4 Valve Description
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4.7.2.3 Design details
Design
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Swing check valve to API 602
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Tested to API 598
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Body made of forged steel
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Bolted cover
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Reduced bore
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Fully confined cover gasket
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Seat ring ST6(HF) swaged
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Solid disc
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The valves satisfy the safety requirements of Annex I of the European Pressure
Equipment Directive 97/23/EC (PED) for fluids in Groups 1 and 2.
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The valves do not have a potential internal source of ignition and can be used in
potentially explosive atmospheres, Group II, category 2 (zones 1+21) and
category 3 (zones 2+22) to ATEX 2014/34/EU.
Variants
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Seal-welded body/cover joint
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Full bore
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Butt weld ends
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Version in compliance with TA-Luft (German Clean Air Act) to VDI 2440 for
temperatures up to 400 °C
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NACE standard
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Other flanged end designs or butt weld ends to ASME B16.25
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Other trims
Summary of Contents for ECOLINE FYC
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