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Safety valve LESER 438

Safety valve LESER 438
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  • Manufacturer: LESER
  • Nominal inlet: 3/8”-1”, DN15-DN25
  • Response pressure: 5-180 bar
  • Working medium pressure: 40 bar-400 bar
  • Working environment temperature: -29 to 150 °C
  • Material: 1.4104; 1.4404
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  • Dimensions and weight
  • Design pressures and temperatures
  • Throughput (Steam)
  • Throughput (Air)
  • Throughput (Water)
  • Documentation
  • Delivery and payment
Threaded connection

 Standard design Long version
Outlet body size 1 / 2´´ 3 / 4´´ 1 1 / 2´´ 3 / 4´´ 1
Fact. dia. holes d 0 [mm] ten ten ten ten ten ten
-
Weight [kg] 1,2 1.6 1.6 1.4 2.1 2.1
Diameter required for installation [mm] 65 80 80 65 80 80
Internal thread at the entrance
DIN ISO 228-1 center to end surface [mm] Entrance a 45 55 55 45 55 55
Output b thirty 37 37 thirty 37 37
Height [mm] H max. 210 220 220 230 240 240
ISO 7-1 / BS 21 center to end surface [mm] Entrance a 45 55 55 45 55 55
Output b thirty 37 37 thirty 37 37
Height [mm] H max. 210 220 220 230 240 240
ANSI / ASME B.1.20.1 Center to End surface [mm] Entrance a 45 55 55 45 55 55
Output b thirty 37 37 thirty 37 37
Height [mm] H max. 210 220 220 230 240 240
Male inlet thread
DIN ISO 228-1 center to end surface [mm] Entrance a 33 33 36 33 33 36
Output b thirty 37 37 thirty 37 37
ISO 7-1 / BS 21 center to end surface [mm] Entrance a 31 31 34 31 31 34
Output b thirty 37 37 thirty 37 37
ANSI / ASME B.1.20.1 Center to End surface [mm] Entrance a 31 31 34 31 31 34
Output b thirty 37 37 thirty 37 37
Male thread height at the entrance
- Standard design Long version
Inlet thread The size 3 / 8´´ 1 / 2´´ 3 / 4´´ 1 3 / 8´´ 1 / 2´´ 3 / 4´´ 1
DIN ISO 228-1 [mm] H max. 210 212 214 216 230 232 234 236
ISO 7-1 / BS 21 [mm] H max. - 215 216 219 - 235 236 239
ANSI / ASME B.1.20.1 [mm] H max . - 218 218 223 - 238 238 243
Length of the inlet end with an external thread (dimension "c")
Inlet thread The size 3 / 8´´ 1 / 2´´ 3 / 4´´ 1
DIN ISO 228-1 [mm] H max. 12 fourteen 16 eighteen
ISO 7-1 / BS 21 [mm] H max. - 19 twenty 23
ANSI / ASME B.1.20.1 [mm] H max. - 22 22 27

схема LESER 438

Flange connection

 Standard design Long version
Fact. dia. holes d 0 [mm] ten ten
DIN ISO 1092-1

 Flange rating Py40
Center to end. surface [mm] Entrance a 100 100
Output b 100 100
Height [mm] H max. 263 284

 Flange rating ≥ Py160
Center to end. surface [mm] Entrance a 103 103
Output b 100 100
Height [mm] H max. 266 287
ASME B 16.5

 Flange class 150
Center to end. surface [mm] Entrance a 100 100
Output b 100 100
Height [mm] H max. 263 284

 Flange class ≥ 300
Center to end. surface [mm] Entrance a 103 103
Output b 100 100
Height [mm] H max. 266 287
Weight
Net weight (without inlet and outlet flange)
[kg]		 2.4 2.8

конструкция LESER 438

- Standard design Longer design
Fact. dia. holes d 0 [mm] ten ten
Body material: 1.4104 (430)
Base / Housing Entrance Chamber Connection size 3 / 8´´ 1 / 2´´ 3 / 4´´ 1 3 / 8´´ 1 / 2´´ 3 / 4´´ 1
Design pressure PN 320 PN 320
Outlet housing Design pressure PN 160 PN 160
Minimum set pressure p [bar] 5 93
Maximum set pressure p [bar] 10, only H3 93 180
Temperature according to DIN EN min. [° C] -ten -ten
Max. [° C] +150 +150
Body material: 1.4404 (316L)
Base / Housing Entrance Chamber Connection size 3 / 8´´ 1 / 2´´ 3 / 4´´ 1 3 / 8´´ 1 / 2´´ 3 / 4´´ 1
Design pressure PN 320 PN 320
Outlet housing Design pressure PN 160 PN 160
Minimum set pressure p [bar] 5 68
Maximum set pressure p [bar] 10, only H3 68 180
Temperature according to DIN EN min. [° C] -45 -45
Max. [° C] +150 +150
Fact. dia. holes d 0 [mm] ten
Set pressure Bandwidth
[bar] Saturated steam [kg / h] Air 0 ° C and 1013 mbar [m 3 / h at norm.usl.] Water 20 ° C [10 3 kg / h]
0.5 Select type 439
1
2
3
4
5 113 139 3.09
6 131 163 3.39
7 149 186 3.66
eight 168 210 3.91
nine 186 233 4.15
ten 204 257 4.37
12 - 304 4.79
fourteen - 351 5.17
16 - 398 5.53
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 7.57
32 - 775 7.82
34 - 822 8.06
36 - 869 8.3
38 - 916 8.52
40 - 963 8.74
42 - 1010 8.96
44 - 1057 9.17
46 - 1104 9.38
48 - 1151 9.58
50 - 1198 9.78
60 - 1434 10,7
70 - 1669 11.6
80 - 1904 12.4
90 - 2140 13.1
100 - 2375 13.8
110 - 2610 14.5
120 - 2846 15.1
130 - 3081 15.8
140 - 3316 16.4
150 - 3552 16.9
160 - 3787 17.5
170 - 4022 eighteen
180 - 4257 18.5
Fact. dia. holes d 0 [mm] ten
Set pressure Bandwidth
[bar] Saturated steam [kg / h] Air 0 ° C and 1013 mbar [m 3 / h at norm.usl.] Water 20 ° C [10 3 kg / h]
0.5 Select type 439
1
2
3
4
5 113 139 3.09
6 131 163 3.39
7 149 186 3.66
eight 168 210 3.91
nine 186 233 4.15
ten 204 257 4.37
12 - 304 4.79
fourteen - 351 5.17
16 - 398 5.53
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 7.57
32 - 775 7.82
34 - 822 8.06
36 - 869 8.3
38 - 916 8.52
40 - 963 8.74
42 - 1010 8.96
44 - 1057 9.17
46 - 1104 9.38
48 - 1151 9.58
50 - 1198 9.78
60 - 1434 10,7
70 - 1669 11.6
80 - 1904 12.4
90 - 2140 13.1
100 - 2375 13.8
110 - 2610 14.5
120 - 2846 15.1
130 - 3081 15.8
140 - 3316 16.4
150 - 3552 16.9
160 - 3787 17.5
170 - 4022 eighteen
180 - 4257 18.5
Fact. dia. holes d 0 [mm] ten
Set pressure Bandwidth
[bar] Saturated steam [kg / h] Air 0 ° C and 1013 mbar [m 3 / h at norm.usl.] Water 20 ° C [10 3 kg / h]
0.5 Select type 439
1
2
3
4
5 113 139 3.09
6 131 163 3.39
7 149 186 3.66
eight 168 210 3.91
nine 186 233 4.15
ten 204 257 4.37
12 - 304 4.79
fourteen - 351 5.17
16 - 398 5.53
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 7.57
32 - 775 7.82
34 - 822 8.06
36 - 869 8.3
38 - 916 8.52
40 - 963 8.74
42 - 1010 8.96
44 - 1057 9.17
46 - 1104 9.38
48 - 1151 9.58
50 - 1198 9.78
60 - 1434 10,7
70 - 1669 11.6
80 - 1904 12.4
90 - 2140 13.1
100 - 2375 13.8
110 - 2610 14.5
120 - 2846 15.1
130 - 3081 15.8
140 - 3316 16.4
150 - 3552 16.9
160 - 3787 17.5
170 - 4022 eighteen
180 - 4257 18.5

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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Safety valve LESER 438

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