ss evaporator used for sale

General SKU338T907 LocationBarneveld MakeGEA Canzler Type1000/02 KOS No.18481 Year of construction1996 Pressure Working pressure0.5 Bar Vacuum possiblecheck Working pressure jacket6 Bar Vacuum possible jacketcheck Main Features MaterialStainless steel Motor2.5 KW Surface0.2 m2 Specified Features - Film evaporator Film evaporatorcheck Heating surface0,2 m² Capacity10 ltr Rotor sizesDia. 98x700 mm Product inletDN25 Product outletDN 40 Vapour outletDN 100 With jacketcheck Max. temperature150 °C. Rotor with fixed bladescheck Number of blades3 MotorABB, 2,5 kW, 500 Volt, 1430 rpm, (ex) Rotor speed1430 rpm MaterialStainless steel 1.4571 (316Ti) Information Mounted on framecheck Total height2,90 m Weight150 kg CEcheck Floorspace1,1x0,8 m ATEX compatiblecheck Extra Specificationsjacket capacity: 2 Ltr. Film evaporatorsGEA CanzlerColumns > Film evaporators ...

General SKU212T089 LocationBarneveld MakeGrill & Grossmann No.4866 Year of construction1992 Pressure Working pressure0 Bar Vacuum possiblecheck Working pressure jacket5 Bar Main Features MaterialStainless steel Motor7.5 KW Surface4 m2 Specified Features - Film evaporator Film evaporatorcheck Notified bodyTÜV Heating surface4m² Capacity560 Ltr. Rotor sizesDia: 403x3152 mm Product inletDN 32 Product outletDN 40 Vapour outletDN 300 With jacketcheck Max. temperature160°C Rotor with wiper bladescheck Number of stages on rotor:1 Number of blades54 ( 18 each section, teflon wipers) Motor7,5 kW, 400/690 Volt Rotor speed186 rpm With condenserDia: 550x4315 mm Heating surface40m² MaterialStainless steel 1.4571 (316Ti) Information Total height3,61 m Weight2110 kg Floorspace1.0x1.0 m ATEX compatiblecheck Extra SpecificationsWith Barriquand plate heat exchang ...

General SKUR0803 LocationBarneveld MakeJaeggi Güntner (CH) TypeVKR 70/112/44.5-1480-1 Mach.No.2732 Pressure Vacuum possiblecheck Vacuum possible jacketcheck Working pressure shell7 Bar Vacuum possible shellcheck Working pressure tubes9 Bar Tubular vacuum possiblecheck Working pressure vapour evaporator13 Bar Main Features Shell (Material)Stainless steel Tube (Material)Stainless steel Surface22 m2 Specified Features - Falling film evaporator Falling film evaporatorcheck Capacity460 kW Number of stages:1 Heating surface22 M2 Tube capacity500 ltr. Number of tubes:112 Tube diameter44,5x2mm Tube length1480mm Shell capacity280 Ltr. Max. temperature200 degr. C MaterialStainless steel 1.4435 (316L) Falling film evaporators Heat exchangercheck Verticalcheck Heating surface23 m2 Tube capacity500 ltr Number of tubes:112 Max. temperature-20/200 degr. C Shell ca ...

General SKUR0363 LocationBarneveld MakeBuss-SMS Verfahrenstechnik GmbH (D) TypeFallfilmverdampfer 73 m2 Mach.No.22.11.6351/1 Pressure Working pressure0.5 Bar Vacuum possiblecheck Main Features Surface73 m2 Specified Features - Falling film evaporator Falling film evaporatorcheck Capacity4000 Ltr/Hr Heating surface73 m2 Tube capacity1035 Ltr Number of tubes:80 Tube diameter44.5 mm Tube length6620mm Shell capacity998 Ltr Max. temperature350 Degr. C. Internal spiral(13 Ltr) Max. temperature350 Degr. C. MaterialStainless steel 1.4541 (321) Information Year of construction1994Falling film evaporatorsBuss-SMSColumns > Falling film evaporatorsBrand > Buss-SMS What you can expect from Foeth: -- Machine is in working condition -- At a reduced price compared to new -- Ready for shipping to any destination worldwide -- You are welcome to inspect the machine in Barneveld, T ...

General SKUR0800 LocationBarneveld MakeJaeggi Bern (CH) Mach.No.1437 Pressure Working pressure2 Bar Vacuum possiblecheck Working pressure vapour evaporator7 Bar Main Features Surface10 m2 Specified Features - Falling film evaporator Falling film evaporatorcheck Heating surface+/- 10m2 Tube capacity225 ltr Number of tubes:24 Tube diameter50mm Tube length2490mm Shell capacity349 ltr Max. temperature200 MaterialStainless steel 1.4435 (316L) Information Year of construction1985 Extra Specificationstopcover is missing Falling film evaporatorsJaeggi BernColumns > Falling film evaporatorsBrand > Jaeggi Bern What you can expect from Foeth: -- Machine is in working condition -- At a reduced price compared to new -- Ready for shipping to any destination worldwide -- You are welcome to inspect the machine in Barneveld, The Netherlands. Please visit us in Barneveld for many m ...

General SKU403U1196 LocationBarneveld MakeJenaer Glaswerk TypeDSV50 Year of construction1995 Pressure Vacuum possiblecheck Main Features MaterialGlass Surface0.1 m2 Specified Features - Film evaporator Film evaporatorcheck Heating surface0.1m² Rotor sizesDia. 33,6x 500 mm With jacketcheck Rotor with fixed bladescheck Number of stages on rotor:1 Number of blades2 Motoreurostar kika labortechnik With variable speed drivecheck Rotor speed50-2000rpm With condensercheck Heating surface0,05m² MaterialGlass Information Mounted on framecheck Total height3,75 m Floorspace1,6x1mFilm evaporatorsJenaer GlasColumns > Film evaporatorsBrand > Jenaer Glas What you can expect from Foeth: -- Machine is in working condition -- At a reduced price compared to new -- Ready for shipping to any destination worldwide -- You are welcome to inspect the machine in Barneveld, The Nethe ...

General SKULW002 LocationNetherlands MakeAPI Heat Transfer TypeSCHMIDT SIGMASTAR - Eindampfanlage No.2016-0307-1-B Year of construction2016 Main Features MaterialStainless steel Motor18 KW Specified Features - Film evaporator Film evaporatorcheck Capacity2.725 kg/h MaterialStainless steel 1.4301 (304), Stainless steel 1.4404 Information With switchgearcheck (as is) Floorspace8,5x5 m Total height5 m Extra SpecificationsThe specified Schmidt SIGMASTAR evaporation system with an evaporation capacity of 2.725 kg/h is designed for the concentration of adhesive water from an initial concentration of 8% TS to a final concentration of 36% TS. The system is designed as a multi-stage evaporator. The product is pumped from the buffer tank into the sump of the plate evaporator of the first stage. The product rises in the spaces between the plates and is concentrated in the process ...

Concentrate evaporator - unused- This evaporator consists of 3 parts, which switched in series are: -Evaporator (58 pipes) -Capacitor (19 tubes) -Capacitor (48 tubes) Expiration: 32% concentrated Cheese Whey comes in a dry work of a cheese dairy. This vaporizer is the final link in the chain of drying and provides a high concentration in the final product by removing the remaining water in the dryer and creating protein powder. The falling film evaporators can be visited at any time! Since it is still unused, it is in top condition!

Offered here is a vacuum evaporator for wastewater from Korrotherm, model K750. Suitable for chloride-containing and aggressive wastewater Completely technically overhauled and not put into operation since then - like new The Korrodest evaporator system provides a fully automatic low-temperature evaporator system, which is largely autonomous, i.e. without permanent monitoring. by operating personnel. The plant is designed for the processing of diluted, even chloride- and sulphur-containing rinsing water from surface technology. The incurred Rinsing water is thermal, in a vacuum of about 50 mBar, corresponding to about +35°C evaporated and separated into two components. On the one hand, in the distillate, which can be produced up to 98% of the volume flow rate, and on the other hand into the concentrate, which can be concentrated to a density of approximately 1.3 – 1.35  ...

Stock number: U2386-1 Used rotary film evaporator by Corning (UK). Evaporator has 50 l rotating evaporating flask, driven via gearbox with adjustable rotation and el motor 0.37 kW, 1425 rpm, 380 V, 50 hz. Ex design (EExdIIBT4). Heating of flask by coil inside the bath tank - can be used on steam, oil or water. Height of bath adjustable hydraulicaly by manually operated pump. Machine is equipped with two receiving tanks, condensator and all connections. All glass is made by QVF.

Used batch evaporator for jam production, capacity 300 L, made by Spomasz Pleszew, type WWA20. New 1991. Operating pressure 0.3 MPa, design temperature 133 ° C. Weight 1030 kg.

Voltage: 230/400 V Compressor FRASCOLD type D 315 power 15.36 m3 / h Evaporator GEA Küba type DZB 071 Ask for an offer iNTER-WiBA Sp.J. ul. Krakowska 263 PL 43-305 Bielsko-Biala USt-IdNr.: PL547-17-47-669 tel. 0048/33 812 58 60 fax. 0048/33 812 58 36

Used vacuum evaporator, model WWA 14, capacity 300 L.

HELPMAN THOR-A 524-7 Product number: M19-2276 Cooling capacity: 21.9 kW Number of fans: 2 Lamella distance: 7 mm Defrost: Glycol Refrigerant: CO2/R744 Rated voltage: 400 Volt Engine power: 2 x 3.2 kW Dimensions: 2550 x 1200 x 1100 mm Weight: 255 kg Year of construction: 2009 Units in stock: 8 piece (s) Price: request a quote Very neat Helpman CO2 evaporator with 2 EC fans and glycol defrosting circuit. Listed capacity in an evaporation temperature of-4 ° c and 6 k.

Evaporator KUBA Type: SGBE 141 Cowl power: 29.2 kW at DT8 Lamel distance: 7 mm With electric heating Number of fans: 1 x 710 mm Dimensions: 1600 x 1300 x 1400 mm Cold agent: Freon Volume: 44 ltr Number of pieces in stock: 5 Reference number: CH149 Condition: Used in good condition Price on request, We have many other refrigeration systems : Bitzer,Copeland,Frascold,Lunite,Kueba,Guentner,Eco,Alfa-Laval,Goedhart ,Helpman

Vacuum evaporator,stainless steel,Landteknikk. excl. pumps and steering.

Evaporator system,stainless steel,Anhydro,3000 l / h water evaporation.

USED HASTELLOY 3000 LITRES EMB-300 BACHILLER EVAPORATOR REF.: C3045 MANOFACTURED BY: BACHILLER MODEL: EMB - 300 MATERIAL: HASTELLOY VOLUME: 3000 LITRES VESSEL PRESSURE: -1 / 6 bar / 150 ºC JACKET PRESSURE: 6 bar / 150 Cº. MOTOR REDUCER: 45 KW / 34,3 rpm MAN HOLE ELECTRICAL PANEL INTERNAL DIAMETER: 1400 mm WITH DOCUMENTATION

KÜBA evaporator type SHB 127 with 3 fans diameter 710mm, lamellar distance 8mm, with new defrost heater. 107 liters capacity. 3 pcs.

Shock freezing evaporator EKO with 3 fans, type ESL 63.33.12Y, lamellar distance 12mm, defrost heater, fan diameter 630mm,

GOEDHART DU-S Brand:GOEDHART Type:DU-S Stock number:M23-2477 Cooling capacity:80.0 kW Application:Freezing / Cooling Number of fans:3 Fin spacing:12 mm Defrost:Hot gas Refrigerant:R717 (NH3/Ammonia) Refrigerant Content:222 kg Voltage:400 Volts Motor power:3x 3 kW Dimensions:4010 x 2434 x 1050 mm Weight:2,000 kg Year:1996 Number in stock:6 piece(s) Price:Quotation request Description: Good dual discharge Goedhart ammonia evaporator with 3 fans. Mentioned capacity at an evaporating temperature of -38°C and 7K. Visit our website: used-refrigeration

Alfa-Laval evaporator for blast freezer or freezer. Make Alfa-Laval with 3 fans 560mm, 12 mm fin spacing, Type: ILBEH563GD, Hot gas defrosting, New unused.

Used Helpman LEX 26-E evaporator on Freon with electric defrost. Complete with 3 ATB RFT0,25/4-7 fan - 50/60 Hz - 0,25 kW - 1410/1710 RPM - diameter 457 mm and a total airflow of 14.000 m³/h. Brand: Helpman Type: LEX 26-E kW: 22,8 Refrigerant: Freon Number of Fans: 3 Fin Space in mm: 7 Defrosting: Electric m³/h: 14.000 Sizes: 2650x740x670 mm (LxWxH) Volume: 30,9 dm³ Weight: 159 kg Amount in stock: 6

RAFFEL NH3 – 722 m² Brand:RAFFEL Type:NH3 – 722 m² Stock number:M23-2490 Cooling capacity:120 kW Application:Freezing Number of fans:3 Fin spacing:12 mm Defrost:Hot gas Refrigerant:R717 (NH3/Ammonia) Dimensions:5100 x 2260 x 5060 mm Number in stock:2 piece(s) Price:Quotation request Description: Nice Raffel Ammonia evaporator with 3 fans. Heat exchange surface is 722 m2. Visit our website: used-refrigeration

RAFFEL NH3 – 648 m² Brand:RAFFEL Type:NH3 – 648 m² Stock number:M23-2489 Cooling capacity:105 kW Application:Freezing Number of fans:Frieren Fin spacing:12 mm Defrost:Hot gas Refrigerant:R717 (NH3/Ammonia) Dimensions:4650 x 2250 x 5080 (5340) mm Number in stock:2 piece(s) Price:Quotation request Description: Nice Raffel Ammonia evaporator with 3 fans. Heat exchange surface is 648 m2. Visit our website: used-refrigeration

RAFFEL NH3 – 554 m² Brand:RAFFEL Type:NH3 – 554 m² Stock number:M23-2493 Cooling capacity:90.0 kW Application:Freezing Number of fans:3 Fin spacing:12 mm Defrost:Hot gas Refrigerant:R717 (NH3/Ammonia) Dimensions:4600 x 2000 x 5000 mm Number in stock:1 piece(s) Price:Quotation request Description: Nice Raffel Ammonia evaporator with 3 fans. Heat exchange surface is 554 m2. Visit our website: usded-refrigeration

RAFFEL NH3 – 378 m² Brand:RAFFEL Type:NH3 – 378 m² Stock number:M23-2491 Cooling capacity:60.0 kW Application:Freezing Number of fans:2 Fin spacing:12 mm Defrost:Hot gas Refrigerant:R717 (NH3/Ammonia) Dimensions:3900 x 1850 x 5060 mm Number in stock:1 piece(s) Price: Quotation request Description: Nice Raffel Ammonia evaporator with 2 fans. Heat exchange surface is 378 m2. Visit our website: used-refrigeration

RAFFEL NH3 – 276 m² Brand:RAFFEL Type:NH3 – 276 m² Stock number:M23-2492 Cooling capacity:45 kW Application:Freezing Number of fans:2 Fin spacing:12 mm Defrost:Hot gas Refrigerant:R717 (NH3/Ammonia) Dimensions:3200 x 1850 x 5160 mm Number in stock:1 piece(s) Price: Quotation request Description: Nice Raffel Ammonia evaporator with 2 fans. Heat exchange surface is 276 m2. Visit our website: used-refrigeration

Used evaporator made by Spomasz Pleszew type DUO CAA-9a.

Evaporator Küba SGB 073C, YOC 2006 Capacity 16.3 liters Three fans sucking 630 watts Velvet Injected Valve Built-in Suitable for TK or plus cooling In very good condition

Evaporator Küba SCBE 082C, YOC 2006 Capacity 16.7 liters Two fans sucking 210 watts/pc. Velvet Injected Valve Built-in Defrost heater in block as well as in cup, 5KW Suitable for TK or plus cooling In very good condition

General SKU212T513 LocationBarneveld MakeBuss Mach.No.60429-1 Pressure Working pressure3.2 Bar Vacuum possiblecheck Working pressure vapour evaporator9 Bar Main Features Surface5.7 m2 Specified Features - Falling film evaporator Condenser:trickling film cooler MakeBuss SMS Mach.No.60429-1 Year of construction1994 Heating surface5,7 m² Tube capacity400 Ltr. Number of tubes:61 Tube diameter25 mm Tube length1250 mm Shell capacity65 Ltr. Max. temperature-10/200 °C MaterialStainless steel 1.4571 (316Ti) Information Year of construction1994 Extra Specificationswith vessel: ø600x1000 mm, 280 ltr., outlet: DN80Falling film evaporatorsBuss-SMSColumns > Falling film evaporatorsBrand > Buss-SMS What you can expect from Foeth: -- Machine is in working condition -- At a reduced price compared to new -- Ready for shipping to any destination worldwide -- You are welcome to ...

Glycol cooler, water cooler, water evaporator, Küba SGB 132, 70 liter capacity, two fans 710mm diameter, 920 red/min. 2.2 Kw. From a Fruit Warehouse, CA Warehouse In very good condition and fully functional. Fan very robust, south electric, 2.2Kw.

Cool KUBA Type: SGK 56-F82 Cooling capacity: 28.3 kW at DT8, 22.6 kW at DT7 Fin spinning: 10 mm Fans: 2 x 560 mm Dimensions: 2600 x 900 x 1000 mm Refrigerant: Freon Volume: 45 L Pieces in stock: 6 Stock number: CH 215 Condition: Used We have more cooling equipment, coolers, condensers, compressors, Bitzer, GEA KUBA, GUNTNER, Alfa Laval, Frascold - check our others offers.

USED MOINPSA STAINLESS STEEL 75 LITRES LEVEL CONTROL REFLUX COLUMN REF.: C9224 General characteristics: Manufactured by MOINPSA Material Stainless steel Year built 2011 Weight 98 kg

Cool Guntner Type: GHNE 065C / 28 Cooling capacity: 30 kW with DT8, 23 kW with DT7 Fin spinning: 8 mm Electric heaters Number of fans: 2 x 650 mm Device dimensions: 3000 x 750 x 1000 mm Refrigerant: Freon Capacity: 46 L Stock status: 5 pieces Stock number: CH 236 Condition: Used Price on request, We have many other Kealteanlagen : Bitzer,Copeland,Frascold,Lunite,Kueba,Guentner,Eco,Alfa-Laval,Goedhart ,Helpman

Cool Goedhart Type: VCI-B 82506E Cooling capacity: 26 kW at DT8, 19kW at DT7 Fin spinning: 6 mm Electric heaters Number of fans: 2 x 500 mm Device dimensions: 2450 x 1250 x 700 mm Refrigerant: Freon Capacity: 38 L Stock status: 1 piece Stock number: CH 241 Condition: Used Price on request, We have many other Kealteanlagen : Bitzer,Copeland,Frascold,Lunite,Kueba,Guentner,Eco,Alfa-Laval,Goedhart ,Helpman

Cooler CUBA Type: SGBE 56-F82 Cooling capacity: 32.8 kW at DT8, 26.2 at DT 7 Surface: 193 m2 Air flow: 14 600 m3/h Fin spinning: 7 mm Electrical heating Fans: 2 x 560 mm Dimensions: 2700 mm x 900 mm x 1000 mm Refrigerant: Freon Volume: 44.7 l Pieces in stock: 3 Reference number: CH221 Condition: Used in good condition Price on request, We have many other Kealteanlagen : Bitzer,Copeland,Frascold,Lunite,Kueba,Guentner,Eco,Alfa-Laval,Goedhart ,Helpman

Used 2-stage evaporation station UNIPEKTIN. New 1997. 1-stage aroma trap, 2-stage concentration. For apple juice (cloudy / filtered): Input quantity: 4212 kg / h / 2840 kg / h Input dry pulp: 12 / 17.8% Temp. entrance: 15/45 degrees C. Water evaporation: 3500 kg / h Output quantity: 2,840 / 712 kg / h Temp. output: 50/55/25 degrees C. Initial dry mass: 17.8 / 71% Aroma (15x): 26.8 l / h Temp. aroma: 7 degrees C. Steam consumption: 1450 kg / h Fresh water consumption: 5 m3 / hour

Blast Freezer, shock freezer EKO with 4 fans, type ESL 63.42.12D, lamellar distance 12mm, defrost heater, fan diameter 630mm

Used evaporating machine for milk and caramel masses by Spomasz Pleszew type DUO CAA-9. After a complete overhaul in 2018, it meets all the parameters as DUO CAA-18. Technical data: - working capacity of one boiler: 50 dm3, V = 0.050m3 - total capacity of one boiler: 70 dm3, V = 0.070m3 - heated steam at a pressure of: 8 Bar - steam capacity: 274 kg / h - power demand: 4.1 kW - upper agitator: 74 rpm - efficiency of the milk mass: 220 kg / h, water caramel: 180 kg / h - a used motor-reducer from the Italian company Bonfigioli - inner coat made of acid resistant steel - external coat made of stainless steel - insulation shell made of acid-proof steel, tightly welded

SECOND-HAND STAINLESS STEEL STEAM BOYLER MM. 1400X600

Cool Guntner Type: S-CPGHN 080.2F/210-AU2/18P. E Fin spinning: 10 mm Fans: 2x800 mm Dimensions: 400x170x140 mm Refrigerant: CO2 Volume: 99.8 l Quantity in stock: 2 Reference number: CH 405 Condition: Used in good condition

Evaporation Boat, 10 pieces 3M 2C-E-R4 Type 4 Dimensions: 1130 x 35 x 9 mm Material: 8160060 Lot: 80822715 New ! Dimensions ( packaging ): 250 x 180 x 40 mm

Cool Guntner Type: S-GHN080.2H/310-E Cooling capacity: 100 kW at DT8, 80 kW at DT7 Surface: 469 m2 Air flow: 53 910 m3/h Fin spinning: 10 mm Electric heaters Fans: 3 x 800 mm Dimensions: 5600 x 1050 x 1300 mm Refrigerant: Freon Volume: 167.5 l Waga: 750 kg Pieces in stock: 2 Reference number: CH 391 Condition: Used in good condition Price on request, We have many other equipment : Bitzer, Copeland, Frascold, Lunite, Kueba, Guentner, Eco, Alfa-Laval, Goedhart, Helpman

Cool Guntner Type: GHN080.2F/210-E Cooling capacity: 54 kW at DT8, 43 kW at DT7 Surface: 235 m2 Air flow: 37 320 m3/h Fin spinning: 10 mm Electric heaters Fans: 2 x 800 mm Dimensions: 4000 x 900 x 1300 mm Refrigerant: Freon Volume: 86.5 l Waga: 460 kg Items in stock: 3 Reference number: CH 392 Price on request, We have many other equipment : Bitzer, Copeland, Frascold, Lunite, Kueba, Guentner, Eco, Alfa-Laval, Goedhart, Helpman

Cool Guntner Type: S-GHN 040C/312-E Cooling capacity: 16 kW at DT8, 13 kW at DT7 Fin spinning: 12 mm Electric heaters Fans: 3 x 400 mm RPM: 2840 Dimensions: 2950 x 950 x 600 mm Refrigerant: Freon Volume: 28 L Weight: 135 kg Pieces in stock: 2 Reference number: CH372 Condition: Used Price on request, We have many other equipment : Bitzer, Copeland, Frascold, Lunite, Kueba, Guentner, Eco, Alfa-Laval, Goedhart, Helpman

Cool Guntner Type: GHN 066A/37 Cooling capacity: 36.6 kW at DT8, 29 kW at DT7 Fin spinning: 7 mm Electric heaters Fans: 3 x 660 mm RPM: 870/650 Dimensions: 4300 x 750 x 1000 mm Refrigerant: Freon Volume: 51 L Weight: 330 kg Pieces in stock: 2 Reference number: CH371 Condition: Used

Cool GEA CUBA Type: SGK 63-F82 Cooling capacity: 34.6 kW at DT8, 27.6 kW at DT7 Surface: 187 m2 Air flow: 17 000 m3/h Fin spinning: 12 mm Gas defrosting Fans: 2 x 630 mm Dimensions: 3500 x 900 x 1000 mm Refrigerant: Freon Volume: 73 l Pieces in stock: 3 Reference number: CH 382 Condition: Used in good condition Price on request, We have many other equipment : Bitzer, Copeland, Frascold, Lunite, Kueba, Guentner, Eco, Alfa-Laval, Goedhart, Helpman

Cool CUBA Type: SGBE 63-F62 Cooling capacity: 33.3 kW at DT8, 26.6 kW at DT7 Air flow: 16 800 m3/h Surface: 195 m2 Fin spinning: 7 mm Electric heating Fans: 2 x 630 mm Dimensions: 3020 x 850 x 1000 Refrigerant: Freon Volume: 45 L Pieces in stock: 5 Stock number: CH 328 Condition: Used Price on request, We have many other equipment : Bitzer, Copeland, Frascold, Lunite, Kueba, Guentner, Eco, Alfa-Laval, Goedhart, Helpman