Used Pre Heater for sale (15,727)

Condition: new, Year of construction: 2025, DPF HEATER PRO PLUS™ is a device designed for drying all types of diesel particulate filters (DPFs) and catalytic converters, made entirely of stainless steel AISI 304 and acid-resistant steel AISI 316. It is equipped with an integrated measurement system and a drying system that operates at temperatures up to 130°C using a side-channel turbine. A built-in thermal printer allows for printing contamination measurements of the filter both before and after regeneration. This device is an excellent additional option for DPF cleaning machines that do not have an integrated drying system. BENEFITS OF USING THE DPF HEATER PRO: - Operates independently of the regeneration machine - Optimizes the filter regeneration process - Low drying costs - Contamination measurement system – test results confirmed with a printout - Quick filter clamping system – Camlock - Adapters for passenger cars and trucks - Full automation of the drying process Ledpfx Amsglpywspjaa TECHNICAL PARAMETERS: - Weight: 100 kg - External dimensions (L x W x H): 92 x 51 x 114 cm - Voltage: 3 x 400 V - Maximum power: 7.5 kW - Frequency: 50 Hz - Ambient temperature: 5 - 35°C - Airflow: up to 390 m³/h - Overpressure: up to 370 mbar - Vacuum: up to -300 mbar - Measurement system: integrated - Drying system: integrated - Hose diameter: 6/4" - Drying temperature: adjustable within 70°C - 130°C - Safety features: pressure sensor, emergency safety switch - Declaration of conformity: CE

Condition: new, functionality: fully functional, empty load weight: 105 kg, input voltage: 230 V, warranty duration: 24 months, temperature: 95 °C, Technical Data: Condition: NEW Catalog Number: 1.030-500.0 Power Type (Ph/V/Hz): 1 / 230 / 50 Connected Load (kW): 0.3 Inlet Temperature (max.): 50°C Inlet Flow Rate (min.): 400 l/h Water Flow Rate (l/h): 400-1000 Safety Valve Operating Pressure (max.): 200 bar Hot Water Operating Temperature (max.): 95°C Burner Output: 43 kW Heating Oil Consumption (max.): 3.5 kg/h Fuel Tank: 20 L Fuel: Heating Oil EL or Diesel Operating Weight: 105 kg Length x Width x Height (mm): 880 x 680 x 860 Lasdpoxtc Rcjfx Ampja Scope of Delivery: Classic Hand Spray Gun - M22 Thread Spray Lance: 1050 mm Hose: 10 m - DN8 - 250 bar - 100°C - M22/M22 Hose (connection between high-pressure cleaner and hot water generator) - 3 m - DN8 - 315 bar - 60°C Durable unit: - The robust frame provides protection during continuous and intensive use. - All parts requiring maintenance are easily accessible. - Integrated fuel filter and the option to remove the fuel tank for cleaning.

Condition: excellent (used), Year of construction: 2013, functionality: fully functional, machine/vehicle number: GE-KEK-100L, 🔧 Manual Spray Chemical Pretreatment Cabin – 1.6 × 1.6 × 2.2 m – 800 L • Cabin dimensions: 1,600 × 1,600 × 2,200 mm • Chemical tank: ~800 L • Pump/spray unit: ST 84 HE • Heating elements: 2×6 kW (water temperature: 45–60 °C) Lajdpfx Amew Nvykspea • Motor: ~1.5 kW • Power connection: 3×380/220 V, IP68 protection • Manual spray operation, automated circulation, rinsing. Closed system for safe chemical handling • Spring tray technology – for direct pretreatment prior to powder coating Condition: Excellent, complete unit, EU standard control, documented operation Price: €10,900 + VAT

Condition: new, Year of construction: 2024, I sell the new fourside moulder LEADERMAC COMPACT 623C (2M), New machine year 2024. Showroom machine ! Lodpfxsrfuc Re Ampoaa Configuration 6 spindles: Bottom 5,5 kW / 7,5 HP Right 5,5 kW / 7,5 HP Left 5,5 kW / 7,5 HP Top 7,5 kW / 10,0 HP Right moulding head 11 kW / 15,0 HP / adjustable speed Left moulding head 11 kW / 15,0 HP / adjustable speed Feeding speed adjustable 6-36 m/min. Feeding motor 3,0 kW / 5,5 HP + inverter Element width max. 15-230mm Element height max. 10-150mm Alle 6 Spindels 6000 rpm. / the left and right squaring moulder with adjustable speed Electronic programmer for setting the top spinde, aka working height. Material pressures for short elements. 3-zone pneumatic pressure system for feeding wheels. Total weight 4500kg. Total power 51,18 kW / 68,25 HP Fully working. Available immediately Showroom machine, fully NEW ! Tools, Moulding heads, squaring heads, and all accessories included.

Condition: new, We would like to offer shafts dedicated for HAAS 2000XL, 1500, and TEREX TDS 820 machines, equipped with side combs and a breaking bar. -4-7-7 -4-9-9 Laedpfjx Hhuiox Ampja PROTECHNIKA is a company with 21 years of history and from the very outset has specialized in the production of spare parts and complete recycling lines. In recent years, we have expanded our product portfolio to include the manufacturing of grinding shafts for slow-speed shredders. Through the implementation of automated welding processes and proprietary production technologies, we have significantly reduced lead times while maintaining consistently high quality. Grinding shafts are a series product, which, among other things, enables us to collaborate with machine manufacturers as an OEM supplier. What distinguishes PROTECHNIKA from the competition? It's simple! - Certified 3.1 materials - TUV SUD Rheinland-certified quality - ISO 9001 - Automated welding process / ISO 15613 / ISO 15614 compliant - Welders certified to ISO 9606-1 - ISO 9001:2015 - ISO 14001 - In-house design department capable of meeting any customer requirements - Our own RESEARCH AND DEVELOPMENT CENTER Customer relations are of paramount importance to us, as their satisfaction is our success!

Condition: used, Year of construction: 2019, machine/vehicle number: div., functionality: fully functional, 2x ROLLEX ironing presses, for pre-ironing (PRE-IRON); working width: 2.25 m, Washing machine / dryer set Washing machine Milnor; load capacity: 65 kg; year: 2004 + Dryer Kannegiesser; load capacity: 50 kg; year: 2005 + Dryer Passat; load capacity: 50 kg; year: 1984 Lsdpfx Aewpi Rkjmpeaa

Condition: new, Year of construction: 2025, 🚢 20ft Storage Container – As New (Year of Manufacture 2025 / 2026) – Available Immediately! High-quality shipping container in near-new condition – perfect for use as storage space, workshop, site container, or for professional transport purposes. ⭐ Your Key Benefits at a Glance 🆕 Year of manufacture: 2025 / 2026 – as new 💪 Extremely robust steel construction (2 mm wall thickness) 🌧️ Wind- and waterproof 🔐 Securely lockable with 4-way door locking system 🚚 Supplied with CSC plate – suitable for global transport 🌬️ Fitted with ventilation to prevent moisture 🪵 High-quality wooden flooring 🛠️ Integrated forklift pockets in the floor 📏 Dimensions & Technical Data 📐 External dimensions: 6,058 × 2,438 × 2,591 mm 📦 Internal dimensions: 5,898 × 2,350 × 2,390 mm 🚪 Door opening: 2,343 mm 🧱 Volume: approx. 33 m³ ⚖️ Tare weight: approx. 2.25 t 🏋️ Payload: up to 30 t These containers impress with their durability, security, and versatility – ideal for commercial, construction, trade, or demanding private applications. 📬 Enquire now – we will provide you with a tailored quotation! 👀 More container sizes & variants available. Ljdpfsg S Aiuex Ampjaa

Condition: excellent (used), Year of construction: 2000, functionality: fully functional, C-frame press for clinching technology Pressing force: 4.8 t Air pressure: 6 bar Ljdoy Ey Hzspfx Ampsaa Total stroke: 32 mm Power stroke: 3 mm No tools included

Condition: excellent (used), - Dimensions: 486x965x1219 mm - Capacity: 25L of oil - Year: 05/2015 - Model: PFG-800 - Temperature: 20-200°C - Computer with adjustable programs - Power: 0.6 kW Laedpfewybzcsx Ampsa - Voltage: 220V - Weight: 135 kg - Refurbished equipment: the equipment is prepared upon order, pick-up and return dates are agreed at that time (please request price after refurbishment)

Condition: like new (used), functionality: fully functional, With this offer, you are purchasing a Canon imagePRESS C165 colour production system in mint condition. Item for sale: 1 x Canon imagePRESS C165 with the following features: Includes booklet finisher + jogger Not the right configuration for you? We can easily configure the machine to your specifications. Please feel free to contact us! Meter readings: Total: approx. 33,610 pages Colour: approx. 14,158 pages Black: approx. 19,452 pages Condition: This offer is for a used device, which may show signs of wear (minor scratches or yellowing). The device has been tested for functionality. A test printout can be seen in the photo. Lasdsxzp D Espfx Ampoa Packaging and shipping: You are welcome to view the device during our business hours. Please make an appointment! Seaworthy packaging and worldwide shipping available on request! A functional test will be recorded on video for you before shipping or collection. For more information, please feel free to contact us personally.

Condition: ready for operation (used), functionality: fully functional, In this offer you purchase a used colour production system ‘Xerox Versant 180 Press’ Object of sale: 1 x Xerox Versant 180 with the following equipment: incl. Fiery Server EX180 incl. Paperdeck A-CF03 incl. Booklet Finisher A-FN13 Not the right equipment? It is no problem to configure the machine according to your wishes. Please feel free to contact us! Counter readings: Total: Approx. 4,419,328 pages Colour: Approx. 3,524,210 pages Black: Approx. 895,118 pages Lajdpfxeu Ra Smo Ampsa Condition: This offer is a used device, which may show signs of use (minor scratches or yellowing). (minor scratches or yellowing). The device has been tested for function A test printout can be seen in the photo Packaging and dispatch: You are welcome to view the device during our business hours. Please make an appointment for this! Seaworthy packaging and worldwide shipping available on request! A function test will be recorded on video for you before dispatch or collection. For further information, you can of course also contact us personally.

Condition: used, functionality: fully functional, With this offer, you are purchasing a used ‘Develop/Minolta Ineo+ 7090’ colour production system. Item for sale: 1 x Develop Ineo+ 7090 with the following equipment: Includes Fiery NX Pro Server Includes Paper Deck PF-712 + MB-511 Includes IQ-501 Includes Finisher FS-541 Lasdpfx Amjylublspea Meter readings: Total: approx. 2,406,166 pages Colour: approx. 1,679,570 pages Black: approx. 726,596 pages Condition: This offer is for a used device, which may show signs of wear (minor scratches or yellowing). The device has been tested for functionality. A test print can be seen in the photo. Packaging and shipping: You are welcome to view the device during our business hours. Please make an appointment! Seaworthy packaging and worldwide shipping available on request! A function test will be recorded on video for you before shipping or collection. For more information, please feel free to contact us personally.

Year of construction: 1996, condition: reconditioned (used), Stock-No.1624 Strand "spagetti" pelletizer Capacity 500 kg/h Drive 4 kW Rotor width 200 mm - double bearring materials: PP,PE,PS,PET,PC,PA div material Noise- protected housing box Lsdpfeby I Syjx Ampsaa OPTIONAL against additional cost: adjustable pellet length device Ask for our machine-stock-list, with more pelletizing equipment ex our stock availabe.

Condition: used, functionality: fully functional, This offer is for a used ‘Canon imagePRESS C10000VP’ colour production system Item for sale: Lajdpfx Asy Aly Iompoa 1 x Canon imagePRESS C10000VP with the following specifications: Includes Fiery Server Pro Includes 1 x Paper Deck D1 Includes Stacker H1 Not the right configuration? It’s no problem to configure the machine to your requirements. Please feel free to contact us! Meter readings: Total: Approx. 9,039,201 pages Colour: Approx. 7,444,138 pages Black: Approx. 1,595,063 pages Condition: This is a second-hand machine, which may show signs of use (minor scratches or yellowing). The machine has been tested for functionality A test print can be seen in the photo Packaging and shipping: You are welcome to view the machine during our business hours. Please arrange an appointment! Sea-worthy packaging and worldwide shipping available on request! A functional test will be recorded on video for you prior to dispatch or collection. For further information, you are of course welcome to contact us directly.

Condition: used, functionality: fully functional, This offer is for a used ‘Konica Minolta AccurioPress C4080’ colour production system Items included: 1 x Konica Minolta AccurioPress C4080 with the following specifications: Ljdjy Alwaopfx Ampeaa Includes Fiery Server E400-06 Includes 1 x PF-707m paper deck Includes FS-532 finisher Not the right configuration? We can easily configure the machine to your specifications. Please feel free to contact us! Meter readings: Total: Approx. 1,830,150 pages Colour: Approx. 762,852 pages Black: Approx. 1,067,298 pages Condition: This is a second-hand machine, which may show signs of use (minor scratches or yellowing). The machine has been tested for functionality A test print can be seen in the photo Packaging and shipping: You are welcome to view the device during our business hours. Please arrange an appointment for this! Sturdy packaging and worldwide shipping available on request! A functional test will be recorded on video for you prior to dispatch or collection. For further information, you are of course welcome to contact us directly.

Condition: used, TECHNICAL DATA • Length of sheets: 2,400 mm or 4,000 mm • Width of sheets: 150 mm • Material thickness: 1.5 mm • Load capacity: 500 kg/m² • Condition: used Available quantity: approx. 3,000 m² PRICES: • per m²: €15.00 net Available ex-stock Nordhorn. Optional accessories • Guardrail • Staircase • Transfer station • Collision protection YOUR CONTACTS AT OUR COMPANY: • Tanja Henkelmann • Rainer Nürenberg • Oliver Kopp TRANSPORT & INSTALLATION We are happy to assist you with the transportation and assembly of the goods. This item is available for collection. Delivery or shipping is possible at an additional charge. Additional costs depend on the place of delivery and the size of the consignment and can be requested individually from us. PAYMENT TERMS Payment terms will be agreed upon in the case of an order. The price is quoted per unit/net price or as stated in the description (plus VAT). You will, of course, receive an invoice with VAT shown separately. ABOUT US The company DLK in Nordhorn trades in new and used products in the areas of warehouse logistics, conveyor technology, mezzanine floors, textile storage, as well as machinery for trade, industry and the skilled trades. We continuously offer interesting used equipment from various manufacturers/brands at attractive conditions. If you have any questions, please feel free to contact us. Lasdovdqi Sepfx Ampja Four wins – The success factors of DLK – Warehouse technology | Levelmaker® | Logistics | Solutions

Condition: used, Electric Lift Table – Walkie Stacker, Pedestrian Pallet Stacker For ergonomic handling of small loads Manufacturer: EXPRESSO Model: Lift & Drive 225 (lift2move) Serial No. 19153-HD Year of manufacture: 2010 Model No.: Rated load capacity: 225 kg Lift travel: 1770 mm Lift height: 2350 mm Lifting speed (unladen / laden): approx. 100 / 75 mm/s Load cantilever: 400 mm Chassis length: 1130 mm Underride height: 90 mm Underride length: 600 mm Chassis version (front / rear): Ø 80 / 150 mm (2 fixed castors / 2 swivel castors) Overall length: 1130 mm Overall width: 600 mm Overall height: 2450 mm Motor power: 400 W Battery capacity: 24 V / 16 Ah - Electric lift drive with motor brake / self-locking gearbox and precision spindle with safety slip clutch - Wired remote control with spiral cable and button for 2 lifting speeds - Battery pack with quick-change system - Charge status indicator - 2 x 12 Volt, 17 Ah lead-acid batteries installed in the battery pack, battery NEW - External charger 24 VDC, 3 Amp (mains voltage 230 V, 50 Hz) - Manually movable, steering castors with three-stage parking brake - Continuously height-adjustable handlebar - Load mounting flange as per EXPRESSO standard 380 x 50 mm / 4 mounting holes M10, spacing 100-120-100 mm Lasdsflt Egepfx Ampea Fitted lifting aid: Four-prong fork attachment, Expresso type, Rated load of lifting aid: 40 kg - Lifting aid manually swivelled by 90° (lockable only in 0° position) - Lifting aid laterally adjustable on linear guide by ±100 mm (locking only in center) - Width between support arms: 320 mm - Height between support arms (lockable at): 365 / 400 / 450 mm (max. opening without locking holes: 510 mm) - Depth between support arms: 150 mm up to stop bolt / 300 mm max. Total weight: 100 kg Good condition

Condition: used, Electric loading lift – pedestrian stacker, pallet stacker truck For ergonomic handling of small loads Manufacturer: EXPRESSO Model: Lift & Drive 225P (lift2move) Serial No.: 19500S Year of manufacture: 2008 Type No.: Rated load capacity: 225 kg Lift travel: 1680 mm Lift height: 2200 mm Lifting speed (unloaded / loaded): approx. 100 / 75 mm/s Lajdpoflt Edjfx Ampja Lifting aid outreach: 861 mm Chassis length: 1020 mm Underclearance height: 90 mm Underclearance length: 600 mm Chassis design (front / rear): Ø 80 / 140 mm (2 fixed castors / 2 swivel castors) Overall length: 1400 mm Overall width: 600 mm Overall height: 2450 mm Motor power: 400 W Battery capacity: 24 V / 16 Ah - Electric lifting drive with motor brake / self-locking gearbox and precision spindle with safety slip clutch - Handheld remote control with spiral cable and 2 lifting speeds - Battery pack with quick-change system - Charge level indicator - 2 lead-acid batteries 12 Volt, 17 Ah installed in battery pack - External charger 24 VDC, 3 Amperes (mains voltage 230 V, 50 Hz) - Manually maneuverable, swivel castors with three-stage parking brake - Continuously height-adjustable handle - Load pick-up flange as per EXPRESSO standard Special version: Lifting aid by GIESLER for radial fan SC-1000 CP XT (Tiger) - Lifting aid load capacity: 25 kg - Lifting aid can be swivelled 90° via manual hydraulic pump - Jaw opening between support jaws: 300 / 330 mm - Jaw opening between clamping rollers: 200 – 300 mm - Clamping via handwheel - Lifting aid net weight: 60 kg Total weight: 140 kg Very good condition

Condition: used, Electric loading lift - pedestrian stacker, pedestrian stacker for ergonomic handling of small loads EXPRESSO type Lift & Drive 125 (lift2move) Series. No. 194679 Year of construction 2015 Type no. 1418242111 Nominal load capacity 125 kg Lifting distance 1450 mm Lifting height 1785 mm Lifting speed (unloaded / loaded) approx. 100 / 75 mm/s Projection of lifting aid 530 mm Chassis length 890 mm Underride height 90 mm Underride length 490 mm Chassis design (front / rear) Ø 60 / 100 mm (2 swivel castors / 2 swivel castors) Overall length 890 mm Overall width 545 mm Overall height 1930 mm Motor power 250 W Battery capacity 24 V / 7.2 Ah - Electric lift drive with motor brake / self-locking gear and precision spindle with safety slip clutch - Cable remote control with spiral cable and 2 lifting speeds - Battery pack with quick-change system - Charge status indicator - 2 lead-acid batteries 12 Volt, 7.2 Ah installed in the battery pack - External charger 24 VDC, 2.5 amps (mains voltage 230 V, 50 Hz) - Can be rolled by hand, swivel castors with three-stage parking brake - Handle infinitely height-adjustable - Load support U-profile for square according to EXPRESSO standard 210 x 45 mm / internal dimension 30 mm/ 4 M8 fixing holes at 50-60-50 mm intervals Mounted lifting aid: Special version from GIESLER LAM-DC conductor rail Load capacity of the lifting aid 40 kg Dead weight of lifting aid 24 kg Support rail can be moved sideways +-90 mm via linear guides (3 locking points left, center, right) Support rail can be swiveled +-38° (continuously lockable) Support rail with 2 clamps Lsdsflt Ebjpfx Ampoaa Distance between the clamps 550 mm Material clamping thickness 100 mm Material support dimensions W x D 650 x 155 mm Total weight 75 kg Very good condition

Condition: ready for operation (used), Year of construction: 2013, functionality: fully functional, Stationary, oil-free, high-performance reciprocating compressor used for the stretch blow molding process of PET bottles. Lodpeyttaisfx Ampeaa Complete with anti-vibration mounts (no dynamic load), electric motor, V-belt drive, intercooler, separator, aftercooler, pulsation damper, and a 40 bar galvanized air receiver (500L) with electronic drains. High-pressure reciprocating compressor Manufacturer: AF Kompressoren Model: CE 46B Year of manufacture: 2013 Nominal capacity: 1320 m3/h Pressure: 40 bar Power: 250 kW 3 x 400V/50Hz The compressor comes from our PET bottle production line (Plama-Pet), which we discontinued in 2017 to focus on preform manufacturing. The compressor is in good condition. The original purchase price was €168,000 and it comes from ongoing production. Please refer to the PDF file for further technical details.

Condition: used, total length: 1,100 mm, total width: 3,880 mm, total height: 3,170 mm, - Documentation available: No - CE marking present: Yes - CE certificate present: No - Transport dimensions: 1100mm x 3880mm x 3170mm (l x w x h) - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Ledpfswivp Hsx Ampoaa Peter Stroomberg

Condition: used, Year of construction: 2025, total length: 1,450 mm, total width: 800 mm, total height: 2,200 mm, Empty weight: 970 kg Price: On request Movable Press-Cylinder - Year: 2025 - Documentation available: Yes - CE marking present: Yes - CE certificate present: Yes - Operating hours: 0 - Drive system: Conventional - Press model: C-Frame press - Press force [ton]: 100 - Max. stroke [mm]: 380 - Table length [mm]: 1500 Laodpfx Amew N Su Depsa - Table width [mm]: 300 - Ram length [mm]: 100 - Throat depth [mm]: 1100 - Height adjustment [mm]: 750 - Motor power: 3.0kW - Transport dimensions: 1450mm x 800mm x 2200mm (l x w x h) - Transport weight [kg]: 970kg - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, Year of construction: 2025, total length: 1,100 mm, total width: 800 mm, total height: 2,200 mm, Empty weight: 540 kg Price: On request Movable pressing-cylinder - Year: 2025 - Documentation available: Yes - CE marking present: Yes - CE certificate present: Yes - Operating hours: 0 - Drive system: Conventional Laedpjw N St Hsfx Ampea - Press model: C-Frame press - Press force [ton]: 60 - Max. stroke [mm]: 380 - Table length [mm]: 1000 - Table width [mm]: 260 - Ram length [mm]: 100 - Throat depth [mm]: 750 - Height adjustment [mm]: 750 - Motor power: 2.2kW - Transport dimensions: 1100mm x 800mm x 2200mm (l x w x h) - Transport weight [kg]: 540kg - Transport packages [pcs.]: 1 Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, Year of construction: 2025, total length: 1,300 mm, total height: 1,400 mm, total width: 800 mm, Empty weight: 800 kg Price: On request - Year: 2025 - Documentation available: Yes - CE marking present: Yes - CE certificate present: Yes - Serial number: HB10011N2025006 - Operating hours: 0 - Control: Teach-in - Motor power: 4.0kW - Transport dimensions: 1300mm x 800mm x 1400mm (l x w x h) - Transport weight [kg]: 800kg - Transport packages [pcs.]: 1 Lsdpfx Amjxixruspoaa Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum

Condition: used, Year of construction: 2025, total length: 1,200 mm, total width: 800 mm, total height: 1,800 mm, Empty weight: 450 kg Price: On request - Year: 2025 - Documentation available: Yes - CE marking present: Yes - CE certificate present: Yes - Serial number: PB12093N2025005 - Operating hours: 0 - Drive system: Conventional - Number of rolls [pcs.]: 3 - Power [kW]: 1.5 - Shaft diameter [mm]: 155 - Capacity diameter round [mm]: 50 - Transport dimensions: 1200mm x 800mm x 1800mm (l x w x h) - Transport weight [kg]: 450kg - Transport packages [pcs.]: 1 Ljdpfx Aoxixrhjmpeaa Financial information VAT: The price shown is exclusive of VAT VAT/margin: VAT deductible for entrepreneurs Delivery and trade-in always possible for everything in the industrial sectors Lukas van Rossum