HERA BD - KSB - #1

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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