INDUSTRY
Type 06850, Type 06855 - O-ring
Safety Valves, angle type, stainless steel, type tested, TÜV-SV.1130. S/G/L

standard safety valve with O-ring valve seal, "cleaned and degreased" closed bonnet, gastight cap or lifting device Inlet: male thread type G (BSPP) acc. to ISO 228/1 Outlet: female thread type G (BSPP) acc. to ISO 228/1

Part No. 06850.X.000002N

Orifice

10

14

18

Part No. 06855.X.000002N

Pmin

3.0 bar

3.0 bar

3.0 bar

with NBR O-ring valve seal

Pmax

15.9 bar

14.9 bar

19.9 bar

Part No. 06850.X.000002F

Orifice

10

14

18

Part No. 06855.X.000002F

Pmin

16.0 bar

15.0 bar

20.0 bar

with FKM O-ring valve seal

Pmax

250.0 bar

200.0 bar

110.0 bar



Available options - on request only:

- Flange-, NPT- or Tri-Clamp connection for in- and outlet











Applications:
Provided as safety device for protection against excessive pressure in gas cylinders and pressure vessels. Approved for gases and liquids.
Working temperature: 0°C / 32°F (273K) up to 70°C / 158°F (343K), suitable for horizontal installation from 20 bar.

 
Type 06850, Type 06855 - O-ring
 

Materials

DIN EN

ASME/ASTM
1 Outlet body 1.4408 A 351 CF8M
2 Inlet body 1.4571 A 276 Grade 316Ti
3 Disc 1.4571 A 276 Grade 316Ti
4 O-ring NBR or FKM
5 Stem 1.4404 A 276 Grade 316L
6 Bonnet 1.4408 A 351 CF8M
7 Spring 1.4571 A 313 Grade 316Ti
8 Cap 1.4408 A 351 CF8M
9 Lifting cap 1.4408 A 351 CF8M
10 Lever 1.4301 A 276 Grade 304
Spare Parts
3 Complete disc 1.4571+NBR or FKM 316Ti + NBR or FKM
4 O-ring + screw NBR or FKM
11 Gasket 1.4404 Graphite 316L Graphite
12 Gasket PTFE
13 Gasket PTFE
14 O-ring FPM (VITON)

 
Type 06850, Type 06855 - O-ring
 

Typ 06850, 06855Technical data
Orifice[mm] 1014
InletGW1/23/413/43/43/4111
OutletGW11111-1/41-1/211-1/41-1/2
Dimension code.X.102410341044143414351436144414451446
HeightH305.0307.0309.0310.5310.5310.5312.5312.5312.5
LengthL153.053.053.055.055.055.055.055.055.0
LengthL244.544.544.548.248.248.248.248.248.2
LengthA114.016.018.016.016.016.018.018.018.0
Weight 06850ca. kg3.23.23.23.43.43.43.43.43.4
Weight 06855ca. kg3.43.43.43.63.63.63.63.63.6
Coefficient of dischargeαw S/G0.840.840.840.700.700.700.700.700.70
Coefficient of dischargeαw L0.610.610.610.540.540.540.540.540.54
Min. set pressurebar-g3.03.03.03.03.03.03.03.03.0
Max. set pressurebar-g250.0250.0250.0200.0200.0200.0200.0200.0200.0
Dimensions in mm.




Type 06850, 06855
Technical data
Orifice
[mm]
18
Inlet
GW
1
1
1-1/4
1-1/4
1-1/2
1-1/2
Outlet
GW
1-1/2
2
1-1/2
2
1-1/2
2
Dimension code
.X.
1846
1847
1856
1857
1866
1867
Height
H
304.0
304.0
304.0
304.0
306.0
306.0
Length
L1
60.0
63.0
60.0
63.0
60.0
63.0
Length
L2
49.0
53.0
49.0
53.0
49.0
53.0
Length
A1
18.0
18.0
20.0
20.0
22.0
22.0
Weight 06850
ca. kg
3.9
4.1
3.9
4.1
4.0
4.2
Weight 06855
ca. kg
4.1
4.3
4.1
4.3
4.2
4.4
Coefficient of discharge
αw S/G
0.76
0.76
0.76
0.76
0.76
0.76
Coefficient of discharge
αw L
0.51
0.51
0.51
0.51
0.51
0.51
Min. set pressure
bar-g
3.0
3.0
3.0
3.0
3.0
3.0
Max. set pressure
bar-g
110.0
110.0
110.0
110.0
110.0
110.0
Dimensions in mm.



Discharge capacities
Calculation of flow rate acc. to AD2000-Merkblatt A2 / DIN EN ISO 4126-1

Medium:
A = Saturated steam in kg/h
B = Air in m³/h at 0°C and 1013,25 mbar
C = Water in kg/h at 20°C

The capacity indicated below is for a fully opened valve.

d0 - orifice
A0 - flow area


Set
pressure
in bar (ü)		GW1/2, 3/4 & 13/4 & 11, 1-1/4 & 1-1/2
d0 (mm)10.014.018.0
A0 (mm²)78.5153.94254.0
MediumABCABCABC
3.0-1944431-3177688-57012003
4.0-2445117-3988878-71513860
5.0-2945721-4809926-86215496
6.0-3446267-56110873-100716975
7.0-3936769-64211744-115318335
8.0-4447236-72612555-130219601
9.0-4947675-80713317-144820790
10.0-5458090-89014037-159821915
15.0-7949908-129817192-232926840
20.0-105411441-172119851-308930992
30.0-157214012-256824313-460937958
40.0-209916180-342828074-615243830
50.0-263418090-430231388-772049003
60.0-317519817-518634384-930853680
70.0-372321404-608137138-1091457981
80.0-427722882-698539703-1253761985
90.0-483524270-789842111-1417465745
100.0-539725583-881444389-1582069301
110.0-593126832-968846555-1738772684
120.0-651328025-1063748626---
140.0-764230270-1248252522---
150.0-818431333-1336854365---
160.0-875832360-1430556148---
180.0-984734323-1608359554---
200.0-1089836180-1780162775---
220.0-1193137946------
240.0-1298339633------
250.0-1352240451------
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