KRAFT Slide Valves
KRAFT slide valves from Germany shut off and dose bulk solids under silos, hoppers and in pipelines; sizes DN 80 to DN 800, with versions pressure-tight to 5 bar and rated to 270 °C.
Product Overview
KRAFT slide valves use a flat plate that slides across the flow to shut off bulk solids; the 450 F-DK also handles liquids and gases. They have a low installation height and come in wafer or lug versions.
The 430 DBS and 440 DBS E have two counter-moving half-moon plates that open an elliptical outlet, for dosing bulk solids from a 4–20 mA or 0–1 bar control signal.
Technical Data
- Nominal size
- DN 80 – DN 800 (depending on series)
- Installation
- Wafer or lug (420 F-EP U lug only)
- Media
- Bulk solids; 450 F-DK also liquids and gases
- Tightness
- Product-tight; 410 F-EP pressure-tight to 3 bar; 450 F-DK pressure- and vacuum-tight both sides (-0.8 to +5 bar)
- Temperature
- Up to +270 °C (450 F-DK)
- Body
- Cast aluminium EN-AC 46200/51100; 450 F-DK: EN-AW 2007, S235JR steel, stainless 1.4301/1.4571
- Slide plate
- Steel 1.0038, Hardox, stainless 1.4301/1.4404/1.4571 (by series)
- Seal
- PTFE packing (410), NBR/FKM/glass fibre (450), PUR/NBR/EPDM/CSM/FKM (430)
- Flange drilling
- PN 6, PN 10, TW standard (430, 440) or special
- Actuation
- Pneumatic with blocking-air logic, electric (430, 440), handwheel or lever; positioner for dosing series
Reference data as published by the manufacturer. Contact Ha Thanh for help choosing the right model.
Models and Versions
- 410 F-EPSingle gate valve, DN 150–300, product- and pressure-tight to 3 bar, identical inlet and outlet
- 420 F-EP ULug type, DN 150–500, round inlet, angled outlet for a hopper; 3-bar pressure-tight version 421 F-EP AU
- 450 F-DKFlat slide valve, DN 150–800, -0.8 to +5 bar, up to +270 °C
- 430 DBSDouble-plate dosing slide valve, DN 80–300
- 440 DBS ENear-linear dosing, DN 150–300, stainless cassette
Documents
Need a catalogue, drawing or datasheet for this product? Contact Ha Thanh for documents.
