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- Wafer style Knife Gate Valve Type A
Wafer style Knife Gate Valve Type A
Wafer style Knife Gate Valve Type A
- Sizes: Available from DN 50 to DN 1200, with larger sizes on request.
- Working Pressure: Ranges from 10 kg/cm² for DN 50 to DN 250, decreasing to 2 kg/cm² for DN 700 to DN 1200.
- Flange Connections: Standard DIN PN 10 and ANSI B16.5 (class 150), with additional options available.
- Directives: Complies with DIR 98/37/CE (MACHINES), DIR 97/23/CE (PED), and DIR 94/9/CE (ATEX).
- Body: Cast monoblock with reinforced ribs to prevent clogging.
- Gate: Stainless steel with a polished, beveled edge for cutting through solids.
- Seat: Mechanically locked with a stainless steel retainer ring, available in EPDM, Viton, and PTFE.
- Packing: Long-life braided fiber with an EPDM o-ring for a tight seal.
- Stem: Stainless steel for corrosion resistance, with a protector for rising stem actuators.
- Actuators: Interchangeable, with manual and automatic options.
- Coating: Epoxy coating for corrosion resistance, standard color RAL-5015 blue.
- Bonnet: Ensures tight sealing for hazardous gases or fluids.
- V-port and Flush Ports: For specific fluid control and cleaning of trapped solids.
- Materials: Available in special alloys like AISI 317, Hastelloys, and Titanium.
- Surface Treatments: Options for abrasion, corrosion, and adherence resistance.
- Seats and Seals: Various materials with temperature limits, e.g., EPDM up to 120°C, Viton up to 200°C.
- Packing Materials: Include PTFE and graphite, with temperature limits up to 1200°C.
- Recommended for valves larger than DN 350 and pressures over 3.5 kg/cm².
- Components include stem, yoke, and bevel gear actuator with a standard ratio of 4:1.
- Available sizes range from DN 200 to DN 1200.
- Optional features include locking device, extension, chainwheel, and non-rising stem.
- Standard pneumatic actuator is a double-acting on-off cylinder with aluminum jacket and stainless steel piston rod.
- Available for DN 50 to DN 1000 with supply pressure between 3.5 kg/cm² and 10 kg/cm².
- Options include hard anodized jacket, manual override, and fail-safe system.
- Instrumentation options include positioners and solenoid valves.
- Consists of aluminum jacket, ductile iron or carbon steel spring cap, and steel spring.
- Available for DN 50 to DN 300 with supply pressure between 5 kg/cm² and 10 kg/cm².
- Option for fail open configuration.
- For DN 250 and larger, includes a double-acting pneumatic cylinder and volume tank.
- Supply pressure ranges from 3.5 kg/cm² to 10 kg/cm².
- Options for pneumatic or electric fail-safe systems.
- Includes electric actuator, rising stem, and motor support yoke.
- Standard motor features manual emergency operation and limit switches.
- Available for DN 50 to DN 1200 with various torque specifications.
- Details provided for both DIN PN10 and ANSI B16.5, class 150 standards.
- Includes specifications for bolt sizes and configurations for different DN sizes.
- AKO Armaturen & Separationstechnik GmbH, Adam-Opel-Str. 5, 65468 Trebur-Astheim, Germany.
- Tel: +49 6147 9159-0, Fax: +49 6147 9159-59, Email: [email protected], Web: www.pinch-valve.com
Catalog excerpts
AIKIO Wafer style Knife Gate Valve Type A Datasheet AKO Armaturen & Separationstechnik GmbH Tel.: +49 6147 9159-0 65468 Trebur-Astheim E-Mail: [email protected]
Open the catalog to page 1
Al Kl O Wafer style Knife Gate Valve, Type A Datasheet Technical changes kept in reserve The A model knife gate is an uni-directional wafer valve designed for general industrial service applications. The design of the body and seat assures non-clogging shut off on suspended solids in industries such as: > Pulp and Paper > Mining > Bulk handling > Wastewater treatment plants > Power plants > etc. > Food and Beverage > Chemical plants Sizes DN 50 - DN 1200 larger diameters on request Standard flange connection > DIN PN 10 and ANSI B16.5 (class 150) > other flange connections are available on request...
Open the catalog to page 2
Al Kl O Wafer style Knife Gate Valve, Type A Datasheet Technical changes kept in reserve Design Features > BODY: Wafer style cast monoblock with raised face, with reinforced ribs in larger diameters for extra body strength. Internal cast-in gate wedges and guides allows for tighter shut-off. Full port design for greater flow capacity and minimal pressure drop. Internal design avoids any build up of solids that would prevent valve from closing. > GATE: Stainless steel gate as standard. Gate is polished on both sides to avoid jamming and seat damage. Bottom of the gate edge is machined to a bevel...
Open the catalog to page 3
Al Kl O Wafer style Knife Gate Valve, Type A Datasheet Technical changes kept in reserve Other options > Bonnet (Fig.1): Assures tight sealing to atmosphere for using with hazardous gas or fluids. Reduces packing maintenance. > V-port: 60 degree and pentagonal port design. Selection depends on type of fluid control desired. > Flush ports (Fig.2): Allow for cleaning of solids trapped within the body cavities that can obstruct the flow or prevent the valve from closing. Purging can be made with air, steam, liquids, etc. depending on the process. > Other materials of construction: Special alloys...
Open the catalog to page 4
Al Kl O Wafer style Knife Gate Valve, Type A Datasheet Technical changes kept in reserve Actuator types Manual > Handwheel (rising & non-rising stem) > Chainwheel > Lever > Bevel Gear > Other (square nut...) Accessories > Mechanical Stops > Actuator manual override > Positioners > Proximity Switches > Stem extensions Automatic > Electric > Pneumatic > Hydraulic > Locking device > Solenoid valves > Limit Switches > Floor stands Wide range of valve extensions available. Standard handwheel (rising stem) Handwheel (non-rising stem) Pneumatic cylinder Electric Lever Please consult our technical department....
Open the catalog to page 5
Wafer style Knife Gate Valve, Type A Datasheet Al Kl O Technical changes kept in reserve Temperature chart Silicone (6) 250 Food service, high temperature PTFE (9) 250 Corrosion resistance NOTE: all types include an elastomere O-ring (same material as seal), excluding G, B and J. More details and other materials under request. > TYPE "B" SEAT (metal/metal) For applications with: • High temperature • High density media application • When full tightness is not required • Replaceable design without dismantling • the valve DEFLECTION CONE "C" • Deects the media away from any internal exposed parts...
Open the catalog to page 6
Al Kl O Wafer style Knife Gate Valve, Type A Datasheet Technical changes kept in reserve Valve extensions The extension on a valve allows the operator to open or close the valve from a distance. Different types of extensions can be used depending on the application and the distance from the gate to the actuator. > Floor stand Mainly used to facilitate the operator in opening and closing the valve at normal operating level. Required dimensions: H1: distance from centre line of the pipe to the base of the floor. d1: (wall bracket) distance from the wall to the face of the connecting flange. Notes:...
Open the catalog to page 7
Al Kl O Wafer style Knife Gate Valve, Type A Datasheet Technical changes kept in reserve > Tube • Stem and yoke assembly remains in its original position. • Handwheel is replaced by a tube, which rotates when operating the valve. • Stem rises and lowers within the tube. • Ideal for surface box operation, valve can be operated with a T-bar and a square nut. Required dimensions: H1:distance from centre line of the pipe to the base of the floor. d1: (wall bracket) distance from the wall to the face of the connecting flange. Notes: 1. Handwheel or square nut operated only. 2. A wall bracket (detail...
Open the catalog to page 8
Al Kl O Wafer style Knife Gate Valve, Type A Datasheet Technical changes kept in reserve HAndwheel (rising stem) • Standard handwheel actuator > Handwheel: Epoxy coated Cast Iron > Stem > Stem nut > Stem protector • Available from DN 50 to DN 1000 • Options: > Locking Device > Extensions AKO Armaturen & Separationstechnik GmbH Tel.: +49 6147 9159-0 65468 Trebur-Astheim E-Mail: [email protected]
Open the catalog to page 9
Al Kl O Wafer style Knife Gate Valve, Type A Datasheet Technical changes kept in reserve Handwheel (non-rising stem) • Recommended for installation where space is limited • Consists on: > Handwheel: Epoxy coated Cast Iron > Stem > Yoke bushing > Stem nut fixed to the gate • Available from DN 50 to DN 1000 • Options: > Locking Device > Extension > Square Nut Drive AKO Armaturen & Separationstechnik GmbH Tel.: +49 6147 9159-0 65468 Trebur-Astheim E-Mail: [email protected]
Open the catalog to page 10
Al Kl O Wafer style Knife Gate Valve, Type A Datasheet Technical changes kept in reserve Chainwheel • Recommended for elevated installations • Consists on: > Chainwheel: Epoxy coated Cast Iron > Stem > Stem nut > Stem protector • Available from DN 50 to DN 600 • Options (on request): > Locking Device > Extension > Non-rising Stem AKO Armaturen & Separationstechnik GmbH Tel.: +49 6147 9159-0 65468 Trebur-Astheim E-Mail: [email protected]
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