Slide valves

Knife Gate Valves AKO Type A

The knife gate valve is a ni-directional wafer valve for general industrial application.

The nominal widths available range from DN050 to DN1200 with flange connections complying with EN 1092-2 PN10 or alternatively, ANSI B16.5. It is predominantly used in the paper and pulp, chemical, and mining industries, in power station technology and the food industry. However, the knife gate valve is increasingly being used in biogas plants, sewage treatment plants, and in the sugar, steel and animal feed sectors.

Drive variants offered for the knife gate valve include a manually actuated handwheel model with rising or non-rising stem, or alternatively a hand lever drive unit, or double-and single-acting pneumatic cylinders (spring return) and electric actuators.

The structure of the unidirectional knife gate valves encompasses a so-called wafer style cast monoblock body, with raised face and reinforced ribs for larger nominal diameters for extra body strength.

The monoblock body of the knife gate valves is available in either grey cast iron (GG25) or alternatively in stainless steel AISI 1.4408 (CF8M).

Technical data:
Working pressure KGV type A:
DN 50 to DN 250: 10 kg/cm2
DN 300 to DN 400: 6 kg/cm2
DN 450: 5 kg/cm2
DN 500 to DN 600: 4 kg/cm2
DN 700 to DN 1200: 2 kg/cm2

Standard flange connection:
DIN PN 10 and ANSI B16.5 (class 150)
Others available upon request.

Directives:
DIR 98/37/CE (MACHINES)
DIR 97/23/CE (PED) Fluid: Group 1(b), 2 (Cat. I, mod. A)
DIR 94/9/CE (ATEX) Group II, Cat. 3: zones 2 and 22

Areas of application/customer branches:
– pulp and paper
– power plants
– wastewater treatment plants
– chemical plants
– food and beverage
– bulk handling
– mining etc.