LESER GmbH & Co. KG
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- Leser - Model Type 441, 442 ANSI - High ...
Leser - Model Type 441, 442 ANSI -High Performance Safety Valves
Full lift safety valve with rolled in seat , ASME flanged connections. Delivery times: 2 weeks for standard configurations. Carbon steel and stainless steel casting.
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All industries up to 49.3 barg / 715 psig
The optimal solution for:
- Pressure relief within 5% pressure increase
- Common in steam and gas applications up to 49.3 barg / 715 psig
- Nominal sizes up to NPS 16
- High required mass flows
- Easy maintenance
- Set pressure(according to CE): 0.1 - 49 barg | 1.5 - 710 psig
- Set pressure(according to ASME): 1.03 - 49.3 barg | 15 - 715 psig
- Temperature(according to CE): -270 to 450 °C | -454 to 842 °F
- Temperature(according to ASME): -268 to 538 °C | -450 to 1,000 °F
- Capacity: orifice F- to X
- Connections ASME B16.5: NPS 3/4 to NPS 16
- Flange class Inlet DIN EN 1092: PN 10 - PN 40
- Flange class Inlet ASME B16.5: Class 150 - Class 300
- Body material: 1.0619, 1.4408 | SA 216 WCB, SA 351 CF8M
- Narrowest flow diameter d0: 23 - 295 mm | 0.91 - 11.61 in
- Narrowest flow area A0: 416 - 68,347 mm² | 0.644 - 105.938 in²
- Bellows material: Stainless steel and elastomer
- Seat gasket: Metallic, Sealing plate , Soft sealing