150 M³ Rezervoar Za Gasilno Vodo nakup rabljenega (119.391)

Stanje: rabljeno, številka stroja/vozila: LC521, Used PROCOMAC Bottling Line for Still and Sparkling Water – Up to 12,000 Bottles per Hour We offer a complete bottling line for natural and carbonated mineral water, specifically designed to meet the complex demands of technicians and industry experts. This solution handles bottle formats from 0.5 to 2 liters and can process up to 12,000 bottles per hour, delivering high reliability and outstanding performance. SIPA Blow Molding Machine and Preform Handling The SIPA SFR 12 blow molding machine, built in 2000, initiates the production process. It efficiently handles preforms with a tipper and an elevator-orientator. Additionally, the integrated chilling unit and four mold sets enable the precise and flexible production of bottles in various sizes, ensuring smooth operations at the beginning of the production line. PROCOMAC Monoblock: The Core of the System The PROCOMAC monoblock integrates three essential bottling functions into a single system. Firstly, the PROCOMAC GRIPSTAR 2R rinser thoroughly cleans the bottles and prepares them for filling. Next, the PROCOMAC FILLSTAR PET filler quickly and precisely fills the bottles with still or carbonated mineral water. Finally, the PROCOMAC 10-head PICK & PLACE capper seals the bottles securely and efficiently. Additionally, the carbonator and CIP (Clean-In-Place) system ensure compliance with hygiene standards and facilitate maintenance. These components not only increase the efficiency of the monoblock but also guarantee reliable performance throughout production. Conveying and Packaging Systems The PELACCI P.13.8.5 cap elevator supplies the line with caps continuously, ensuring zero interruptions. The PE ROLLMATIC CI 540 12T labeller applies labels accurately to bottles of various formats. Next, the ZAMBELLI LFT 50 shrink packer wraps bottles into bundles, while the COMAG H 55/1 handle applicator adds handles to the packs for easy transportation. The LEVATI ARTIS palletiser arranges the bundles precisely on pallets. The ROBOPAC HELIX HS 30 stretch wrapper secures the loads for safe transport. Finally, the EIDOS labelling system prints and applies labels directly on the production line, enabling full customization to meet diverse production requirements. Conveyor Belts for Optimal Material Flow The conveyor system ensures efficient material flow throughout all production stages. Air conveyors transport bottles rapidly, while specialized belts transfer bundles and pallets seamlessly between different sections of the line. This enables a continuous and smooth workflow, significantly reducing production downtime. Current Status and Availability Blsdpevgu Tyefx Altjk This used PROCOMAC bottling line for still and sparkling water up to 12,000 bottles per hour operates efficiently and will remain in operation until April 2025, when it will be dismantled and replaced. We recommend ...

Leto izdelave: 2002, stanje: zelo dobro (rabljeno), DANTECH/OMEGA ice water cooler for glazing Capacity: 700 liters. Tank dimensions: 131 x 90 x 60 cm. Overall dimensions: Length: 215 cm. Width: 105 cm. Height: 270 cm. Ready for immediate delivery. Bodjhg Tryepfx Altjlk

Stanje: rabljeno, Funkcionalnost: popolnoma funkcionalen, Leto izdelave: 2011, številka stroja/vozila: 2443848, nosilnost: 200 kg, dvižna višina: 13.000 mm, dolžina platforme: 1.200 mm, širina platforme: 960 mm, skupna masa: 6.700 kg, transportna dolžina: 4.400 mm, transportna širina: 1.500 mm, transportna višina: 2.080 mm, vrsta goriva: električni, velikost pnevmatike: 0,60 x 0,19 m, barva: modra, Tehnični podatki Leto izdelave: 2011 Motor: električni Delovna višina: 15,00 m Višina platforme: 13,00 m Dimenzije platforme (D x Š): 1,20 m x 0,96 m Skupne dimenzije (D x Š x V): 6,05 m x 1,50 m x 1,97 m Stranski doseg: 7,60 m Prečkana višina: 7,00 m Območje vrtenja košare: +70° / -70° Horizontalno vrtljiv koš: +70° / -70° Zasuk košare: 140° Območje vrtenja: 355° Nosilnost: 200 kg / 2 osebi Bljdpfoyqz Atox Altsk Notranji obračalni radij: 1,87 m Zunanji obračalni radij: 3,96 m Zunanji obračalni polmer: 4,82 m Vozna hitrost: 0,6 - 5,0 km/h Uporaba na prostem: 45 km/h Maksimalna plezalna sposobnost: 25% Dovoljen naklon: 5% ali 3% Kapaciteta baterije: 300 Ah / 2x224V Teža: 6.700 kg Popolnoma delujoč, običajne sledi uporabe

Leto izdelave: 2026, stanje: novo, Funkcionalnost: popolnoma funkcionalen, New unit with 12-month warranty Benefits of chilled ice water: + Consistently low discharge water temperatures + Precise year-round dough temperature control + Rapid hydration when mixing without the need for ice + Improved dough texture thanks to freshly chilled, liquid ice water + Exact dosing possible using water mixing and dosing devices + All water-bearing components made from stainless steel and maintenance-free + Hygienically impeccable, clean drinking water Langheinz ice water systems feature: + Constantly low water temperatures + High-performance refrigeration units + Cooling systems with expansion valves + Electronic ice bank controllers + Stainless steel chill evaporator + Multiple stainless steel water heat exchangers + Insulated stainless steel ice water bath + Drain tap in the ice water bath + High flow rate + Compact dimensions + Easy-to-clean surface structure + Low energy consumption SPECIAL accessories, available optionally at extra cost: - Wall bracket made from stainless steel (for model L60 + L100): + €319 net - Machine table (for model L100): + €389 net - 3-way switching valves --- for water mixing and dosing devices with only two inlets (cold / warm) + €349 net Technical data: - Batch size (recommended): up to 30 litres - Continuous output*: 60 litres/hr Bledpsivdvcjfx Altjk - Peak cooling capacity*: 180 litres/hr - Ice bank: 20 kg - Cooling capacity (CECOMAF): 1.189 kW - Electrical connection: 230 V - 50 Hz - Power consumption: 575 W - Water connection: 1/2 inch - Water flow at 2 bar: 8 litres/min - Dimensions: 950 x 530 x 560 mm (LxWxH) - Net weight: 60 kg - Energy consumption at 100 litres: 1 - 2 kWh * at +17.5°C inlet and +2.5°C outlet

Leto izdelave: 2026, stanje: novo, Funkcionalnost: popolnoma funkcionalen, New machine with 12 months warranty Advantages of chilled ice water: + consistently low discharge water temperatures + precise dough temperature control all year round + rapid swelling during mixing without the need for ice + improved dough texture thanks to freshly chilled, liquid ice water + accurate dosing possible using water mixing and metering devices + water-bearing components made of stainless steel, maintenance-free + hygienically flawless, clean drinking water Langheinz ice water systems stand out for: + consistently low water temperatures + high-performance refrigeration units + refrigeration systems with expansion valves + electronic ice bank controllers + stainless steel evaporators + multiple stainless steel water heat exchangers + insulated stainless steel ice water bath + drain valve in the ice water bath + high flow rates + compact dimensions + easy-to-clean surface structure + low energy consumption Special accessories, optionally available at extra cost: - Stainless steel wall bracket (for models L130 & L170): + €499 net - Machine table (for models L130 & L170): + €589 net - 3-way diverter valves --- for water mixing and metering devices with only 2 inlets (cold / hot) + €349 net Technical Data: - Batch size (recommended): up to 40 liters - Continuous output*: 70 liters/hour - Peak cooling output*: 230 liters/hour - Ice bank: 30 kg - Cooling capacity (CECOMAF): 1.189 kW - Connection values: 230 V - 50 Hz - Power consumption: 670 W - Water connection: 1/2 inch - Water flow at 2 bar: 15 liters/min - Dimensions: 560 x 590 x 900 mm (LxWxH) - Net weight: 60 kg - Energy consumption for 100 liters: 1.5 - 2.5 kWh * at +17.5°C inlet and +2.5°C outlet Bledpfx Ajivdvkjltok

Leto izdelave: 2026, stanje: novo, Funkcionalnost: popolnoma funkcionalen, New unit with 12 months warranty Advantages of chilled ice water: + Consistently low discharge water temperatures + Precise dough temperature control year-round + Rapid hydration when mixing without ice + Smoother doughs thanks to freshly chilled, liquid ice water + Exact dosing possible via water mixing and dosing device + Water-carrying components made of stainless steel, maintenance-free + Hygienically impeccable, clean drinking water Langheinz ice water systems feature: + Constantly low water temperatures + High-performance refrigeration machines + Refrigeration systems with expansion valves + Electronic ice bank controllers + Stainless steel cooling evaporators + Multi-stage stainless steel water heat exchangers + Insulated stainless steel ice water bath + Drain tap in the ice water bath + High flow capacity + Compact dimensions + Easy-to-clean surface structure + Low energy consumption Blodoivdu Uopfx Altsk SPECIAL accessories, optionally available at extra cost: - Wall bracket in stainless steel (for model L60 + L100): + €319,-- net - Machine table (for model L60): + €399,-- net - 3-way switching valves --- for water mixing and dosing devices with only 2 inlets (cold / hot) + €349,-- net Technical specifications: - Recommended batch size: up to 15 liters - Continuous output*: 50 liters / hr - Peak cooling output*: 90 liters / hr - Ice bank: 10 kg - Cooling capacity (CECOMAF): 1.013 kW - Electrical connection: 230 V - 50Hz - Power consumption: 575 W - Water connection: 1/2 inch - Water flow at 2 bar: 8 liters / min - Dimensions: 650 x 400 x 560 mm (LxWxH) - Net weight: 50 kg - Energy consumption per 100 liters: 1 - 2 kWh * at +17.5°C inlet and +2.5°C outlet

Leto izdelave: 2026, stanje: novo, Funkcionalnost: popolnoma funkcionalen, New unit with 12-month warranty Advantages of chilled ice water: + Consistently low discharge water temperatures + Precise year-round dough temperature control + Rapid hydration during mixing without ice + Smoother doughs due to freshly chilled, liquid ice water + Accurate dosing possible via water mixing and dosing unit + All water-bearing components made of stainless steel, maintenance-free + Hygienically flawless, clean drinking water Langheinz ice water systems feature: + Consistently low water temperatures + High-performance refrigeration units + Refrigeration systems with expansion valve + Electronic ice bank controllers Bsdpfx Asivdvvjltjlk + Stainless steel evaporators + Multiple stainless-steel water heat exchangers + Insulated stainless steel ice water bath + Drain valve in the ice water bath + High flow capacity + Compact dimensions + Easy-to-clean surface structure + Low energy consumption OPTIONAL special accessories, available at extra cost: - Stainless steel wall bracket (for models L130 + L170): + €499 net - Machine table (for models L130 + L170): + €589 net - 3-way changeover valves --- For water mixing and dosing units with only 2 inlets (cold / warm) + €349 net Technical data: - Batch size (recommended): up to 50 liters - Continuous output*: 115 liters per hour - Peak cooling capacity*: 330 liters per hour - Ice bank: 40 kg - Cooling capacity (CECOMAF): 1.86 kW - Refrigerant: R290 (new 2021 standard!) - Electrical connection: 230 V - 50Hz - Power consumption: 1.45 kW - Water connection: 1/2 inch - Water flow at 2 bar: 20 liters per minute - Dimensions: 560 x 590 x 900 mm (LxWxH) - Net weight: 80 kg - Energy consumption for 100 liters: 1.5 - 2.5 kWh * at +17.5°C inlet and +2.5°C outlet

Leto izdelave: 2026, stanje: novo, Funkcionalnost: popolnoma funkcionalen, New unit with 12-month warranty Advantages of chilled ice water: + Consistently low water charging temperatures + Precise dough temperature control all year round + Rapid swelling during mixing without the need for ice + Softer doughs thanks to freshly chilled, liquid ice water + Precise dosing possible with water mixing and dosing devices + All water-conducting parts are made of stainless steel and require no cleaning + Hygienically flawless, clean drinking water Langheinz ice water systems feature: + Constantly low water temperatures + High-performance refrigeration units + Refrigeration systems with expansion valves + Electronic ice bank controllers + Stainless steel refrigeration evaporators + Multiple stainless steel water heat exchangers + Insulated stainless steel ice water bath + Drain tap in the ice water bath + High flow capacity + Compact dimensions + Easy-to-clean surface texture + Low energy consumption Bedjivdv Dopfx Altelk SPECIAL accessories, optionally available for an extra charge: - 3-way changeover valves --- for water mixing and dosing units with only two inlets (cold / hot) + €349,-- net Technical data: - Batch size (recommended): up to 70 litres - Continuous capacity*: 230 litres / hour - Peak cooling capacity*: 500 litres / hour - Ice bank: 60 kg - Cooling capacity (CECOMAF): 3.978 kW - Electrical connection: 400 V - 50Hz - 1Ph - Power consumption: 2.84 kW - Water connection: 1/2 inch - Water flow at 2 bar: 25 litres / min - Dimensions: 1170 x 630 x 770 mm (LxWxH) - Net weight: 145 kg - Energy consumption per 100 litres: 1.5 - 2.5 kWh * at inlet temperature +17.5°C and outlet temperature +2.5°C

Stanje: dober (rabljeno), 1500-litrski rezervoar za shranjevanje segretega olja, ki se je uporabljal v evropski tovarni za predelavo hrane, je bil povezan s cvrtnikom GEA. Ogreva se električno in ima dvojno steno za izolacijo. Blodpfx Ajzkuxmeltek

Stanje: rabljeno, Leto izdelave: 1993, With shallow-conical bottom, shell and cone cooling zone, manway, sampling tap, and central outlet. Machine (additional information): upright, coolable stainless steel tank Gross volume: 10,474 l Length: 2,100 mm Width: 2,100 mm Bedpfxjvcqnxo Altslk Height: 3,750 mm Material: Stainless steel 1.4301 Position: standing on feet Equipment: Shallow-conical bottom, shell and cone cooling zone, manway, sampling tap, central outlet.

Stanje: rabljeno, Leto izdelave: 2019, Machine (additional): vertical stainless steel tank Bljdpfsvcqppsx Altek Capacity approx.: 41 hl Permissible operating pressure: 3 bar Permissible operating temperature: 50 °C Material: stainless steel Orientation / position: vertical Base construction: 4 x dished feet Equipment: resistance thermometer (E+H); safety valve; vacuum valve; manway, lateral; sampling valve Weight: 900 kg

Stanje: rabljeno, Leto izdelave: 1993, With flat-conical bottom, shell and cone cooling zone, manway, sampling valve, and central outlet. Machine (additional info): Upright, coolable stainless steel tank Gross volume: 12,242 l Length: 2,300 mm Width: 2,300 mm Height: 3,550 mm Material: Stainless steel 1.4301 Position: standing on feet Blodpfxsvcq Dye Altjk Equipment: Flat-conical bottom, shell and cone cooling zone, manway, sampling valve, central outlet.

Leto izdelave: 2000, stanje: rabljeno, Nizko stožčasti inox fermentacijski tank za približno 40 hl neto prostornine. Stroj (dodatno): hladilni tank Bjdpfx Aow Td D Ejltelk Bruto prostornina: 4219 l Dovoljena delovna temperatura: 20 °C Dolžina: 2000 mm Širina: 2000 mm Višina: 1800 mm Material: nerjaveče jeklo Oprema: revizijska odprtina na plašču, pršilna glava s cevjo za pršenje in slepa kapica DN 25, iztočni ventil, Pt 100 za avtomatsko regulacijo temperature, višinsko nastavljive cevne noge; magnetni ventil za regulacijo temperature

Stanje: rabljeno, Izoliran okvirni smetanin rezervoar iz nerjavečega jekla. Z mešalom ter grelnimi/hladilnimi površinami. Prostornina: 125 hl Naprava (dodatek): ogrevan rezervoar iz nerjavečega jekla z mešalom Prostornina: 12.500 l Širina: 3,1 m Višina: 4,2 m Material: nerjaveče jeklo Položaj: prosto stoječe Osnovna zgradba: cilindrični rezervoar na cevnih nogah Bsdpfx Asxwy Hcjltolk Oprema: izolacija z varjeno oblogo iz nerjavečega jekla, zgoraj človekova odprtina in sidrno mešalo, vzorčevalnik

Leto izdelave: 1969, stanje: rabljeno, 2 rezervoarja na stojnem podstavku, prostornina 10,5 hl, obratovalni tlak 3 bar, z armaturami. Stroj (dodatek): 2 x rezervoarja Volumen: 10 hl Maks. tlak: 3 bar Bledpfx Aexwy Umjltjk Temperatura: 10 °C Širina: 1,2 m Višina: 1,9 m Material: nerjavno jeklo Postavitev: stoječa Osnovna konstrukcija: na stojnem podstavku Oprema: 1 zgornja revizijska odprtina, 2 zgornja priključka, 2 bočna iztoka, 1 plinska cev in 1 odvzemnik vzorcev. Vsi priključki z armaturo.

Leto izdelave: 2000, stanje: rabljeno, Inoks fermentacijski tank s cca 20 hl neto prostornine; hlajenje z dvojnim plaščem na obodu in dnu; plitko stožčasta oblika; tlačno nerezervoar; stalno zavarjeno izoliran. Stroj (dodatno): hlajen rezervoar Bruto prostornina: 2422 l Dovoljena obratovalna temperatura: 20 °C Dolžina: 1700 mm Širina: 1700 mm Višina: 2000 mm Material: nerjaveče jeklo Oprema: kontrolna odprtina na obodu, pralna glava s cevjo in slepim pokrovom DN 25, izpustna loputa, termometer in Pt 100 za avtomatsko regulacijo temperature, po višini nastavljive cevne noge; magnetni ventil za regulacijo temperature. Bjdpfx Aew Td Drsltslk

Stanje: rabljeno, Leto izdelave: 2007, Prominent water treatment system, consisting of: 1. Softening: Raw water is supplied to the twin softener. Only one vessel is in operation at a time, while the other is in regeneration or on standby. In the softener, calcium and magnesium ions are replaced by sodium. The system is equipped with a volume counter, which switches to the other vessel once the preset quantity has been reached. Regeneration is carried out with brine from the brine tank. The residual hardness at the outlet is 0 °dH. 2. Reverse Osmosis: The reverse osmosis unit fills the permeate tank with demineralized water (permeate). Depending on raw water quality, water temperature, membrane condition, and correct system settings, different conductivity levels and operating pressures are achieved. Upon commissioning, the following flow rates are set: permeate 600 l/h, concentrate 200 l/h, corresponding to a yield of 75%. 3. Permeate Tank and Ozonation: The non-pressurized 500 l permeate tank is equipped with adjustable level control. For ozone treatment, the water in the permeate tank circulates through an adjustable ozone dosing point. Ozone is produced by the ozone generator via silent electrical discharge from air and is available as an ozone/air mixture. Air and un-dissolved ozone rise to the top of the permeate tank and are discharged via the residual ozone destructor. For monitoring, redox potential and ozone measurements are taken downstream of the centrifugal pump. Ozone dosage is set via the touch panel. Control can be selected by either redox potential or ozone concentration. Additional machine information: water softening, reverse osmosis unit, ozone disinfection Permeate output: 600 l/h Concentrate output: 200 l/h Ozone output: 5 g/h Max. operating pressure: 16 bar Power: 2 A Voltage: 230 V Frequency: 50 Hz Water supply: < 5 bar (cooling water) Compressed air: 5.5–6.5 bar (max. 10 bar); max. 0.37 Nm³/h Operation/control: Simatic S7-300, touch panel Installation: free-standing Base frame: fully assembled on pipe frame with dished ends Equipment: reverse osmosis unit, reaction tank complete with residual ozone destructor, ozone generator, ozone gas warning device, ozone and redox transmitters, control cabinets with PLC/control system Bljdpfxew Uvdge Altsk

Stanje: rabljeno, Leto izdelave: 1976, Ležeči, ogrevani in izolirani rezervoar iz nerjavečega jekla z manometrom, varnostnim ventilom, prikazovalnikom nivoja, čistilno cevjo in ventili. Stroj (dodatno): ležeči, izoliran, za tekoči sladkor Prostornina: 20.800 l Obratovalni tlak: 1 bar Obratovalna temperatura: 20 °C Blsdpfx Aexbqgneltsk Material: nerjaveče jeklo Pozicija: ležeča Oprema: izolacija, manometer, varnostni ventil, prikazovalnik nivoja, čistilna cev, ventili

Stanje: rabljeno, Leto izdelave: 1982, Fermentacijska cisterna na nogah, neizolirana, s ploščato-koničnim dnom, hladilnim območjem na plašču in stožcu, s centralnim iztokom in revizijsko odprtino. Stroj (dodatno): hladilna cisterna Prostornina: 21.797 l Obratovalni nadtlak: 0 bar Širina: 2,95 m Višina: 4,1 m Bsdpfjxbqkmsx Altolk Material: nerjavno jeklo, neizolirano Postavitev: stoječa Oprema: ploščato-konično dno, hladilno območje na plašču in stožcu, centralni iztok, revizijska odprtina, DN50 Teža: 2.000 kg

Stanje: rabljeno, Leto izdelave: 1997, stoječi cistern iz nerjavečega jekla s klobučastimi dnomi, hladilno cono na plašču, revizijsko odprtino, ventilom za odvzem vzorcev in centralnim iztokom. Stroj (dodatek): hladilni tlačni rezervoar Vsebina: 152 hl Delovni tlak: 5 bar Delovna temperatura: 20 °C Širina: pribl. 2600 mm Blsdpjxbqlqjfx Altek Višina: pribl. 4000 mm Material: nerjavno jeklo Postavitev / pozicija: stoječe Osnovna konstrukcija: valjasta z klobučastimi dnomi. Postavljen na 4 kvadratnih nogah Oprema: hladilna spirala (plašč, 5,1 m², 1 bar, 84 l, glikol), revizijska odprtina, iztok DN65 z ročnim loputnim ventilom, vakuumski ventil DN32, varnostni ventil DN25, opazovalno steklo, ventil za odvzem vzorcev DN10, CIP cev DN40 s pršilno glavo DN25, indikator nivoja z uporabo cevi, priključek za kvas, manometer, dvigalne sponke, lestevni obroč

Stanje: rabljeno, Leto izdelave: 1986, Stroj (dodatek): 3 hladilni rezervoarji Kapaciteta: 205 hl Obratovalni nadtlak: 0,3 bar Bsdpfsxbql Djx Altslk Širina: cca 2,8 m Višina: cca 4,2 m Položaj: pokončno Osnovna konstrukcija: na nogah Oprema: Moški odprtina; Hladilne cone; Dušilni aparat; Ventil za odvzem vzorcev

Stanje: rabljeno, Stroj (dodatno): Reverzna osmoza Permeatna zmogljivost: 8000 l/h Dovod: 10000 l/h Pretok koncentrata: 2000 l/h Bedpfxoxzqulo Altolk Maks. delovni tlak: 16 bar Moč: 6,5 kW Napetost: 3 x 380 - 415 V Frekvenca: 50 Hz Voda: Dovod 2,5 - 5 bar Upravljanje / Krmiljenje: Simatic S7-300 Osnovna konstrukcija: na okvirju iz nerjavečega jekla Oprema: filtracija za dezinfekcijo; dve cevi z membranskimi moduli; doziranje kemikalij z dvema dozirnima črpalkama; centrifugalna črpalka (Lowara); različne cevi, ventili in merilna tehnika; električna omarica z zaslonom na dotik.

Stanje: rabljeno, Leto izdelave: 1999, Stainless steel storage tank, horizontal, with tank cooling system. Additional feature: coolable tank Capacity: 22,900 L Cooling jacket capacity (4x): 12 L each Operating pressure: 3 bar Operating temperature: 20 °C Length: approx. 4.7 m Width: approx. 2.7 m Height: approx. 2.9 m Material: stainless steel 1.4310 Orientation/position: horizontal Bledpovcqmzofx Altsk Base construction: 6 dished ends/feet Equipment: cooling jackets, manhole, sampling valve, max fill level probe, cleaning connection

Stanje: rabljeno, Leto izdelave: 1993, With flat-conical bottom, shell and cone cooling zone, manhole, sampling tap, yeast chute and central outlet. Machine (addition): standing stainless steel tank with cooling capability Gross volume: 8,071 l Length: 2,100 mm Width: 2,100 mm Height: 3,750 mm Bodpfxjvcqnrj Altelk

Leto izdelave: 1992, stanje: rabljeno, Stroj (dodatek): 6 hladilnih rezervoarjev Kapaciteta: 164 hl Obratovalni nadtlak: 0 bar Širina: ca 2,05 m Bjdew Tmqzopfx Altolk Višina: ca 6,2 m Položaj / postavitev: Pokončno Osnovna konstrukcija: Na nogah Oprema: Človekova odprtina, 2 hladilni coni, ventil za vzorčenje, varnostni ventil z indikatorjem tlaka, vakuumski ventil.