HZT023280010-25MBA Double Pump Vacuum Station – 316L Stainless Steel Vacuum Core Pump Unit | Dual Pump Automatic Switching System | Solutions for Medium and Large Vacuum Systems in Marine and Land-Based Vacuum Toilets

1. Product Overview
The HZT023280010-25MBA Double Pump Vacuum Station is a high-performance pump unit designed for medium-to-large vacuum sewage systems. It is widely used on ships, offshore platforms, passenger ships, camps, and land-based centralized vacuum toilet systems.

Powered by a 25MBA series vacuum pump, this pump station utilizes a dual-pump parallel configuration, enabling automatic switching between active and standby redundancy**, maintaining continuous and stable vacuum system operation even in high-frequency usage scenarios.

The system offers advantages such as vacuum energy storage, negative pressure maintenance, automatic control, low noise, and easy maintenance, making it an ideal core module for marine and land-based vacuum sanitation systems.

2. Materials and Manufacturing Process
The entire unit is constructed of 316L stainless steel, and the piping, flanges, and tank interior are sandblasted and electropolished for excellent corrosion resistance and structural strength.

* Main body material: 316L stainless steel tank and frame structure;
* Piping material: 316/304 stainless steel welded;
* Interface standard: φ50/DN50 quick-release flange interface;
* Welding process: TIG welding + 100% vacuum seal inspection;
* Surface treatment: Sandblasting + electropolishing, salt spray and oil resistant, easy to clean.

Pump components are all derived from the HZT25MBA series standard part numbers (e.g., HZT023219000, HZT023219100, HZT023280040, HZT037219SET), ensuring system compatibility and unified maintenance.

3. System Structure and Technical Features
a) Dual Pump Configuration: The primary and secondary pumps automatically switch operation. When the primary pump is shut down for maintenance or the load increases, the secondary pump automatically starts to take over. b) Vacuum Tank System: A built-in large-capacity 316L storage tank ensures system negative pressure is maintained even when multiple terminals are in use.
c) Auto Control System: Utilizing PLC/relay logic dual-mode control, the system automatically starts and stops the dual pumps based on liquid level and vacuum pressure.
d) Valve Assembly: Equipped with check valves, solenoid valves, pressure relief valves, and drain valves, the system ensures safe operation.
e) Piping System: Utilizes brushed 316/304 stainless steel piping, coupled with quick-release flanges and EPDM seals (HZT037219SET), ensuring high sealing and low-maintenance operation.
f) Noise and Vibration Reduction: The dual pump bases feature shock-absorbing rubber pads and anti-vibration support structures to reduce operating noise and vibration transmission.
g) Compatibility and Scalability: Supports international standard control interfaces such as EVAC and JETS, allowing for customized remote monitoring or linked control modes.

4. Operating Principle
The HZT023280010-25MBA dual-pump vacuum station maintains negative system pressure by alternating between two vacuum pumps. When the system pressure reaches a preset lower limit, the vacuum pumps automatically shut down; when the liquid level rises or the vacuum level decreases, they automatically restart.
Sewage is drawn into a vacuum storage tank through an interface unit (such as HZT6545873 or HZT6542601) and then discharged through a discharge valve to the sewage treatment system.
This control logic enables continuous suction without human intervention, ensuring stable operation of equipment such as vacuum toilets and gray and black water tanks.

5. Applications
The HZT023280010-25MBA dual-pump vacuum pump station is widely used in:
a) Vacuum sewage systems for various types of ships (cruise ships, passenger ships, naval auxiliary ships, and platform supply vessels);
b) Domestic sewage and vacuum toilet systems for offshore platforms, FPSOs, and drilling vessels;
c) Centralized vacuum toilet systems for subways, airports, and train stations;
d) Mobile vacuum sanitation units for recreational vehicles (RVs) and campsites;
e) Land-based vacuum sewage collection and environmental protection and water-saving projects.
This product is compatible with standard EVAC and JETS system interfaces, and HZT’s proprietary control system solutions are also available upon request.

6. Related Materials and Optional Components

* Vacuum Pump Unit: HZT25MBA (HZT023219000 / HZT023219100 / HZT023280040)
* Flange Assembly: HZT023280080 (DN50 stainless steel flange)
* Seal: HZT037219SET (EPDM O-Ring Set)
* Electrical Control System: Dual-Pump Logic Control Cabinet (supports remote monitoring, automatic switching, and emergency linkage)
* Pipe Fittings: HZT023280070 Flange Fastener, HZT021217000 RG3/8 Plug

7. Professional Summary
The HZT023280010-25MBA dual-pump vacuum pump station is a highly efficient central unit for medium- to large-scale vacuum sewage systems. It utilizes 316L Stainless steel construction, a dual-pump parallel design, and automated control logic ensure continuous, stable vacuum pressure and water-saving discharge.

The system offers safe and reliable operation, simple maintenance, and supports remote control and OEM customization. It is suitable for vacuum sanitary systems on ships, platforms, and land, offering a high-performance alternative to internationally standard EVAC/JETS systems.

8. Technical Support and Supply

HZT provides complete equipment, system design, and accessory services:

* Comprehensive solutions for marine vacuum pumps and sewage vacuum pumping stations
* OEM system and shipyard support
* Rapid parts supply and repair service

📧 Technical Support Email: SJDT1199@gmail.com
🌐 Official Website: www.vacuumtoiletparts.com

1. HZT029151001 – Flap Valve Seat
2. HZT037302200 – Flap Valve Disc
3. HZT029151003 – Pressure Plate
4. HZT029150310 – Suction Chamber Cover
5. HZT037219210 – O-Ring
6. HZT029150320 – Suction Chamber
7. HZT020202900 – Hexagon Socket Seal
8. HZT029151900 – Lock nut
9. HZT029150400 – Rotating blade
10. HZT029150500 – Stationary blade
11. HZT029152401 – Half-threaded hexagonal bolt with spring washer (M10x170)
12. HZT029150601 – End flange
13. HZT029150701 – Rotor (impeller)
14. HZT029150800 – Rotor housing
15. HZT029151800 – Spacer
16. HZT038201500 – Shaft seal
17. HZT034507420 – Hose clamp
18. HZT034507500 – Hose
19. HZT029150391 – Shaft Seal Flange
20. HZT029150901 – Pressure Chamber (Water Discharge Chamber)
21. HZT029150310-02 – Suction Cover (Metal Plate)
22. HZT029150450 – Cutter Assembly
23. HZT/- – Motor – 2.2kW – Marine Motor
24. HZT029015001 – 15MBD Vacuum Pump
25. HZT023280061 – Flap Valve Seat
26. HZT037302100 – Flap Valve Disc
27. HZT023280091 – Pressure Plate
28. HZT023280050 – Suction Chamber Cover
29. HZT037219260 – O-ring
30. HZT023280070 – Flange Fastener
31. HZT023280080 – Flange
32. HZT023280040 – Suction Chamber
33. HZT020202900 – Plug
34. HZT020203100 – Rotating Blade
35. HZT020203100 – Stationary Blade
36. HZT021201000 – Blade Holder
37. HZT036202010 – Half-thread Hexagon Bolt (with Spring Washer) M12x220
38. HZT023200210 – Suction Chamber End Plate
39. HZT023219000 – Rotor Housing
40. HZT021265401 – Rotor (Impeller)
41. HZT021217000 – RG 3/8” Plug
42. HZT023219000 – Pressure Chamber (Discharge Chamber)
43. HZT023260400 – Isolation Sleeve
44. HZT038218900 – Shaft Seal
45. HZT023280030 – Shaft Seal Flange
46. HZT023280050-02 – Suction Chamber Cover (Metal Sheet)
47. HZT/- – Motor – 3.0 kW – Marine Motor
48. HZT023280010 – 25 MBA Vacuum Pump

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