Type 06420

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Type 06420

Cryogenic Safety Valves, angle type, bronze, PN40
d0=7.0 & 10.5mm up to PN50
type tested TÜV-SV.1111. S/G

Standard safety valve, with PCTFE valve seal, (D07 = Metal to metal seated), closed bonnet "cleaned and degreased for oxygen service"

Part No. 06420.X.0000
Inlet: male thread type G (BSPP) acc. to ISO 228/1, Outlet: female thread type G (BSPP) acc. to ISO 228/1
Part No. 06420.X.2000
Inlet: male thread type R (BSPT) acc. to ISO 7/1, Outlet: female thread type G (BSPP) acc. to ISO 228/1
Part No. 06420.X.5000
Inlet: male thread NPT acc. to ANSI B 1.20.1, Outlet: female thread type G (BSPP) acc. to ISO 228/1
Part No. 06420.X.6000
Inlet: male thread NPT acc. to ANSI B 1.20.1, Outlet: female thread NPT acc. to ANSI B 1.20.1


Applications:
Provided as safety device for protection against excessive pressure in stationary and moveable gas cylinders and pressure vessels. Approved for air gases, vapours and cryogenic liquefied gases incl. LNG.
Working temperature: -196°C / -321°F (77K) up to +185°C / +365°F (458K), with PCTFE-seal up to +150°C / 302°F (423K), suitable for horizontal installation
 		  
Type 06420
 

Materials

DIN EN

ASME/ASTM
1 Outlet body CC491K SB62 UNS C83600
2 Inlet body 1.4301 SA 479 Grade 304
3 Valve seal PCTFE
4 Disc CC493K B 505 UNS C93200
5 Guide plate CC493K B 505 UNS C93200
6 Stem CW453K B 103 UNS C52100
7 Spring 1.4571 A 313 Grade 316Ti
8 Bonnet 1.4301 A 276 Grade 304
9 Spring clamp CW614N B 455 UNS C38500
10 Thread ring CW614N B 455 UNS C38500
11 Cap CW614N B 455 UNS C38500
Essential: Valves are delivered at a set pressure,
therefore when ordering please confirm set
pressure, medium and temperature.
Standard marking acc. to Pressure Equipment
Directive 97/23/EG (PED).
 
Type 06420
 

 

Type 06420 Technical data
Nominal size GW 1/2 3/4 1/2 3/4 3/4 1 1 1-1/4 1-1/4
Orifice d0 7.0 7.0 10.5 10.5 14.0 14.0 18.0 18.0 23.0
Dimension code .X. 0704 0706 1004 1006 1406 1410 1810 1812 2312
Set pressure range bar 0.4-50.0 0.4-50.0 0.4-50.0 0.4-50.0 0.4-40.0 0.4-40.0 0.4-40.0 0.4-40.0 0.4-10.0
Outlet GA 1 1 1 1 1-1/4 1-1/4 1-1/2 1-1/2 1-1/2
Height H 140 140 140 140 159 159 186 187 187
Length A1 14 16 14 16 16 18 18 20 20
Length L1 36 36 36 36 50 50 48 48 48
Length L2 36.5 36.5 36.5 34.5 44 44 50.5 51.5 52
Wrench size across flats S1 30 30 30 30 41 41 50 50 50
Wrench size across flats S2 41 41 41 41 50 50 58 58 58
Weight ca. kg 0.78 0.80 0.76 0.79 1.25 1.31 1.87 1.99 1.90
Coeff. of disch. from 3.0 bar αw 0.78 0.78 0.69 0.69 0.66 0.66 0.66 0.66 0.54
Dimensions in mm.



 

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

Medium:
Air in m³/h at 0°C and 1013.25 mbar

The capacity indicated below is for a fully opened valve.

d0 - orifice
A0 - flow area
 

 

Set
pressure
in bar (ü)		 GW 1/2 & 3/4 1/2 & 3/4 3/4 & 1 1 & 1-1/4 1-1/4
d0 (mm) 7.0 10.5 14.0 18.0 23.0
A0 (mm²) 38.48 86.6 153.9 254.5 415.3
Medium Air
0.4   24 43 77 122 157
0.5   27 49 87 141 178
1.0   40 77 130 216 287
1.5   54 101 178 290 375
2.0   65 126 219 362 472
3.0   88 175 299 494 660
4.0   110 220 375 620 829
5.0   133 266 452 748 999
6.0   156 311 529 874 1168
7.0   178 356 605 1001 1337
8.0   202 402 684 1130 1510
9.0   224 447 760 1257 1680
10.0   247 493 839 1387 1853
12.0   293 583 992 1641 -
14.0   338 674 1146 1895 -
16.0   384 764 1300 2149 -
18.0   429 855 1453 2403 -
20.0   479 954 1623 2682 -
22.0   525 1045 1778 2939 -
24.0   571 1136 1933 3195 -
26.0   617 1228 2088 3452 -
28.0   662 1319 2243 3708 -
30.0   715 1423 2421 4002 -
32.0   761 1516 2577 4261 -
34.0   807 1608 2734 4520 -
36.0   854 1700 2891 4779 -
38.0   900 1792 3047 5038 -
40.0   954 1900 3231 5342 -
42.0   1001 1993 - - -
44.0   1048 2086 - - -
46.0   1094 2179 - - -
48.0   1141 2272 - - -
50.0   1198 2385 - - -

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