Used Flange Ball Valve for sale (10,583)

Condition: used, HARDINGE Conical Ball Mill 6’-0” dia x 36” ball mill for the dry grinding of industrial minerals. Mill fitted with Manganese steel liners for operation will steel ball grinding media. White Metal Bearings on trunnions. 90 kW Motor fitted (could be reduced to 75 kW). Hsdpfxozvgvnj Ac Iont Mill with countershaft drive but could be converted to gearbox.

Year of construction: 2026, condition: new, ceramic ball mill ,Batch ball mill ,also called ceramic ball mill ,it is used for fine grinding of feldspar,quartz,clay,ore and so on.The ceramic ball mill is mainly used for material mixing, grinding,uniform product fineness,and saving power.It can be dry or wet.The machine can use different liner types according to production needs to meet different needs.The fineness of the grinding operation is controlled by the grinding time ceramic ball mill Working principle when ball mill working,steel balls inside drum will rotate with the drum to some height,and then steel balls fall down with materials to reach the point of grinding. Working Principle of Ceramic ball mill ceramic ball mill ,Intermittent ball mill grinding operation is finished in the cylinder body. When the cylinder rotates, materials ascend to a certain height and then fall along a certain path due to the balls' gravity. Two forces are generated on the balls inside. One is the force on balls through tangent direction; the other is a opposite force in the contrast to the diameter of balls, as a result of the force generated when the balls slide down. These two forces will constitute a couple for the steel balls. The balls are squeezed between the cylinder and the adjacent steel balls, so the couple can make unequal-sized friction force. The balls will orbit along with the cylinder axis and then fall down, which can produce a strong impact force on the ores in the cylinder body and, as a result, the ores will be crushed. In conclusion, the ores in the cylinder body are mainly crushed by composite effect of peeling force, impact force and extrusion force. Ceramic ball mill also named Intermittent ball mill which adopts the wet intermittent operation, is used for fine grinding and mixing the material such as feldspar, quartz, clay ceramic raw materials. The discharging and the mud size can through through 1000 sieve pore. This machine is high milling machinery, materials should be Broken in the fineness of the state into the grinding mill to get the highest efficiency and economic benefits. The cement mill is key equipment for the grinding process of the cement clinker after the crushing process of it. It is mainly used in the cement silicate product industry. After long term design and manufacture of the cement mill, our company now has series of cement mill with various specifications to meet with different requirement from our customers. Features of Cement Mill Our company adopts suitable transmission methods according to different specifications. We have brim drive and center drive as transmission form. The cylinder adopts new type step lining to increase the grinding area. And it is easily repairable and changeable. The new designed separate-chambered structure adopts flexible lifting blade and fixed lifting blade and it is easily fixed and repaired. Technical Details Hjdovzx Auopfx Ac Ijnt We have different models and options for different requirements, please contact us for more info.

Condition: new, Safety valve for presses IMI HERION / NORGREN PSV valve, twin valve, directional control valve Type: XSz 10 V ID No. 2492982 Serial No. 2608 Equivalent to order no.: 2492951 Pressure: 3 to 10 bar Compressed air connection thread (A)+(B)+(P)+(S): 1/2" Compressed air outlet (R): flange connection Supply voltage: 2x 24 Volt (DC) - Base plate hole spacing 115 x 63 mm, 4x mounting holes Ø 6.5 mm - Equipped with silencer on compressed air outlet (R) Valve body dimensions L x W x H: 105 x 90 x 220 mm Dimensions with silencer L x W x H: 180 x 165 x 220 mm Weight: 3.0 kg New, unused, from stock Hnodpfxow T U A Se Ac Iet

Condition: excellent (used), Butterfly valve, flap valve, ball valve, butterfly valve, shut-off valve, gate valve, pneumatic control valve, angle seat valve, valve -Manufacturer: ARI Foxboro, Pneumatic Control Valve -Control valve: type ARI-Stevi 451 -Spring accumulator: ARI Type 100403429-216 -Positioner: Foxboro, Schneider Type SRI986-BIDS7ZZZNA Hnjdpfx Aoq Nqxzjc Ijt -Connection: DN50 PN16-25 -Number: 3x control valve available -Price: per piece -Dimensions: 710/300/H270 mm -Weight: 31 kg

Condition: good (used), Pneumatic pinch valve, disc valve, flap valve, ball valve, butterfly valve, shut-off valve, slide, Permaflex pinch valve, hose pinch valve -Manufacturer: Prema-Service, PQV - pneumatic pinch valve -Type: PQV DN 150 Hnodpfxopul Uij Ac Ist -Hole circle: Ø 240 x 23 mm -Quantity: 3x valves available -Price per piece -Dimensions: 420/285/H310 mm -Weight: 46 kg/piece

Condition: good (used), Pneumatic pinch valve, disc valve, flap valve, ball valve, butterfly valve, shut-off valve, slide, Permaflex pinch valve, hose pinch valve -Manufacturer: Prema-Service, Permaflex - pinch valve -Pinch valve pneumatic -Connection: DN100 -Hole circle: Ø 180 x 18 mm -Quantity: 2x valves available -Price per piece -Dimensions: Ø225 x 280 mm Hnsdpoptf Idofx Ac Iot -Weight: 15 kg/piece

Condition: excellent (used), Balancing valve, shut-off valve, ball valve, ball tap, pressure relief valve, control valve, flow switch, balancing valve -Manufacturer: Alfa Laval, control valve flow switch, unused -Type: RV4 .: 1762570-80 -Size: DN25 Hedpjq Rx Abofx Ac Iont -Number: 2x valve available -Price: per piece -Dimensions: 125/104/H195 mm -Weight: 3.6 kg/piece

Condition: used, Pneumatic pinch valve, disc valve, flap valve, ball valve, butterfly valve, shut-off valve, slide, Permaflex pinch valve, hose pinch valve -Manufacturer: Prema-Service, PQV - pneumatic pinch valve -Type: PQV DN 125 -Hole circle: Ø 210 x 18 mm -Quantity: 5x valves available -Price per piece -Dimensions: 350/270/H250 mm -Weight: 17kg/piece Hedpfepumagjx Ac Isnt

Condition: used, Gate valve with flange connection, butterfly valve, flap valve, ball valve, butterfly valve, shut-off valve, gate valve, V-flange -Welding flange: DIN 2633 - PN16 -Type: PN16 DN250 / 267 C22.8 34526/1 GER. -Inside diameter: 255 mm -Hole circle O: 355/26 mm -Price per piece -Quantity: 1 pieces -Welding flange: other sizes in stock are available on request -Dimensions: O 405 / H67 mm -Weight: 17 kg Hsdpefnxxcofx Ac Ijnt

Condition: new, Year of construction: 2026, power: 7.5 kW (10.20 HP), Batch ball mills find applications in various industries where the processing of materials in discrete batches is required. The versatility of batch ball mills makes them suitable for a range of applications. Here are some common batch ball mill applications: Hedeq I N H Nopfx Ac Ient 1. Ceramics Industry: - *Glaze Preparation:* Batch ball mills are extensively used in the ceramics industry for preparing glazes. Raw materials such as feldspar, quartz, and clay are ground with ceramic balls to achieve the desired particle size for glaze formulation. 2. Chemical Industry: - *Material Grinding:* Batch ball mills are used for grinding and blending various chemical materials. This includes the production of pigments, dyes, and other specialty chemicals where precise particle size control is crucial. 3. Pharmaceuticals: - *Drug Formulation:* In pharmaceutical manufacturing, batch ball mills are used for grinding and blending powders to create drug formulations. The controlled environment provided by these mills is essential for maintaining the integrity of pharmaceutical compounds. 4. Food Industry: - *Ingredient Mixing:* Batch ball mills may find application in the food industry for mixing and grinding ingredients. This can include the production of food additives, flavorings, and other powdered or granular products. 5. Mining and Minerals Processing: - *Ore Grinding:* Batch ball mills are used in mining and minerals processing for grinding minerals and ores. The controlled grinding helps in obtaining the desired particle size for subsequent processes, such as mineral separation or extraction. 6. Paints and Coatings: - *Pigment Dispersion:* In the paints and coatings industry, batch ball mills are employed for dispersing pigments into paint formulations. Achieving a uniform particle size is crucial for the quality and appearance of the final coating. 7. Building Materials: - *Raw Material Grinding:* Batch ball mills are used in the preparation of raw materials for the production of building materials, such as cement and concrete. Grinding of materials like limestone and clay helps in obtaining the desired fineness for subsequent processes. 8. Electronic Materials: - *Ceramic Powder Processing:* In the electronics industry, batch ball mills can be employed for processing ceramic powders used in the production of electronic components and insulating materials. 9. Research and Development: - *Material Testing:* Batch ball mills are often used in research and development laboratories for testing and optimizing material formulations. They provide a controlled environment for small-scale processing and experimentation. 10. Customized Applications: - *Specialized Processes:* Batch ball mills can be adapted for various specialized processes in different industries where precise grinding and mixing are required. Custom modifications can be made based on specific application requirements. When using a batch ball mill, it's important to consider factors such as the type of material being processed, desired particle size, and the specific requirements of the end product. Additionally, following the manufacturer's guidelines and maintaining proper operating conditions are essential for efficient and effective milling processes. Technical details We have different options for different requirements, please contact our team for more info.

Condition: new, functionality: fully functional, Year of construction: 2026, Dry and Wet Ball Mill: Structure, Operation, and Technical Details A ball mill is a fundamental grinding device used in mineral processing, cement manufacturing, chemical production, and other industrial applications. It works by rotating a cylindrical shell filled with grinding media—usually steel balls—causing impact and friction that reduce materials to fine powder. Based on the grinding environment, ball mills are classified into dry and wet types, each suited for specific materials and process requirements. Working Principle Both dry and wet ball mills operate on the same mechanical principle. The rotating cylinder, driven by a motor through a gear system, lifts the grinding media and material along the inner wall. As the rotation continues, the balls fall under gravity, striking and grinding the material. The difference lies in the presence or absence of a liquid medium during grinding. Dry Ball Mill A dry ball mill is used when the material must remain moisture-free or when water could affect product quality. It is commonly applied in cement clinker, limestone, quartz, and refractory material grinding. The discharge can be either grate type or overflow type, depending on the desired fineness. Technical Features: Feeding size: ≤25 mm Discharge size: 0.075–0.4 mm Capacity: 0.65–90 t/h Liner material: High manganese steel or wear-resistant alloy Drive system: Gear-driven or direct-coupled motor Dust control: Equipped with air exhaust and dust collector Hodpfx Acsq Nx Ale Ijnt Advantages: Suitable for materials sensitive to moisture No drying process required after grinding Lower corrosion risk and simpler maintenance Easier material classification and separation Limitations: Dry grinding produces more dust and heat, requiring efficient ventilation and dust collection systems. Wet Ball Mill A wet ball mill operates with water or another liquid medium added to the material. The slurry formed during grinding improves efficiency by reducing friction and preventing excessive heat buildup. It is widely used in ore beneficiation, ceramics, and chemical industries. Technical Features: Feeding size: ≤25 mm Discharge size: 0.074–0.2 mm Capacity: 0.65–615 t/h Liner material: Rubber or high-chromium steel Discharge method: Overflow or grate type Auxiliary equipment: Classifier, pump, and thickener for slurry circulation Advantages: Higher grinding efficiency and finer particle size Reduced dust and noise levels Continuous operation suitable for beneficiation circuits Better control of particle uniformity Limitations: Requires drying if the final product must be in powder form and involves more complex slurry handling. The selection between dry and wet grinding depends on the material characteristics, downstream process, and environmental conditions. Dry mills are preferred for materials that must stay moisture-free, while wet mills are ideal for fine grinding and slurry-based processes. Conclusion Dry and wet ball mills share the same mechanical structure but differ in their grinding environment and application scope. The dry type offers simplicity and low maintenance for moisture-sensitive materials, while the wet type provides higher efficiency and finer output for mineral and chemical processing. Understanding their technical parameters and operational differences ensures optimal equipment selection, improved productivity, and reliable performance in industrial grinding operations.

Condition: used, Butterfly valve, flap valve, ball valve, butterfly valve, shut-off valve, gate valve Hnsdpef Ek Igjfx Ac Iet -Gate valve: MAW type NW 40/32 ND 40 -Valve drive: Leibfried type LDA 309-1 pneumatic -Nominal pressure: 7 bar -Connection: inside Ø 40 mm -Dimensions: 375/150/H195 mm -Weight: 14 kg

Condition: good (used), Year of construction: 1975, overall weight: 6,000 kg, total width: 1,800 mm, total length: 5,000 mm, total height: 2,900 mm, sheet thickness (max.): 12 mm, Flanging and dishing machine Schleiffstein - KbOL 3012 Tank Head Manufacturing  Dishing and Flanging machine up to 12 mm in 260 Nm/mm2 Forming roll optional for sale Radius 50 / 70 / 100 / 150 / 200 / 250 / 300 Fully hydraulic machine Field off aplication heads, bottoms for vessel, tanks, beverage manufacturing tanks, beer tanks Torispherical heads Ellipsoidal heads Spherical bottoms Dished bottem tank construction Flat bottems Sperical dished bottoms Cones     Max. workpiece: 6500Ø Hnodozz Ipgepfx Ac Iet Maximum sheet thickness: 12mm Max. dishing radius: 300mm Min. product Ø: 300 Min. plate thickness: 2mm Min. dishing radius: 50mm Max height on dishing side:350mm Working speed: 0 - 5000mm/min. Power: 20kW Length: 5000mm Width: 1800mm Height: 2900mm Weight: 6000kg Please Note: The information on this page has been obtained to the best of our ability and belief, and from the manufacturers where possible. It is given in good faith, but its accuracy can not be guaranteed. Accordingly, it will not form a representation or constitute contractual terms. We advise you to check any vital details!

Condition: used, Year of construction: 2017, machine/vehicle number: 472447, LEIBINGER TRANSVASA 12/6 EK – monobloc counter-pressure bottle emptying / transfer machine for carbonated beverages in glass bottles IDENTIFICATION - Manufacturer: LEIBINGER - Model: TRANSVASA 12/6 EK - Year of manufacture: 2017 - Serial/order number: 472447 - Previous application: cider FUNCTION AND OUTPUT - 12 emptying valves - Counter-pressure emptying with long-tube technology - 6 decapping stations - Direction of operation: clockwise - Nominal output: 2,500 bottles/h for 0.75 l bottles - Adjustable range: 560–2,800 bottles/h - Designed for carbonated beverages, e.g. traditionally produced cider - Automatic removal and collection of pierced bottle closures - Integrated through conveyor PRODUCT AND UTILITY DATA - Maximum product temperature: 20 °C - Compressed air: 6 bar; connection R 1/2" - CO₂ product pressure: 8 bar; gas connection R 1/2" - Product outlet: DN 40 - Gas discharge: DN 40 - Buffer tank: 100 l nominal volume according to the order confirmation; 108 l according to the rating plate - Product pump: stainless-steel rotary lobe pump, material 316L - Conveyor height: 1,000 mm ± 50 mm ELECTRICAL DATA - Operating voltage: 400 V - Control voltage: 24 V DC - Frequency: 50 Hz - Main drive: max. 0.75 kW MATERIALS AND DESIGN - Product-contact parts mainly made of stainless steel 316Ti and 316L - Main pipework made of stainless steel 316L - Emptying tubes made of stainless steel 304 - Food-grade plastics, e.g. POM and PTFE - Food-grade elastomers, e.g. EPDM - Hygienic tubular frame design without horizontal collection surfaces Hjdpjzz Rmbjfx Ac Iont - Frameless Makrolon safety guarding with interlocked doors and removable covers - CIP connections - Mechanical lifting pistons press the bottles against the emptying valves - Bottle-presence monitoring at the infeed and jam monitoring at the discharge - Central safety clutch - Height-adjustable machine feet - CE-compliant design at the time of delivery ACCESSORIES AND DOCUMENTED BOTTLE FORMATS - SOWEC SO filter, year 2017 - Order confirmation: guide parts for one bottle format included - Lightweight 75 cl cider bottle: height 290 ± 1.8 mm, body diameter 82.8 ± 1.5 mm, 29 mm crown finish, approximate brimful capacity 78.5 cl, approximate glass weight 540 g - Méthode Traditionnelle 75 cl bottle, model 1164/320: height 300 ± 1.8 mm, body diameter 85.9 ± 1.5 mm, 29 mm crown finish, filling capacity 750 ± 10 cm³ at 72 mm, approximate glass weight 775 g, maximum carbonation 5.0 volumes CO₂ The original order confirmation, operating manual and bottle data sheets are available. The completeness and condition of the format parts and accessories currently present must be verified before use.

Year of construction: 2021, condition: used, functionality: fully functional, T-nut inserting machine for Large Flange T-nuts Hnsdpfx Aozbu R Ejc Iet

Condition: new, functionality: fully functional, power: 55 kW (74.78 HP), Year of construction: 2026, Ball Mill for Powder and Mining Plant: Structure, Function, and Technical Details A ball mill is a key grinding machine widely used in mining, metallurgy, cement, chemical, and powder-making industries. It is designed to grind various ores and other materials into fine powder through impact and attrition between steel balls and the material inside a rotating cylindrical shell. In mining plants, ball mills are essential for ore beneficiation, preparing materials for flotation, magnetic separation, or leaching processes. In powder production, they ensure uniform particle size and high surface area for further processing. Working Principle The ball mill operates on a simple yet effective principle: as the cylindrical shell rotates around its horizontal axis, the grinding media (steel or ceramic balls) are lifted along the inner wall by centrifugal force and friction. When they reach a certain height, they fall freely, striking and grinding the material below. This repeated motion causes both impact and abrasion, reducing the material to the desired fineness. The grinding process can be performed in dry or wet conditions depending on the application. Structural Composition A standard ball mill consists of several main components: Feeding part: Equipped with a feeder or screw conveyor to ensure uniform material input. Discharging part: Can be grate type or overflow type, depending on the discharge method. Rotating part: The cylindrical shell made of steel plates, lined with wear-resistant liners. Transmission system: Includes motor, reducer, small transmission gear, and electrical control. Grinding media: Steel balls or ceramic balls of different diameters for efficient grinding. The internal liner design and ball size distribution are optimized to achieve maximum grinding efficiency and minimal energy consumption. Technical Details Typical Specifications: Feeding size: ≤25 mm Discharge size: 0.074–0.4 mm Capacity: 0.65–615 t/h (depending on model and material hardness) Cylinder speed: 18–38 r/min Hnodpfoq Nf U Ejx Ac Iot Power: 18.5–4500 kW Liner material: High manganese steel, rubber, or alloy steel Grinding media load: 30–45% of cylinder volume Operating Modes: Dry grinding: Suitable for materials that must remain moisture-free, such as cement clinker, limestone, and quartz. Wet grinding: Common in ore beneficiation, where water or slurry improves grinding efficiency and particle uniformity. Application in Mining Plants In mining operations, ball mills are used after crushing to further reduce ore size and liberate valuable minerals. They are integrated into grinding circuits with classifiers, hydrocyclones, and flotation systems. The ground material is classified by size, and oversized particles are returned to the mill for regrinding. This closed-circuit system ensures consistent product fineness and efficient energy use. Common Applications: Gold, copper, iron, and zinc ore grinding Cement clinker and slag processing Silicate and ceramic powder production Coal and mineral powder preparation Conclusion A ball mill is an indispensable piece of equipment in both powder production and mining beneficiation plants. Its ability to grind materials into fine, uniform particles makes it vital for downstream processes such as flotation, sintering, and chemical reactions.

Condition: used, Used Matra valve grinding machine with double-cone collets as shown, 380 Volt electric motor fully functional. Please do not send email enquiries! If you have any questions, we are happy to assist you by phone. Viewing and collection only possible by prior telephone appointment! Subject to alterations, prior sale, and errors. Hedpfxez Ayl No Ac Iont

Condition: used, This listing is for Biotek Valve module Fluidic Component The unit is in full working condition and ready for immediate use The BioTek Valve Module is a fluidic control component designed for use with BioTek microplate washers and automated liquid-handling systems. It provides controlled switching between fluid supply lines and is suitable for laboratory washing applications. The module is supplied as an individual fluidic component. Transparency Report and Technical Audit: Software and Media Disclosure: As a Direct-from-Lab asset, any original software media or accessories found with the unit are included as a courtesy. Licensing Notice: We do not provide, transfer, or guarantee software licenses or keys. The buyer is responsible for all software licensing, registration, and workstation compatibility via the manufacturer. Notice for Procurement: This unit is sold As-Is. While we verify the power-on status and physical integrity, we do not perform analytical validation, fluidic testing, or operational calibration. Ideal for labs with in-house technical expertise or existing service agreements. Sustainability Impact: By choosing Direct Reuse, your facility avoids the carbon footprint of new manufacturing and prevents specialized materials from entering waste streams. Direct-to-Lab reuse is the most carbon-efficient way to equip a modern laboratory. Source Pedigree: Biotech / Research Facility Hnodpfx Ajzqf H Isc Iot Condition: Direct-from-Bench (Decontaminated/Original) Integrity: 100% Original Parts (Non-Refurbished)

Year of construction: 2021, condition: excellent (used), Insert nut (insert sleeve) machine, Stafast HFM-CF. The machine is configured for M8 nuts with a large flange. The machine is in very good condition. Hnjdpey Ui Tiofx Ac Iot Ready for use.

Condition: used, Machine: Primus Vaculi 6 valve row filler Hnedpjz Ad D Nofx Ac Ist

Condition: good (used), functionality: fully functional, Year of construction: 1998, operating hours: 2,618 h, load capacity: 2,000 kg, lifting height: 4,000 mm, free lift: 1,900 mm, load center: 500 mm, fuel type: electric, mast type: duplex, battery capacity: 465 Ah, battery voltage: 80 V, DGUV certified until: 09/2027, fork length: 1,200 mm, total height: 2,550 mm, Equipment: 3rd hydraulic function, 4th hydraulic function, CE marking, UVV, full service history, lighting, sideshift, Linde E 20 electric forklift with the following specifications: * Operating hours: 2,618 * Lifting capacity: 2,000 kg * Lifting height: 4,000 mm * Overall height: 2,550 mm * Year of manufacture: 1998 LINDE 2.0-ton electric forklift with a semi-cabin, very good tires (rear tires new), duplex mast with full free lift, side shifter, 4th valve, multi-lever, two-pedal control, lighting, fork length 1,200 mm, charger. Includes service according to LINDE manufacturer's specifications and a valid UVV inspection upon sale. Inspection, demonstration, and test drive are available by appointment only. Please call to schedule. Sale is exclusively to commercial businesses. Subject to prior sale, errors and omissions excepted. We can deliver your new forklift cost-effectively with our own ramp-equipped low-loader (transport costs upon request). Hnsdpfozrr H Djx Ac Ist You can find more information and offers on our website!

Condition: used, Butterfly valve, flap valve, ball valve, butterfly valve, shut-off valve, gate valve, pneumatic control valve, angle seat valve, valve Hnjdpfx Acoigwdas Iet -Manufacturer: bürkert, pneumatically operated 2/2-way angle seat valve unused -Type: 2000 A 40,0 PTFE VA -Connection: DN40 PN16 -Dimension: 260/103/H250 mm -Weight: 3,3 kg

Condition: good (used), overall weight: 42,000 kg, total width: 2,800 mm, total length: 12,400 mm, total height: 5,100 mm, BOLDRINI RIBO 30HY/6000 – Flanging & Dishing Machine Manufacturer: BOLDRINI (Italy) Model: RIBO 30HY/6000 Type: Hydraulic Flanging & Dishing Machine Max. workpiece diameter: 6,000 mm Maximum plate thickness: 30 mm (cold forming) Hnedpfozilu Ajx Ac Ijt Year: 2002 Application: Dishing and flanging of tank heads, pressure vessel ends and dished ends. Length:12400mm Width:2800mm Height:5100mm Weight:42000kg Please Note: The information on this page has been obtained to the best of our ability and belief, and from the manufacturers where possible. It is given in good faith, but its accuracy can not be guaranteed. Accordingly, it will not form a representation or constitute contractual terms. We advise you to check any vital details!

Condition: excellent (used), Safety valve for refrigeration compressor, refrigeration unit, cooling compressor, refrigeration unit, cooling compressor, compressor, filter dryer housing, shut-off valve, ball valve, temperature switch, thermostat, expansion valve, safety valve -Manufacturer: Hansa, safety valve, unused, original packaging -Type: KSV 28 bar 2442280050 -Connection: G1/2" -Number: 5 safety valves available -Price: per piece Hjdpfefyfxbex Ac Ient -Package dimensions: 150/80/H55 mm -Weight: 0.6 kg/piece

Condition: used, functionality: fully functional, Alfa Laval TJ20G Rotary Jet Head 316L Stainless Steel 1½" Jet head's were removed from process in 2023 and kept as spares. In good condition. Hnjdpfx Acezlqnye Ist We have up to 8 of these available. Contact us for more information