BKVi2
6Pages

Catalog excerpts

ADCA TANK BLANKETING REGULATORS BKVi2 (Low pressure vent valve) DESCRIPTION Tank blanketing valves are commonly used in tank storage systems to prevent and protect against explosions (avoiding flammable liquids being vented from the vessel), to control product contamination against external air that may fill the vapour space, to reduce evaporation losses (consequently, production losses), to reduce internal corrosion (caused by air and moisture) and to prevent vacuum condition. The blanketing process consists in covering the stored medium, usually a liquid, with a gas (normally N2). MAIN FEATURES Compact design. Non-rising adjustment knob. FDA / USP Class VI compliant seals. STANDARD SURFACE FINISH Internal movable parts and machined surfaces: ≤ 0,76 µm Ra – SF3. Other surfaces: as casted. Ultrasonic cleaning. OPTIONS: Leakage line connection. Dome-loading. Top cap (adjustment screw with cover). Gauge connection on body. External sensing line connection. Blanketing with vacuum. ATEX version. Air, nitrogen, argon and other gases compatible with the construction. AVAILABLE MODELS: SIZES: REGULATING RANGES: CONNECTIONS: INSTALLATION: CE MARKING – GROUP 2 (PED – European Directive) BKVi2 – low pressure venting valve. 1/2" and 1"; DN 15 and DN 25. 5 to 10 mbar; 10 to 50 mbar; 20 to 200 mbar; 50 to 500 mbar; 5 to 4000 mbar (dome-loading). Flanged EN 1092-1 PN 16. Flanged ASME B16.5 Class 150. Vertical installation recommended, to allow drainage, or horizontal as close to the process as possible in order to prevent long pipe sections and flow restrictions. See IMI – Installation and maintenance instructions. VALSTEAM ADCA CE MARKING – ATEX VERSION (ATEX – European Directive) PN 16 LIMITING CONDITIONS * Maximum allowable pressure Maximum upstream pressure ** Minimum upstream pressure Maximum operating temperature 130 ºC * Other limits on request. Maximum operating conditions may be limited by the valve end connections due to normative restrictions. ** 4000 mbar with dome-loading. Warning: Blanketing valves are no substitute for safety valves or vacuum relief valves. We reserve the right to change the design and material of this product without notice.

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ADCA AIR CAPACITIES (Nm³/h) Seat Ø21 mm SIZE INLET PRESSURE (mbar) OPTIONS LEAKAGE LINE CONNECTION GAUGE CONNECTION EXTERNAL SENSING LINE CONNECTION ATEX COMPLIANT VALSTEAM ADCA We reserve the right to change the design and material of this product without notice.

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Optional dome-loading Optional leakage line connection Optional external sensing line connection Optional gauge connection VALSTEAM ADCA We reserve the right to change the design and material of this product without notice.

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ADCA MATERIALS Optional leakage line connection VALSTEAM ADCA Optional dome-loading We reserve the right to change the design and material of this product without notice.

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Valve body Bottom cover * Plug disc * Valve seal Stem guide Retaining ring Diaphragm support plate Spring cover * Lower diaphragm PTFE (Gylon) * Upper diaphragm Diaphragm plate Lower spring guide * Adjustment spring Upper spring guide Adjustment screw Corrosion resistant steel Adjustment knob Ext. bowed shaft ring Stainless steel 41 * O-ring NBR * Available spare parts; ** Others on request. FDA / USP Class VI seals certificate on request. All valves have a serial number. In case of non standard valves, this number must be supplied if spare parts are ordered. TYPICAL INSTALLATION Blanketing...

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ADCA ORDERING CODES BKVi2 Valve model BKVi2 – A351 CF3M / 1.4409 blanketing low pressure vent valve Regulating range 5 to 10 mbar A Valve seat orifice 2 Seat diameter 21 mm Diaphragm PTFE (Gylon) Valve sealing EPDM FPM / Viton (USP Class VI on request) Adjustment knob, top cap and leakage line connection Stainless steel adjustment knob Top cap (adjustment screw with cover) Stainless steel adjustment knob w/ ISO 228 G 1/4" leakage line connection Stainless steel adjustment knob w/ 1/4" NPT leakage line connection Top cap (adjustment screw with cover) w/ ISO 228 G 1/4" leakage line connection...

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BKVi2 6Pages

Catalog excerpts

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BKVi2
6Pages