bar] Saturated steam [kg / h] Air 00С [m3 / h] Water 200C [103kg / h]
Vulcanized soft seal
1 41 49 1.55
2 63 76 2.19
3 85 104 2.69
4 106 130 3.1
5 127 157 3.47
6 148 183 3.8
7 168 210 4.1
eight 189 236 4.38
nine 209 263 4.65
ten 230 289 4.9
12 271 342 5.37
fourteen 311 395 5.8
16 352 448 6.2
Seat with soft seal and o-ring
eighteen - 445 5.87
twenty - 492 6.18
22 - 539 6.49
24 - 586 6.77
26 - 633 7.05
28 - 681 7.32
thirty - 728 7.75
32 - 775 7.82
34 - 822 8.06
36 - 869 8.3
38 - 916 8.52
40 - 963 8.74
50 - 1198 9.78
60 - 1434 10,7
Fact. hole diameter d0 [mm] ten
Set pressure Bandwidth
[bar] Saturated steam [kg / h] Air 00С [m3 / h] Water 200C [103kg / h]
Vulcanized soft seal
1 41 49 1.55
2 63 76 2.19
3 85 104 2.69
4 106 130 3.1
5 127 157 3.47
6 148 183 3.8
7 168 210 4.1
eight 189 236 4.38
nine 209 263 4.65
ten 230 289 4.9
12 271 342 5.37
fourteen 311 395 5.8
16 352 448 6.2
Seat with soft seal and o-ring
eighteen - 445 5.87
twenty - 492 6.18
22 - 539 6.49
24 - 586 6.77
26 - 633 7.05
28 - 681 7.32
thirty - 728 7.75
32 - 775 7.82
34 - 822 8.06
36 - 869 8.3
38 - 916 8.52
40 - 963 8.74
50 - 1198 9.78
60 - 1434 10,7
Fact. hole diameter d0 [mm] ten
Set pressure Bandwidth
[bar] Saturated steam [kg / h] Air 00С [m3 / h] Water 200C [103kg / h]
Vulcanized soft seal
1 41 49 1.55
2 63 76 2.19
3 85 104 2.69
4 106 130 3.1
5 127 157 3.47
6 148 183 3.8
7 168 210 4.1
eight 189 236 4.38
nine 209 263 4.65
ten 230 289 4.9
12 271 342 5.37
fourteen 311 395 5.8
16 352 448 6.2
Seat with soft seal and o-ring
eighteen - 445 5.87
twenty - 492 6.18
22 - 539 6.49
24 - 586 6.77
26 - 633 7.05
28 - 681 7.32
thirty - 728 7.75
32 - 775 7.82
34 - 822 8.06
36 - 869 8.3
38 - 916 8.52
40 - 963 8.74
50 - 1198 9.78
60 - 1434 10,7

LESER 481 Technical Documentation

Delivery

  • Pickup from a warehouse in Kiev - is free
  • New Mail - at the rates of the delivery service, at the rates of the delivery service, at the rates of the delivery service
  • SAT - at the rates of the delivery service
  • Deliveri - at the rates of the delivery service

Payment

  • Cashless payment with VAT
  • Online Privat24, Visa / MasterCard
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