Evac marine vacuum systems, vacuum toilets, and water treatment solutions

Supply genuine marine vacuum collection systems, sanitary toilets, MBR wastewater bioreactors, HEM reverse osmosis desalinators, and Cathelco cathodic protection from Evac Oy.

Marine and Industrial Vacuum Toilets Evac Optima 5, Classic, and 90/900/910 Series

Evac vacuum toilets including Optima 5, Classic, Evac 90, Evac 900, and Evac 910 models in vitreous china and stainless steel are engineered for cruise ships, passenger ferries, offshore platforms, and advanced commercial buildings.

Evac systems utilize only 1.2 liters of water per flush compared to 6–9 liters in standard gravity toilets, reducing total wastewater volume by over 80% and operating reliably under vessel heel and pitch conditions.

Water consumption of 1.2 L per flush, reducing black water volume by over 80% compared to gravity sanitary systems
Configurations: floor-mounted and wall-hung versions, bowls made of high-grade porcelain or shock-resistant AISI 316 steel
Integrated vacuum discharge valve mechanism delivering quiet pneumatic flush and absolute odor isolation
Components: pneumatic flush push buttons, soft-close seats and lids, acoustic vibration pads, wall mounting frames

Vacuum Discharge Valves, Rubber Diaphragms 5435169, and Evac Control Mechanisms

Genuine Evac pneumatic control mechanisms and discharge valves provide hermetic vacuum line shut-off and synchronized water supply with vacuum pulse evacuation.

The catalog includes control mechanisms 5775500, compact EvacInclick 1 flush modules (part 5350000), heavy-duty elastomer rubber diaphragms 5435169, sealing rubber sleeves 5435181, release relief valves 5435014, and valve housing units 5435069.

Pneumatic vacuum control mechanism 5775500 and compact EvacInclick 1 flush cartridge 5350000
Elastomer vacuum diaphragm 5435169 engineered for continuous high-cycle flexing and seawater resistance
Sealing rubber sleeve 5435181 and corrosion-resistant discharge valve outer housing 5435069
Complete discharge closing valve assembly 5435137 and pressure relief exhaust valve 5435014

Evac Online and OnlineMax Vacuum Collection Systems and MST Pump Packages

Evac Online, OnlineMax, Multi-Online, and Mini-Online vacuum pump stations provide continuous gathering of black water, gray water, condensate, and food waste into central holding tanks or shipboard treatment units.

Equipped with robust MST macerating vacuum pumps and ejectors, the systems transport sewage via compact pipes (DN40–DN65) without requiring downward gravity slopes.

Maintains steady operational vacuum between -40 and -70 kPa to service multiple fixtures simultaneously
Energy-efficient heavy-duty MST-40 and MST-60 macerating vacuum pumps with integrated solid particle shredding
Skid-mounted compact footprint featuring automated PLC control panels and continuous pressure monitoring
Flexible piping layouts permitting upward vertical lifts and routing around structural bulkheads

Evac Marine Shower Drains 5439590 and Pneumatic Vacuum Activators 5821000

Evac Shower Drains (part 5439590) paired with pneumatic vacuum activators Evac 5821000 guarantee positive sanitary water extraction from low-level showers, galleys, and laundry areas without stagnant pool formation.

Equipped with an autonomous liquid-level diaphragm valve, the assembly actuates when water collects and transfers drainage into the vacuum main, preventing backflow below the vessel waterline.

Evac 5439590 marine shower drain constructed from marine-grade stainless steel with removable strainer basket
Pneumatic vacuum activator Evac 5821000 requiring zero external electrical cabling for autonomous actuation
Integrated vacuum interface reservoir preventing foam overflow, sewer gases, and back-pressure flooding
Enables trouble-free sanitary drainage from passenger staterooms situated below the sea level waterline

Evac MBR Membrane Bioreactors and IMO MEPC.227(64) Wastewater Treatment Plants

Evac MBR (Membrane Bioreactor) and Evac EcoTreat shipboard wastewater treatment plants represent state-of-the-art biological clarification solutions for vessel sewage and gray water.

The systems hold full certification under the rigorous IMO MEPC.227(64) standard, including Section 4.2 nutrient removal requirements for total nitrogen and phosphorus in environmentally protected Special Areas.

Certified compliance with IMO MEPC.227(64) including Section 4.2 nutrient removal for the Baltic Sea area
Submerged flat-sheet membrane ultrafiltration modules ensuring pathogen-free clear effluent discharge
Advanced continuous aeration and biological denitrification cycles maximizing organic pollutant breakdown
Components: replacement membrane modules, aeration blowers, coagulant dosing pumps, UV disinfection lamps

Evac and HEM Flow Reverse Osmosis Marine Fresh Water Desalination Systems

Evac and HEM (Hydro Electro Marine, an Evac Group brand) reverse osmosis desalinators and the specialized HEM Flow series generate ultra-pure potable and technical water directly from raw seawater.

With production capacities spanning from 1.5 to over 1000 m³ of fresh water per day, the systems serve luxury superyachts, cruise liners, and commercial fleets backed by advanced remineralization and UV sterilization stages.

High-rejection marine reverse osmosis membrane modules delivering premium salt separation performance
Multi-stage pretreatment trains incorporating media sand filters, pre-filtration cartridges, and carbon filters
Integrated mineral re-hardening dosers, pH neutralizing columns, and final ultraviolet disinfection lamps
Spare parts: high-pressure plunger feed pumps, RO pressure vessels, salinity conductivity meters, filter cartridges

Cathelco ICCP Hull Cathodic Protection and MGPS Pipework Antifouling Systems

Cathelco ICCP (Impressed Current Cathodic Protection) and Cathelco MGPS (Marine Growth Prevention Systems) seawater pipework antifouling technologies are integral brands within Evac Group.

With over 50,000 installations globally, Cathelco systems safeguard vessel hulls, sea chests, box coolers, and internal seawater cooling circuits against corrosion and macrofouling by barnacles and mussels.

Cathelco ICCP corrosion control utilizing mixed metal oxide coated titanium anodes and zinc reference electrodes
Ice-class heavy hull anodes and diver-changeable configurations enabling quick afloat servicing without drydocking
Cathelco MGPS marine growth protection featuring controlled copper and aluminum/ferrous dual-action anode sets
Spare parts: automated current control thyristor panels, digital reference monitoring boards, hull penetrations

Evac HydroTreat® Wet Organic Waste Converters, Compactors, and Glass Crushers

Evac comprehensive dry and wet waste management equipment enables ship operators to comply fully with stringent MARPOL Annex V zero-discharge directives.

The portfolio features the pioneering Evac HydroTreat® hydrothermal carbonization plant, which cuts CO2 emissions by over 60% by transforming organic food waste and biological sludge into inert biochar, alongside marine balers, compactors, and glass crushers.

Evac HydroTreat® continuous processing plant converting food waste and biosludge into stable, dry biochar
CO2 emission reduction exceeding 60% combined with a 10-fold volumetric compaction of onboard organic wastes
Heavy-duty marine baling presses and compactors for cardboard, stretch film, plastic bottles, and metal cans
High-throughput maritime glass crushers with enclosed feed hoppers discharging crushed cullet directly into bags

Equipment identification and Evac nameplate verification

Evac Oy (headquartered in Espoo, Finland, founded in 1979) is the global provider of integrated marine and building water and waste management solutions, encompassing renowned brands Evac®, Cathelco®, and HEM®.

To order replacement parts or configure a turnkey marine system, specify the equipment group: vacuum toilets (Optima 5, Classic, 90/900/910), vacuum collection stations (Online, OnlineMax), membrane bioreactors (Evac MBR), reverse osmosis desalinators (HEM Flow), or Cathelco corrosion and fouling

prevention systems.

Providing a photograph of the equipment nameplate or direct component catalog part number (such as 5775500, 5350000, 5435169, 5435181, 5439590, 5821000) guarantees exact engineering matching and rapid order fulfillment.

Marine vacuum toilets Evac Optima 5 and Evac 90/900/910 series

Engineered for cruise vessels, passenger ferries, navy frigates, offshore rigs, and high-efficiency land buildings, Evac vacuum toilets operate reliably under severe sea motions, structural vibrations, and marine atmospheres.

Utilizing a pneumatic vacuum pulse, each flush consumes only 1.2 liters of fresh or sea water—over 80% less than conventional 6–9 liter gravity toilets—minimizing sewage holding tank sizing, treatment system footprint, and total shipboard energy consumption.

We supply floor-mounted and wall-hung toilet bowls in vitreous china and heavy-gauge AISI 316 stainless steel, acoustic vibration isolation mountings, micro-lift soft-closing seats, and heavy-duty marine bulkhead installation kits.

EvacInclick 1 flush modules and pneumatic control mechanisms 5775500

Precise cycling of the vacuum toilet is driven by the pneumatic control mechanism 5775500 connected with the compact EvacInclick 1 flush cartridge (catalog number 5350000), coordinating vacuum valve opening and pressurized water scouring.

The entire mechanism operates purely on differential line vacuum without electrical wiring routed to the porcelain bowl, ensuring absolute explosion-proof safety and electrical isolation in wet marine heads.

We supply genuine control units 5775500, EvacInclick 1 quick-fit flush modules, pneumatic actuators, vacuum sensing push buttons, and certified service seal overhaul packages.

Heavy-duty rubber diaphragms 5435169 and discharge valves 5435137

The central sealing component of the Evac toilet discharge valve is the heavy-duty elastomer rubber diaphragm 5435169, subjected to continuous rapid flexing cycles upon every sanitary flush.

Fabricated from proprietary marine-grade synthetic elastomer, the diaphragm resists chemical detergents, saline deposits, and abrasive particulates without hardening or premature tearing.

We supply elastomer diaphragms 5435169, rubber sealing sleeves 5435181, relief exhaust valves 5435014, valve housings 5435069, and factory-tested discharge valve assemblies 5435137.

Evac Online and OnlineMax vacuum collection stations with MST pumps

Evac Online, OnlineMax, Multi-Online, and Mini-Online skid-mounted vacuum units maintain an operational vacuum between -40 and -70 kPa to service multiple sanitary fixtures, galley sinks, and condensate collectors simultaneously.

Powered by robust MST series (MST-40, MST-60) macerating screw vacuum pumps and hydro-ejectors, the system transfers wastewater through compact piping (DN40–DN65) without requiring downward gravity slopes.

We supply complete MST pump packages, replacement macerating rotors, mechanical shaft seals, ejectors, check valves, and PLC automation control panels with touchscreen monitoring.

Evac Shower Drain 5439590 and pneumatic vacuum activators 5821000

To drain grey water from low-level shower pans, galleys, and laundry spaces, Evac supplies the marine stainless steel Shower Drain 5439590 coupled with pneumatic vacuum activators 5821000.

When liquid accumulates in the reservoir, the autonomous activator triggers a built-in diaphragm valve, instantaneously drawing water into the vacuum main and preventing sewer gas odor or flooding in cabins located below the ship waterline.

We deliver complete shower drains 5439590, autonomous activators 5821000, rubber sealing sleeves, stainless debris baskets, and diaphragm rebuild kits.

Biological wastewater treatment plants Evac MBR (IMO MEPC.227(64))

Evac MBR (Membrane Bioreactor) and Evac EcoTreat biological treatment plants purify black and grey wastewater to ultra-clean technical discharge quality without toxic chemical disinfection.

The plants hold full type-approval certification under IMO MEPC.227(64), including Section 4.2 nutrient removal mandates for total nitrogen and phosphorus in ecologically sensitive Special Areas like the Baltic Sea and Alaska.

We supply submerged ultrafiltration membrane modules, aeration positive displacement blowers, coagulant chemical dosing skids, level transmitters, and ultraviolet sterilizers.

HEM Flow and Evac reverse osmosis desalination and potable water plants

Evac and HEM (Hydro Electro Marine, an Evac Group company, series HEM Flow) reverse osmosis plants generate from 1.5 to over 1000 m³ of pure potable water per day directly from open seawater.

Multi-stage seawater treatment incorporates sand media filters, cartridge pre-filters, high-pressure seawater reverse osmosis membranes, mineral re-hardening dosers, and final UV and silver ion sterilization modules.

We deliver seawater RO membranes, ceramic plunger high-pressure pumps, salinity monitoring sensors, replacement sediment filter cartridges, and UV disinfection lamp tubes.

Cathelco ICCP hull cathodic protection and MGPS pipe antifouling

Cathelco ICCP impressed current systems safeguard the vessel hull against electrochemical corrosion, while Cathelco MGPS prevents macrofouling of sea chests and pipework by barnacles and mussels.

With over 50,000 installations worldwide, Cathelco equipment features ice-class hull anodes and diver-changeable anode designs that permit underwater servicing without entering a drydock.

We supply Cathelco mixed metal oxide titanium anodes, zinc reference electrodes, thyristor control panels, copper/aluminum MGPS dual anodes, and cofferdam hull penetration sleeves.

Evac HydroTreat organic waste converters and dry waste compactors

Meeting MARPOL Annex V zero-discharge directives, Evac supplies the innovative Evac HydroTreat® hydrothermal carbonization unit, converting onboard wet food waste and biological sludge into inert biochar with over 60% CO2 reduction.

For dry waste management, Evac provides heavy-duty marine vertical balers, cardboard/plastic compactors, and high-capacity marine glass crushers that deposit cullet directly into sealed bags.

We supply shredder cutting blades, compaction hydraulic cylinders, heavy-duty collection bags, safety interlock sensors, and certified HydroTreat plant spare parts.

International supply, marine logistics, and engineering support

SpareX delivers genuine Evac, Cathelco, and HEM spare parts, maintenance overhaul kits, and complete machinery packages to shipowners, shipyards, and offshore operators worldwide.

We provide drawing verification, factory expediting, pre-dispatch quality checks, export crating, and express courier logistics directly to any international commercial port or shipyard berth.

Submit your machinery nameplate photo, vessel IMO number, or manufacturer catalog part numbers to receive our engineering assessment and commercial quotation.

Machinery specifications, production lead times, and commercial pricing for Evac equipment and spare parts are determined individually upon formal engineering request; manufacturer retail price lists and public OEM catalogs are not published online.

We operate as an independent supplier and are not an authorized service agent of Evac Oy.