Comprehensive Solution For Steam And Heat System!

DIN Standard safety relief valve

TECHNICAL SPECIFICATION
Design standard: DIN 3320-1999
Face to face dimension: DIN 3202-1999
Flange standard: DIN 2543-2545
Test & inspection: DIN 3230


Model

35.901/902/91/912

55.901/911

Nominal pressure

PN40/16

PN40/16

Body material

Carbon Steel 1.0619+N

Stainless steel 1.4408

Nominal diameter

DN20/32~DN150/20

DN20/32~DN100/150

Working temperature

-10℃~450℃

-60℃~400℃


DN

20 32

25 40

32 50

40 65

50 80

65 100

80 125

100 125

125 200

150 250

d0(mm) Throughflow aperture

18

22

29

36

45

58

72

80

100

125

A0(mm) Throughflow area

254

398

661

1018

1590

2688

4072

6362

8825

12266

Weight(Kg)

8.5

10

14

20

28

40

53

80

125

165


DNⅹDN1

20ⅹ32

25ⅹ40

32ⅹ50

40ⅹ65

50ⅹ80

65ⅹ100

80ⅹ125

100ⅹ150

125ⅹ200

150ⅹ250

D

PN16

105

115

140

150

165

185

200

220

250

285

PN40

235

220

300

K

PN16

75

85

100

110

125

145

160

180

210

240

PN40

190

220

250

b

20

20

20

21

22

24

26

28

31

34

D1

PN16

140

150

165

185

200

220

250

285

340

405

K1

100

110

125

145

160

180

210

240

295

355

b1

19

19

20

20

20

20

22

22

27

29

L

85

100

110

115

120

140

160

180

200

220

L1

95

105

115

140

150

170

195

220

250

285

≈H

298

311

315

355

405

555

580

690

845

890


Performance parameter

Nominal pressure

PN

Test pressure

Strength test

1.5*design pressure

Seal test

1.1*design pressure

Gas seal test

0.6*design pressure

Max outlet pressure

PN

Outlet pressure range

0.2-PN


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