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YONGJIA GOOLE VALVE CO.,LTD 
Product Name: ARI 902 DIN Pressure Safety Valve 
Product Model: ari902 
Class: Valve - Safety valve
Product Origin: Wenzhou,China 
Supply Ability: 800 
Price Terms:  
Minimum Order:
Certification(s):  
Expound


900 Series DIN Spring loaded Pressure Safety 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

-10Cé—?50C

901/911

PN40/16

1.4408

DN20/32-DN100/150

-60Cé—?00C

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

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