Pressure relief valve for the chemical industry 447B

steelPTFEfor toxic fluids

Product description
Safety valves with conductive PTFE full lining in the inlet and outlet area for potentially explosive atmospheres.

• Cost-effective alternative to safety valves made of nickel-based materials
• Delivery time: 4 weeks

Approvals

• CE
• VdTUEV
• ASME UV (USA)
• EAC (Russia)
• TS (China)
• UKCA (Great Britain)
• CRN (Canada)

Applications & Industries

• Chemistry
• Petrochemical

The optimal solution for

• Chlorine applications
• Acids and alkalis
• Chemical industry intermediates in potentially explosive atmospheres

Technical Features Type 447B
Set pressure (according to CE): 0,1 – 16 bar | 1,5 – 232 psig
Set pressure (according to ASME): 1 – 16 bar | 15 – 232 psig
Temperature (according to CE): -85 to 200 °C | -121 to 392 °F
Temperature (according to ASME): -29 to 200 °C | -20 to 392 °F
Capacity: orifice F+ to P
Connections DIN EN 1092: DN 25 - DN 100
Connections ASME B16.5: NPS 1 - NPS 4
Flange class Inlet DIN EN 1092: PN 10 - PN 16
Flange class Inlet ASME B16.5: Class 150
Body material: 1.0619 + PTFE | SA 216 WCB + Virginal PTFE with conductive pigments
Narrowest flow diameter d₀: 23 - 92 mm | 0.91 - 3.62 in
Narrowest flow area A₀: 416 - 6648 mm² | 0.645 - 10.304 in²
Bellows material: PTFE-TFM with conductive pigments
Seat gasket: Sealing plate

Characteristics / technical specifications

• Set pressure (CE): 0,1 – 16 bar (1,5 – 232 psig)
• Set pressure (ASME): 1 – 16 bar (15 – 232 psig)
• Temperature range (CE): -85 to 200 °C (-121 to 392 °F)
• Temperature range (ASME): -29 to 200 °C (-20 to 392 °F)
• Connections (DIN EN 1092): DN 25 - DN 100
• Connections (ASME B16.5): NPS 1 - NPS 4
• Flange class inlet (DIN EN 1092): PN 10 - PN 16
• Flange class inlet (ASME B16.5): Class 150
• Body material: 1.0619 + PTFE or SA 216 WCB + virginal PTFE with conductive pigments
• Narrowest flow diameter d₀: 23 - 92 mm (0.91 - 3.62 in)
• Narrowest flow area A₀: 416 - 6648 mm² (0.645 - 10.304 in²)
• Bellows material: PTFE-TFM with conductive pigments
• Seat gasket: Sealing plate