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Brand Name : LESER
Model Number : Type 821
Place of Origin : Germany
MOQ : 1 set
Payment Terms : T/T, D/A, L/C, D/P, Western Union
Supply Ability : 50 SETS/MONTH
Delivery Time : 6~8 WEEKS
Packaging Details : Carton
Nominal Diameter at Inlet : DN 25 - DN 200 | 1" - 8"
Orifice : API Standard as well as Extra Orifice: 1 D 2 - 8 T 10 / 1 G 2 - 8 T+ 10
Actual Orifice Diameter d₀ : 11 - 180 mm | 0.433 - 7.087 in
Actual Orifice Area A₀ : 95 - 25446.9 mm² | 0.147 - 39.443 in²
Pressure : 2.5 - 426 bar | 36 - 6170 psig
Flange Rating Inlet : PN 10 - PN 400 | CL150 - CL2500
Temperature (in accordance with DIN EN) : -45 to 200 °C (Special: -162 to 300 °C) | -49 to 392 °F (Special: -259.6 to 572 °F)
Temperatur (nach ASME) : -45 to 200 °C (Special: -162 to 300 °C) | -49 to 392 °F (Special: -259.6 to 572 °F)
Body Material : 1.0619, 1.4408 (Special: Hi Alloy) | SA 216 WCB, SA 351 CF8M, SA 352 LCB (Special: Hi Alloy)
Valve Connection : Flange acc. to DIN EN 1092 or acc. to ASME B 16.5 or acc. to JIS 2220
Load Type : Controlled by process medium
Specials : Pilot action type: Modulate Action | Open: max. 10% opening pressure tolerance | Closed: max. 7% closing pressure tolerance | Application: Steam, gasses and liquids
Approvals : ASME Sec. VIII Div. 1, PED/ DIN EN ISO 4126-4, PED/ AD 2000-Merkblatt A2, AQSIQ, EAC, TSSA
Classification societies : LR, RINA, DNV GL, BV
Type 821 High Efficiency Modulate Action Pilot Operated Safety Valve
Solutions for high plant efficiency
 Pilot operated safety valves
 Highest blow-off capacity of all series
 Tightness right up to set pressure
 Operating pressures up to 96% of the set pressure
 Back pressures up to 70% of the set pressure
 Backflow preventer integrated as a standard component
Integrated Piping prevents damage and freezing
 Supplementary Loading System
Equipment that enables the following safety valve characteristics:
 Tightness right up to set pressure
 Operating pressures up to 97% of the set pressure
 Low loss of medium due to short opening times
 Function test and valve adjustment possible during operation
 Suitable for all media temperatures
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                        Type 821 High Efficiency Modulate Action Pilot Operated Safety Valve Images |