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HERA BD

HERA BD
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Type Series Booklet 7328.1/3-10 HERA® BD Bi-directional seal Soft-seated knife gate valve PN 10 DN 50-1200 Epoxy coated Applications • In industrial plants, waste water treatment, process engineering and food processing industry • For water, waste water and solids-laden fluids • Other fluids on request Operating data • Temperature range: --10 to +120 °C • Maximum permissible operating pressure, see following pages Materials • Lamellar graphite cast iron EN-GJL-250, JL 1040 • For further details, see list of materials Description • Intermediate flange model for use as wafer-type or dead-end valve at full operating pressure • Single piece (up to DN 500) or two piece (from DN 600) body with integrated flange seal • Short face-to-face length to EN 558-1/20 (was: DIN 3202/K1) • Non-rising stem with non-rising handwheel • As a standard, valve gate made of 1.4571 up to DN 400 • Confined U-shaped rod seal made of EPDM • Transverse seal with gland packing • Robust yoke for actuator mounting as a standard • Corrosion protection of all steel and cast iron parts with epoxy coating (200 ìm), colour RAL 5015 blue Standard variants • Valve disc made of 1.4571/AISI 316 Ti (from DN 450) • Stem made of 1.4571/AISI 316 Ti • A4 bolts • Seal material made of NBR or viton (U-shaped rod seal and O-rings) • Gland packing made of stainless steel mash with cleaning function • Chain wheel (up to DN 600) • Quick-action lever (up to DN 150) • Gearbox (from DN 400) • Double-acting pneumatic actuators (up to DN 800) • Electric actuators (with rising stem, up to DN 1200) • Position switches, solenoid valves • 3.1. certificate • Larger nominal diameters and further variants on request Notes • Operating Instructions 7328.8 Purchase order data 1 Type: HERA BD 5 Fluid handled 2 PN 6 Operating temperature 3 DN 9 Variants 4 Operating pressure 10 Number of Type Series Booklet The valves satisfy the safety requirements of Annex I of the European Pressure Equipment Directive 97/23/EC (PED) for fluids in Groups 1(b) and 2. The valves comply with the safety requirements of the ATEX Directive 94/9/EC and can be used in potentially explosive atmospheres, group II, category 2 (zones 1+21) and category 3 (zones 2+22). PED 97/23/EC

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HERAR BD 2 Test and operating pressures Nominal pressure Nominal diameter Shell / body pressure test Leak test Permissible operating pressures with water P10, P11 P12 PN DN bar 1) bar 2) bar 3) 10 50-250 15 11 10 6 300-400 9 6.6 6 5 450 7.5 5.5 5 4 500-600 6 4.4 4 2 700-1200 3 2.2 2 1) DIN EN 12266-1 (P10, P11) 2) DIN EN 12266-1 (P12, DN 50-600: leakage rate A, DN 700-1200: leakage rate B) 3) at fluid temperature up to 120 °C Installation instructions HERA® BD is bi-directional, i.e. flowmay pass the valve in either direction. Installation as dead-end valve at full operating pressure...

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HERAR BD 3 Materials Part No. Designation Materials Notes 100 Body EN-GJL-250 JL 1040 Epoxy coated Single piece up to DN 500, two piece from DN 600 166 Yoke Steel 1.0044 / S275JR Epoxy coated 200 Stem Stainless steel, 1.4305 / AISI 303 Non-rising 360 Valve disc Stainless steel, 1.4571 / AISI 316Ti DN 50-400 Stainless steel, 1.4301 / AISI 304 DN 450 and larger 410 U-shaped rod seal Steel cored EPDM 412.1 O-ring EPDM Integrated flange seal 412.2 O-ring EPDM 452 Gland flange EN-GJS-400-15 JS 1030 Epoxy coated 461 Gland packing PTFE impregnated synthetic fibres 544 Stem nut Brass 547 Guiding...

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HERAR BD 5 Gland packing made of PTFE impregnated fibres Your benefits • Reliable sealing to atmosphere • Easy to replace without having to remove the valve from the piping • Readjustable while in operation Stainless steel valve disc polished on both sides, sealed by confined U-shaped rod seal for the entire valve travel Your benefits • Excellent tightness in either flow direction • No danger of deposits • No fluttering of the disc • Long service life Non-rising stainless steel stem, non-rising handwheel Your benefit • Ideal in confined spaces Single piece (up toDN500) or two piece body...

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Subject to technical 7328.1/3-10 01.03.2008 modification without prior notice KSB Aktiengesellschaft Johann-Klein-Strasse 9 • 67227 Frankenthal (Germany) Tel.: +49 6233 86-0 • fax: +49 6233 86-3439 E-mail: valves@ksb.com • www.ksb.com HERA® BD

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