Text from page 2 of catalogue Knife gate valves
Page 2 of catalogue Knife gate valves of Erhard GmbH & Co. KGERU® Knife Gate valves K1
Versatile and Reliable Isolating and Control valves
➬ Face-to-face dimension to EN 558-1, basic series 20 (former DIN 3202, part 3, series K1). ➬ Wafer type and end-of-line to be used for up to 10 bars without need of counter-flange. ➬ Full flange design. ➬ Any position of installation possible for technically pure flow media. ➬ Leaktight in any flow direction. ➬ High grade standard corrosion protection: - EKB epoxy coating with an average coat thickness of 250 µm.
- Body components of Lamellar cast iron EN-JL1040 - Gate, stem, and connecting elements of stainless steel. - Stud Bolts of zinc-coated steel incl. organic cover coat. - Stem nut of brass. - Transverse seal profile of elastomer with incorporated guide tapes of PTFE-bronze. - U-shaped sealing element.
Numerous Fields of Application
➬ Sewage Treatment Plants Untreated waste water, untreated sludge, digested sludge, feces with suspended matter, air and return sludge flow control, etc. ➬ Power Stations, Steel Industry, Mining Scale-forming water, coalwater mixtures, coal dust, etc. ➬ Sugar Industry Beet washing plants, syrups, juices, etc. ➬ Chemical Industry Viscous pastes, colloids, granulated materials, swelling agents, chemically contaminated waste waters, etc. ➬ Food Industry, Breweries Washing and rinsing equipment, conveying systems for grain, vegetable, mash, etc.
Scope of Supply
Size DN Pressure rating PN Hydr. test pressure in bars on body 17 6 Hydr. test pressure in bars on seat 11 4,4
DN 350-600 Max. admissible working pressure in bars at working temperature of up to 70° C 10 4
50 - 350 400 - 600
Flange connecting dimensions B DN 50 - 150, PN 16, GI, type 21, EN 1092-2, (DIN 2533, PN16) partially with threated holes Flange connecting dimensions B DN 200 - 600, PN 10, GI, type 21, EN 1092-2, (DIN 2532, PN10) partially with threated holes Bolt holes off raised face There are separate documents available for ECO Knife Gate Valves made of stainless steel.