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DIN 900 Series Spring Loaded Safety Relief Valve

Description

DIN 900 Series Spring Loaded Safety Relief Valve

DIN Standard Safety Valve Features:

Safety valves were first used on steam boilers during the industrial revolution. Early boilers without them were prone to accidental Explosion.
Safety valves also evolved to protect equipment such as pressure vessel (fired or not) and heat exchangers. Safety valve term should be limited to compressible fluid application (gas, vapor, steam).

The two general types of protection encountered in industry are thermal protection and flow protection.

For liquid-packed vessels, thermal relief valves are generally characterized by the relatively small size of the safety valve necessary to provide protection from excess pressure caused by thermal expansion. In this case a small valve is adequate because most liquids are nearly incompressible, and so a relatively small amount of fluid discharged through the relief valve will produce a substantial reduction in pressure.

DIN Standard Safety Valve Specification

Type

Nominal Pressure

Body Material

Nominal Diameter

Working Temp.

901/902/911/912

PN40/16

1.0619+N

DN20/32-DN150/250

-10C~450C

901/911

PN40/16

1.4408

DN20/32-DN100/150

-60C~400C

DN

20/32

25/40

32/50

40/65

50/80

65/100

80/125

100/150

120/200/

150/250

Throat Diameter do

(mm)

18

22

29

36

45

58

72

80

100

125

Orifice Area Ao(mm)

254

398

661

1018

1590

2688

4072

6362

8825

12266

Weight (Kg)

8.5

10

14

20

28

40

53

80

125

165

Safety Valve (Pressure Relief Valve) Dimension


901, 902, 911, 912 Type Safety Valve

DN×DN1

20/32

25/40

32/50

40/65

50/80

65/100

80/125

100/150

120/200/

150/250

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

Vent(with plug)

G3/8”

G1/2”



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Address:
Heyi Industrial Zone,Oubei Town, Zhejiang, China, 325105

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