INDUSTRY
Type 06820
Safety Valves, angle type, stainless steel, type tested, TÜV-SV.1130. S/G/L

Standard safety valve Metallic or PEEK seal, "cleaned and degreased for oxygen service" closed bonnet, gastight cap Inlet / Outlet: male / female thread type G (BSPP) acc. to ISO 228/1

Pmax 550.0 bar (S/G/L): metallic seal, max. Temp. -270°C (3K) up to +400°C (673K)

Part No. 06820.X.000000M
Part No. 06820.X.000000H (Pmax 550.0 bar) stellited version


Pmax 1200.0 bar (S/G): PEEK seal, max. Temp. -60°C (213K) up to +85°C (358K)
Part No. 06820.X.000001W
Part No. 06820.0423.503001W with inlet 13/16''-16 UN


Available options - on request only:

- Flange- or NPT- connection for in- and outlet
- Inlet: Cone & thread connection for d0 6mm - 9M 13/16''-16 UN or 12M 3/4'' - 14NPS
- Special materials such as Duplex for medium wetted parts.


Applications:
Provided as safety device for protection against excessive pressure in gas cylinders and pressure vessels. Approved for gases, vapours and liquids.
Working temperature: -270°C / -454°F (3K) up to +400°C / +752°F (673K) Pressure-temperature must be observed, suitable for horizontal installation up to 300 bar

 
Type 06820
 

Materials

DIN EN

ASME/ASTM
1 Outlet body 1.4404 A 276 Grade 316L
2 Inlet body 1.4404 A 276 Grade 316L
3 Disc 1.4571 / PEEK A 276 Grade 316Ti
5 Stem 1.4404 A 276 Grade 316L
6 Bonnet 1.4404 A 276 Grade 316L
7 Spring 1.4571 A 313 Grade 316Ti
8 Cap 1.4404 A 276 Grade 316L
Spare Parts
2 Inlet body 1.4404 A 276 Grade 316L
3 Disc 1.4571 / PEEK 316Ti
3.1 Split pin 1.4310 301
11 Gasket Graphite
12 Gasket Graphite

 
Type 06820
 

Type 06820Technical data
Nominal size GW 1/23/41/23/413/16'' - 16 UN
Orificed0 6.06.04.04.04.0
Dimension code.X.06230633042304330423
Set pressure rangebar30-40030-550260-400260-1200260-1200
OutletGA3/43/43/43/43/4
HeightH1 247247247247247
LengthL14545454545
LengthL22929292929
LengthA11616161616
Weight 06820ca. kg2.92.92.92.92.9
Coeff. of discharge gases, vapoursαw0.520.520.660.660.66
Coeff. of discharge fluidsαw0.420.42---
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
D = Flow Hydrogen in m³/h at 20°C
E = Flow Hydrogen 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, 13/16''
d0 (mm)6.0
A0 (mm²)28.27
MediumABC
30.02543503473
40.03364684011
60.05037084912
80.06709535672
100.084512036341
120.0103214516947
140.0123017037503
160.0143719528021
180.0168821948508
200.0221524298968
220.0-26599406
240.0-28939824
260.0-313310225
280.0-337410611
300.0-361410983
320.0-385411344
340.0-409411693
360.0-433412032
380.0-457512361
400.0-481512683
420.0-505512996
440.0-529513302
460.0-553513601
480.0-577613893
500.0-601614180
520.0-625614460
550.0-661614872

Set
pressure
in bar (ü)		GW1/2, 3/4, 13/16''
d0 (mm)4.0
A0 (mm²)12.56
MediumBDE
26018656044543
30021576941624
40028479142822
5003481112811014
6004065133601201
7004609153791382
8005119173421559
9005600192511730
10006058211081897
11006495229172060
12006914246822218
Pressure-Temperature Rating

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