This is a full replacement spare‑parts kit for Evac marine vacuum toilets, covering toilet seat & cover, vacuum actuator unit, water inlet valve, discharge pipe, sealing connectors and full mounting hardware. All parts match Evac original part numbers. Designed for harsh marine conditions, anti‑shock, anti‑vibration and salt‑corrosion resistant. Used for overhaul and defective component replacement on merchant ships, cruise ships, work vessels and offshore platformsEvac
Specifications
| Compatible Brand | Evac |
| Main Part No. | Evac 6546818 (Toilet Seat & Cover) 5775500 (Vacuum Actuator Assembly) 5774002 (Water Inlet Valve) 5435169 Cylindrical Rubber Diaphragm (Discharge Valve Diaphragm) 5900200 Pneumatic Push‑Button Assembly for Evac‑90 Toilet |
| Operating Vacuum | -0.3 ~ -0.6 bar (Operating Vacuum Pressure) |
| Water Supply Pressure | 0.2‑0.6 MPa (Water Supply Pressure) |
| Flush Water Consumption | 0.8‑1.2 L per flush (Flush Water Consumption) |
| Operating Voltage | 24VDC (Marine Standard) |
| Main Material | PP Polypropylene, ABS Engineering Plastic, EPDM Rubber Seals, 316 Stainless Steel Fasteners |
| Ambient Condition | ‑10℃ ~ +60℃, salt‑spray resistant, marine anti‑shock & anti‑vibration |
| Application System | Marine Vacuum Sewage Collection System |
| Kit Contents | Toilet seat & cover, vacuum drive assembly, water inlet solenoid valve, discharge corrugated pipe, assorted sealing plugs, connectors, full set of mounting screws and gaskets |
Product Advantages
1. Direct replacement matching Evac original part numbers, no pipe modification required.
2. Marine‑grade shock & vibration resistance, stable for cruise and offshore vesselsEvac.
3. EPDM seawater‑resistant rubber seals, anti‑salt‑fog aging to prevent leakage.
4. Complete overhaul kit in one package, shorten multiple procurement lead‑time.
5. User‑friendly quick‑release design, easy service in narrow ship toilet compartmentsEvac.
6. Low‑water‑consumption vacuum flush, compliant with MARPOL marine environmental regulations.
7. Individual spare parts also available, cost‑effective for partial component replacement.
Working Principle
Marine vacuum toilet operates by negative pipeline pressure. When flush button is activated:
① Water inlet valve opens to supply small volume rinse water.
② After short delay, vacuum discharge valve opens. Under‑0.3~‑0.6 bar pipeline vacuum, waste is sucked into vacuum sewage piping and delivered to onboard sewage holding tankEvac.
The vacuum actuator, inlet valve and sealing parts inside this kit execute the flush cycle. Seat is user‑fitting component, connectors guarantee air‑tight pipeline connection. Broken components will cause no‑flush, water leakage, poor suction or vacuum loss. Replace corresponding spare parts to restore full toilet function.
Application Scenarios
Maintenance Instructions
1. Routine: Inspect rubber seals every 3 months. Replace aging cracked seals from spare kit.
2. Periodical: Disassemble vacuum actuator every 6‑12 months, clear internal debris to avoid valve stuck &
vacuum leakage.
3. Do NOT use strong acid detergent, which will corrode EPDM rubber seals and cause leakages.
4. Check 24VDC solenoid wiring, keep connection moisture‑proof for humid marine condition.
5. Clean toilet seat with neutral detergent, avoid sharp scratch.
6. For long‑term vessel lay‑up: drain residual water inside toilet to prevent plastic cracking under freezing
temperature.
Acceptance Standard
1. Check part numbers against order BOM upon receipt. No crack on plastic parts; rubber components free of
deformation; stainless steel hardware without rust.
2. Visual check: seat surface scratch‑free; valve housing without casting defects.
3. On‑board commissioning: connect‑0.3~‑0.6 bar vacuum source & water supply. Execute multiple flush cycles.
Smooth flush sequence, no external water leakage, no vacuum loss, proper waste suction performance.
4. Electrical test: 24V solenoid valve responds correctly under power supply.
5. Document: Packing list provided with clear part‑number & quantity information.
FAQ
Q1 : Can these spare parts directly replace original Evac components?
A: Yes. All part numbers match original Evac specifications for direct drop‑in replacement. No modification to the toilet body or piping onboard is required. You may purchase individual part numbers for damaged components instead of buying the full kit.
Q2: Which Evac toilet models are compatible?
A: Compatible with Evac Optima series marine vacuum toilets. Please provide your toilet model or old part number to confirm compatibility before placing orders.
Q3: What tools are required for onboard installation?
A: Allen wrenches and standard socket wrenches are required. All mounting fasteners are included within the kit. Repair and replacement can be carried out in narrow onboard toilet compartments.
Q4: What causes weak flushing and failure to pump away waste?
A: Possible causes: ① Vacuum leakage caused by aged sealing gaskets; ② Debris stuck inside the vacuum actuator assembly; ③ On‑board vacuum source pressure outside the‑0.3~‑0.6 bar range. Inspect sealing components and vacuum valve assembly first.
Q5: Can you provide documents for inspection and customs clearance?
A: Yes. Packing list and commercial invoice can be supplied to support customs clearance for marine supplies.
Q6: What is the lead‑time?
A: Full kits are in‑stock for fast domestic delivery. Lead‑time for special individual spare parts is available upon inquiry.
