HZT021201000 Knife Holder | 25MBA Marine Vacuum Sewage Pump, 316 Stainless Steel, High-Precision Support Assembly. Compatible with major vacuum JETS systems (Marine/Yacht/Vacuum Toilet/Sewage System).

1. Product Overview
The HZT021201000 knife holder is one of the core mechanical support components of the 25MBA marine vacuum sewage pump. It primarily secures the stationary knife assembly (HZT020203100), maintaining the coaxial accuracy of the knife assembly and rotor (HZT021265401) in high-vacuum fluid environments.

This component, with its high-strength structural design and dynamic balancing, effectively prevents cutting offset and vibration, making it a critical component for ensuring smooth pump operation and extending the life of the knife assembly.

It is widely used in ships, yachts, offshore platforms, and land-based vacuum toilet systems. It is an indispensable precision component in the assembly of the 25MBA series vacuum pumps.

2. Materials and Craftsmanship
The knife holder is precision-machined from 316 stainless steel, with a sandblasted and electropolished surface for excellent corrosion resistance.

During the manufacturing process, the bracket is formed in one go using a high-precision five-axis CNC machining center. Key mating holes and positioning surfaces undergo secondary finishing, achieving a flatness accuracy of less than 0.01mm.

The material properties ensure it will resist rust and deformation during long-term use in blackwater, seawater, and humid vacuum environments, meeting the long-term continuous operation requirements of marine vacuum systems.

All finished products undergo dynamic balancing testing and assembly calibration to ensure stable operation at a G2.5 dynamic balance level.

3. Structure and Technical Features
a) Overall rigid structure provides excellent vibration resistance and stability.
b) 316 stainless steel is used for corrosion resistance, making it suitable for marine and sewage environments.
c) Precision CNC machining ensures precise assembly of the stator blade and rotor, maintaining pump body coaxiality.
d) The rational structural design allows for easy installation and maintenance, minimizing adjustment errors.
e) Dynamic balancing level G2.5 is suitable for high-speed vacuum pump applications. Once installed, the knife holder forms a precise cutting system with the fixed blade, rotor, and housing, ensuring smooth fluid circulation, low noise, and stable operation within the vacuum pump.

4. Applications
a) Marine Vacuum Discharge Pump systems for ships and yachts.
b) Vacuum wastewater treatment systems for passenger ships, cruise ships, offshore platforms, and drillships.
c) Land-based construction, recreational vehicles (RVs), and environmentally friendly vacuum toilet systems.
d) Industrial wastewater and blackwater treatment and vacuum conveying equipment.
This component is widely used in water-saving, sealed, and low-maintenance vacuum systems and is compatible with major international vacuum system interfaces.

5. Related Materials and Components

* HZT020203100 Stationary Knife
* HZT021265401 Rotor
* HZT023219000 Rotor Housing
* HZT023219100 Pressure Chamber
* HZT038218900 Shaft Seal

These components together constitute the 25MBA vacuum pump’s core cutting, sealing, and fluid dynamics systems.

6. Professional Summary

The HZT021201000 knife holder, machined from high-strength 316 stainless steel, is the core support component of the 25MBA vacuum sewage pump.

Through high-precision CNC machining, dynamic balancing, and electrolytic polishing, this holder offers excellent corrosion resistance and structural stability in marine environments. Suitable for use in vacuum toilet systems on ships, yachts, offshore platforms, and on land, this product is compatible with mainstream international vacuum pump structural standards and is an ideal choice for high-end OEM and maintenance replacement parts in the international trade market.

7. 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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