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

standard safety valve with soft 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.000001L (Pmax 150.0 bar)

with gastight cap
Part No. 06855.X.000001L (Pmax 150.0 bar)
with lifting device

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: -270°C / -454°F (3K) up to +300°C / +572°F (573K) Pressure-temperature must be observed, suitable for horizontal installation from 20 bar

 
Type 06850, Type 06855 - Sealing plate
 

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 Sealing plate VESPEL
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
2 Inlet body 1.4571 316Ti
3.1 Split pin 1.4571 316Ti
4 Sealing plate VESPEL
11 Gasket 1.4404 Graphite 316L Graphite
12 Gasket PTFE
13 Gasket PTFE
14 O-ring FPM (VITON)

 
Type 06850, Type 06855 - Sealing plate
 

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 L0.680.680.68******
Min. set pressurebar-g0.50.50.50.50.50.50.50.50.5
Max. set pressurebar-g150.0150.0150.0120.0120.0120.0120.0120.0120.0
Min. temperature°C-270-270-270-270-270-270-270-270-270
Max. temperature°C+300+300+300+300+300+300+300+300+300
Dimensions in mm. * 0.20-11.50 bar=0.50 / 11.51-74.99 bar=0.49 / 75.00-120.00 bar=0.46




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
0.50
0.50
0.50
0.50
0.50
0.50
Min. set pressure
bar-g
0.5
0.5
0.5
0.5
0.5
0.5
Max. set pressure
bar-g
110.0
110.0
110.0
110.0
110.0
110.0
Min. temperature
°C
-270
-270
-270
-270
-270
-270
Max. temperature
°C
+300
+300
+300
+300
+300
+300
Dimensions in mm.

Pressure-Temperature Rating



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
0.5-562075-963035-1525018
1.0-882852-1464110-2426794
2.0-1434033-2365813-4079608
3.0-1944940-3177119-57011768
4.0-2445704-3988220-71513588
5.0-2946377-4809190-86215192
6.0-3446986-56110068-100716642
7.0-3937545-64210874-115317976
8.0-4448066-72611625-130219217
9.0-4948556-80712330-144820383
10.0-5459018-89012997-159821485
15.0-79411045-129715590-232826298
20.0-105412754-172118013-308930385
30.0-157215620-256822062-460937213
40.0-209918037-342825475-615242970
45.0-235519131-384727020-690445577
50.0-263420166-430228481-7720-
60.0-317522091-5186--9308-
65.0-343622993-5612--10072-
70.0-3723--6081--10914-
80.0-4277--6985--12537-
90.0-4835--7898--14174-
100.0-5397--8814--15820-
110.0-5931--9688--17387-
120.0-6513--10637----
140.0-7642-------
150.0-8184-------
*not suitable for water steam!

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