LESER High Perfomance safety vlave
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Products advantages |
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n Open rapidly with an overpressure of 5 % to the full design lift. |
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n Have a maximum blowdown of minus 10 % for steam/gas service and minus 20 % for liquid service. |
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n Longer lifetime due to hardened discs, partly stellited seats and integrated shielding of the optional bellows. |
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n Are developed in a close cooperation with plant engineers and service specialists. |
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n LESER Nanotightness: Exceeds the tightness requirements of API 527 by 50%. |
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n Are approved by all important approval organizations world-wide which ensures the worldwide applicability e.g. |
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n Offer a large variety of types, materials and options to suit any application. |
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n One design and spring (single trim) for steam, gas and liquid applications reduces the number of spare parts and ensures low cost maintenance management. |
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n High capacity compared to the API requirements to reduce installation costs. |
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Technical specifications |
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Nominal Diameter at Inlet |
DN 20 - DN 400 | 3/4" - 16" |
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Actual Orifice Diameter d₀ |
18 mm - 295 mm | 0.71 in - 11.61 in |
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Actual Orifice Area A₀ |
254 mm² - 68349 mm² | 0.394 in² - 105.942 in² |
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Set Pressure |
0.1 bar - 300 bar | 1.5 psig - 4,350 psig |
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Temperature |
-270 °C to 550 °C | -454 °F to 1,022 °F |
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Body Material |
1.0619, 1.4408, 1.7357 | SA 216 WCB, SA 351 CF8M, SA 217 WC6, SA 352 LCB, SA 351 CF3M, SA 995 Gr 4A CD3MN (Duplex), SA 494 M35-1 (Monel), SA 494 CX2MW (Hastelloy) |
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Valve Connection |
Flange in accordance with ASME B 16.5 or DIN EN 1092 |
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Bellows Material (optional) |
Stainless steel, elastomer |
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Load Type |
Spring-loaded |
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Approvals |
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Industries |
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