Square manhole DJ-RK-FX-MINI

The sanitary stainless steel square manway tank manhole can enter the closed space such as tank and container and prevent contamination in the food process,pharmaceutical and bioengineering, and cosmetics industry.

Application:

Food grade tank manholes are specialized access openings designed for containers,storage tanks,reactors in the food ,beverage,pharmaceutical,and cosmetics industries.

1.Food & Beverage Industry

• Dairy, Milk storage tanks, fermenters (requires steam sterilization capability).  
• Beverages Syrup/blending tanks (acid-resistant gaskets needed).  
• Condiments, Soy sauce/vinegar fermentation tanks (gas-tight design).  

2.Pharmaceutical & Biotech  

• Bioreactors, purified water tanks (must meet ASME BPE sterile standards).  

3.Cosmetics & Chemicals

• Cosmetic ingredient tanks (PTFE seals for oil resistance).

Working princples:

1.Seal design

-Uses food-grade gaskets (silicone, EPDM, or Viton/FPM) to prevent contamination from dust, microbes, or external pollutants.  

2.Hygienic design
  - Smooth internal surface (Ra ≤ 0.8 μm, per GMP standards) to prevent material buildup and allow easy CIP (Clean-in-Place) or SIP (Sterilize-in-Place).  
  - Made of 304/316L stainless steel for corrosion resistance and food compatibility.  

3.Safety Features
  - Pressure balance valves prevent sudden pressure release when opening.  
  - Explosion-proof versions may include rupture discs for overpressure protection

Hygienic tank manway function:
1.Hygiene Maintenance
  - Prevents cross-contamination, ensuring compliance with food safety regulations (e.g., HACCP).  

2.Operational Access 
  - Allows personnel entry for cleaning, inspection, or maintenance (large tanks must follow OSHA confined space regulations).  

3.Material Handling
  - Serves as a temporary filling port, sampling point, or connection for piping/pumping systems.  

4.Safety Control
  - Includes sight glasses or venting ports to monitor tank conditions and prevent vacuum/pressure hazards. 

Specification:

Size: 120*180, 185*235, 200*280

Seal material: EPDM; FKM; Slicon; HNBR

Shell material: 304/1.4301; 316L/1.4404

Handwheel material: Nylon, 304

Operating temperature: -20℃~130℃

Working pressure: ≤0.5bar