HZT023280080 DN50 Marine Vacuum Flange | 316 stainless steel DN50 vacuum interface connector, providing a high-strength sealing solution for 25MBA marine and land-based vacuum systems; fully compatible with JETS vacuum systems

1. Product Overview
The HZT023280080 DN50 flange is the core fluid connection component of the 25MBA vacuum sewage pump system. It securely connects the suction chamber (HZT023280040), pressure chamber (HZT023219100), and valve seat base (HZT023280061) to the external vacuum line.

This flange features a standard DN50 interface design and is compatible with EPDM seals (HZT037219SET) and 316 stainless steel fasteners (HZT023280070), commonly used in vacuum systems. It ensures a zero-leakage seal with black water, gray water, and seawater under negative pressure.

With its excellent corrosion resistance and structural precision, the HZT023280080 is a critical interface component for the long-term, stable operation of vacuum pumps in ships, yachts, offshore platforms, environmentally friendly vacuum toilets, and land-based sewage systems.

2. Materials and Craftsmanship
This flange is forged from solid 316 stainless steel, containing 2% Mo (molybdenum), significantly enhancing its resistance to chloride corrosion and making it particularly suitable for environments containing salty moisture and black water.

Processing utilizes CNC precision turning, face milling, and CNC hole drilling, achieving a bolt hole pitch tolerance of ≤0.05mm, ensuring perfect alignment with HZT023280070 fasteners.

The surface is sandblasted and electropolished to a metal finish of Ra0.8, enhancing corrosion resistance, preventing dirt deposits, and extending service life.

Each flange undergoes sealing surface flatness testing and thread assembly testing before shipment to ensure stable preload and sealing pressure under high vacuum.

3. Structure and Technical Features
a) Standardized DN50 flange interface, compatible with various international vacuum line sizes;
b) 316 stainless steel construction, resistant to corrosion, impact, and vibration;
c) High-precision CNC machining, ensuring excellent parallelism between bolt hole spacing and sealing surfaces;
d) Electrolytically polished surface for long-term rust prevention and easy maintenance;
e) Compatible with EPDM seals and 316 fasteners to form a vacuum seal assembly.
This design effectively reduces leakage risk, improves assembly efficiency, and ensures the pump maintains vacuum stability and structural safety during continuous operation and start-stop cycles.

4. Applications
The HZT023280080 DN50 flange is widely used in a variety of vacuum sewage and water-saving drainage systems:
a) Vacuum sewage systems for merchant vessels, yachts, and cruise ships;
b) Offshore platform and floating storage and off-shore oil and gas (FPSO) wastewater treatment plants;
c) Vacuum toilet systems for buildings, RVs, and mobile sanitation systems;
d) Industrial wastewater and environmental vacuum conveying equipment;
e) Eco-water-saving campsites and public health facilities.
As a key connection point between the vacuum pump and external piping, this flange is compatible with mainstream international vacuum system standard interfaces and can be used to replace or complement multiple brands of systems.

5. Related Materials and Components

* HZT023280040 Suction Chamber
* HZT023219100 Pressure Chamber
* HZT023280061 Flap Valve Base
* HZT023280070 Flange Fastening
* HZT037219SET O-Ring Seal Kit

These components together form the 25MBA vacuum pump’s sealing connection system, ensuring the overall structural rigidity and fluid-tight seal reliability.

6. Professional Summary
The HZT023280080 DN50 flange utilizes a one-piece forged 316 stainless steel structure, combined with high-precision CNC machining and corrosion-resistant surface treatment, ensuring excellent sealing stability in vacuum, humid, and corrosive environments. This core component in the 25MBA marine vacuum sewage pump system connects the suction chamber, pressure chamber, and external vacuum piping. Compatible with mainstream international vacuum system standard interfaces, it is suitable for marine, ship, yacht, and land-based vacuum sewage systems.

Through rigorous manufacturing and inspection processes, the HZT brand provides highly reliable, long-life sealing connection solutions to global vacuum sewage equipment manufacturers and maintenance service providers.

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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