4592.2494 Leser United States Sales
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Technical Specification
Compact performance safety valve, type 459,
closed spring cover, gas-tight ventilation H4,
for vapors, gases and liquids
V83 thread connection
Order code output, line 1: K7RM33MB1K4XH03K3IP2AJ99X00V83
Order code output, line 2: V67L49MA2H01
E body material: 1.4404/316L
1.4404/316L
Subconnection entry: (V83)
External thread G 1 1/4" according to DIN ISO 228-1
Outlet connection: (V67)
Internal thread G 1 1/2" according to DIN ISO 228-1
Nominal width inlet G 1 1/4"
Nominal width outlet G 1 1/2"
Pressure stage entry PN 160
Pressure stage outlet PN 40
d0 (ASME DIN) [mm] 17.5
Response pressure: 5.50
Pressure unit: bar-g
Response pressure [bar-g] 5.50
Response pressure in psi-g: 79.77
Cold adjustment pressure [bar-g] 5.50
Cold adjustment pressure [psi-g] 79.77
Working temperature: 20
Temperature unit: °C - Celsius
Operating temperature [°C] 20.00
Operating temperature in °F: 68
Plate, metallic/Wst.: (L49)
Made of material: 1.4122
Sealing ring material: (MB1)
Graphite/1.4401 sealing ring
Pressure screw material: (K7R)
Pressure screw material: 1.4104
Spring cover material: (J99)
Spring cover material 1.0619/ WCB/ WCC
Spring material (X00)
standard material
Colouring: (P2A)
1-layer coating system in RAL 5005 in accordance with LID 1608.03
Acceptances: (M33)
Proof of testing the setting pressure (TRB 513 4.2, TRD 504 3.3.4): EN
10204-3.2 (TÜV-Nord)
Material quality certificate for: (H01)
Housing — position 1 with material quality certificate 3.1 in accordance with DIN EN 10204
Documentation: (H03)
LESER CGA Certificate for Global Application Acceptance Test Certificate 3.1 according to DIN
EN 10204
Outflow rate D/G: 0.79
Outflow rate F: 0.52