HZT023280040 Suction Chamber — 25MBA Marine Vacuum Sewage Pump Front Vacuum Inlet Chamber | 316 Stainless Steel Precision Cast Construction | High-Efficiency Vacuum Flow Path Design

I. Product Overview

The HZT023280040 suction chamber is the core front-end component of the HZT023280010 (25MBA marine vacuum sewage pump). It draws the gas-liquid mixture of sewage, black water, or domestic water from the pipeline system into the pump body and guides it into the HZT023219000 (rotor housing) for vacuum transmission.

This component utilizes a monolithic casting process for 316 stainless steel. Its internal flow path is designed using fluid simulation and optimized vacuum resistance. This ensures high vacuum suction and high flow stability even under strong negative pressure conditions. It is a key component in the rapid vacuum formation of the entire unit.

II. Structure and Materials

| Project | Content |
| —- | ————————————————— |
| Material | 316 stainless steel (AISI 316) integral casting |
| Process | Medium-temperature wax precision casting + CNC precision turning + surface electrolytic sandblasting |
| Interface | Front connection HZT029151001 (flap valve base) <br> Rear assembly HZT023219000 (rotor housing) |
| Seal | Matching O-ring HZT037219210 (NBR / EPDM) |
| Fixing method | Double-hole fastening (M8 bolts symmetrically locked) |
| Structural features | Internal vacuum transition channel with rounded corners for low vortex, low noise, and high suction efficiency |

III. Function and Performance

1️⃣ High vacuum suction efficiency
The internal streamline structure of the suction chamber was analyzed using CFD (Computational Fluid Dynamics) Dynamics) optimization maximizes negative pressure generation efficiency, improving vacuum response speed by approximately 20% compared to traditional structures.

2️⃣ Corrosion-resistant 316 stainless steel construction

Suitable for complex media such as seawater, black water, and domestic sewage, preventing electrochemical corrosion and cracking during long-term operation.

3️⃣ Reliable sealing design

Combined with an O-ring (HZT037219210), the pump’s internal vacuum is completely isolated from the external environment.

4️⃣ Easy assembly and maintenance

Slips into the HZT023219000 rotor housing, and a dual-hole fastening structure allows for quick alignment.

5️⃣ Multi-system compatibility

Compatible with both the HZT25MBA and HZT25MBA-02 variant pumps, ensuring strong compatibility and easy maintenance.

IV. Typical Mating Components

* 🔹 HZT023219000 — Rotor Housing
* 🔹 HZT023219100 — Pressure Chamber
* 🔹 HZT023280030 — Shaft Seal Flange
* 🔹 HZT038218900 — Mechanical Shaft Seal
* 🔹 HZT037219210 — O-Ring (NBR/EPDM)
* 🔹 HZT023280061 — Flap Valve Base

These components work together to form a complete vacuum suction system, enabling the pump to quickly establish stable vacuum pressure after startup.

5. Applications

The HZT023280040 suction chamber is primarily used at the inlet of vacuum pump systems and is widely used in:

* 🚢 Marine & Yacht Vacuum Sewage Systems
* ⚓ Offshore Vacuum Discharge & Collection Units
* 🚽 Land & RV Vacuum Toilet Systems
* 🧱 Vacuum Pumping Stations and Vacuum Sewage Treatment Systems

6. 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
* Fast parts supply and repair services

📧 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 – Fixed Blade
11. HZT029152401 – Half-threaded Hexagon 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 end flange
20. HZT029150901 – Pressure chamber (discharge chamber)
21. HZT029150310-02 – Suction cover (metal plate)
22. HZT029150450 – Cutter Assembly
23. HZT/- – Motor – 2.2 kW – 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 – Fixed 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 Plate)
47. HZT/- – Motor – 3.0kW – Marine Motor
48. HZT023280010 – 25MBA Vacuum Pump

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