HZT029015001-15MBD 125L Dual Pump Vacuum Pumping Station – 316L – Domestic Sewage Treatment Vacuum Pumping Station – Stainless Steel High Capacity Vacuum Sewage System | Dual Pump Parallel Redundancy Design | For Ship and Land Vacuum Toilets

1. Product Overview
The HZT029015001-15MBD 125L Double Pump Vacuum Station is a high-capacity vacuum sewage disposal system based on the 15MBD vacuum pump. The system consists of two HZT029015001-15MBD vacuum pumps, a 125L stainless steel storage tank, a piping valve block, and an electronic control system**. It maintains a stable negative pressure even under high-frequency use or with multiple terminal connections.

This system is widely used in ships, yachts, offshore platforms, subways, campsites, RVs, and land-based centralized vacuum toilet systems. It is a core unit for water-saving sewage collection and disposal projects.

2. Materials and Manufacturing Process
The pump station utilizes 316L stainless steel construction throughout. The piping and storage tanks are precision-welded, sandblasted, and electropolished for exceptional corrosion resistance and sealing reliability.

* Storage tank capacity: 125L, pressure and vacuum rating ≥ -0.09MPa;
* Pipe material: 316/304 stainless steel precision welded pipe;
* Interface standard: DN50 quick-release flange + EPDM O-ring (HZT037219SET);
* Welding process: TIG welding + 100% vacuum seal inspection;
* Electrical control box: Waterproof industrial-grade construction with manual/automatic dual-mode operation;
* Surface treatment: Sandblasting + electrolytic polishing, salt spray and oil-resistant, easy to clean.

3. System Structure and Technical Features
a) Dual Pump Redundancy
Two 15MBD vacuum pumps automatically alternate operation, implementing a “primary pump + backup pump” system. When the primary pump runs for a set period or experiences negative pressure fluctuations, the backup pump automatically switches into operation, ensuring continuous system suction.

b) 125L Vacuum Tank
This large-capacity tank balances system negative pressure fluctuations, improving vacuum stability during simultaneous flushing of multiple terminals. It is suitable for parallel operation with 4–10 vacuum interface units (HZT6545873 / HZT6542601).

c) Smart Control System
The control box utilizes a PLC + relay logic dual control structure, automatically identifying liquid level and pressure changes, enabling start/stop control and fault alarms.

d) Valve & Piping System
Includes check valves, solenoid valves, pressure relief valves, drain valves, and vacuum protection valves. Piping utilizes DN50 quick-connect connectors for quick maintenance and excellent sealing performance.

e) Operating Characteristics

* Low noise, low vibration, and stable continuous operation;
* Automatic drain and vacuum recovery functions;
* Expandable remote monitoring interface (RS485 / Modbus).

4. Working Principle
The system uses two vacuum pumps to alternately generate negative pressure, drawing wastewater from vacuum toilets or interface units into a 125L storage tank. The wastewater is then automatically discharged to the wastewater treatment unit via a solenoid valve.
When the tank level reaches the upper limit, the discharge valve opens; when the level drops, the pump unit automatically switches to standby mode.
The entire system operates automatically with manual override, ensuring stability even in unattended environments.

5. Applications
The HZT029015001-15MBD 125L dual-pump vacuum pump station is suitable for:

* Vacuum sanitation systems for ships, yachts, and passenger vessels;
* Sewage collection systems for offshore drilling platforms, FPSOs, and engineering vessels;
* Centralized vacuum toilet systems for subways, stations, and airports;
* Campsites, recreational vehicles (RVs), and mobile sanitation modules;
* Vacuum sewage treatment projects for water-saving and environmentally friendly land-based buildings.
The system is compatible with EVAC and JETS standard vacuum networks and can also be used with HZT’s proprietary control program.

6. Related Materials and Optional Components

* Vacuum Pump Unit: HZT029015001-15MBD (Dual Unit Configuration)
* Flange Assembly: HZT023280080 Flange Fastener
* Seal Assembly: HZT037219SET EPDM O-Ring Set
* Pipe Fittings: HZT023280070 / HZT021217000
* Electrical Control Cabinet: With PLC, Dual Relay Logic Control, and Emergency Manual Mode

7. Professional Summary
The HZT029015001-15MBD 125L Dual Pump Vacuum Pump Station is a highly reliable core unit designed for multi-terminal vacuum toilets and sewage systems.
Dual pumps in parallel with automatic switching control ensure continuous negative pressure in the system, and the 125L storage tank provides ample buffer capacity, making it suitable for frequent public use. Constructed entirely of 316L stainless steel, the unit is corrosion-resistant, energy-efficient, and easy to maintain. It is an ideal alternative to international EVAC/JETS systems and a flagship model in the HZT series of vacuum pumping stations.

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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