Product Categories

Reference: T1A/ 411
Sizes available: 235x185mm
Body Material: AISI 304 (1.4301), AISI 316L (1.4404)
Seal Material: Silicone (white), EPDM (black), Viton (FPM, black)
Temperature range: -4°F to 284°F (-20°C to 140°C)
Cover thickness (t) available: 3.0mm, 4.0mm, 5.0mm.
Frame/Neck height (B) available:75mm(2.95‘’),100mm (3.94"), 150mm (5.91") or as your request



411 Series Rectangular Manhole apply to all kind of atmospheric containers or tanks to prevent leakage; it is widely used in food, beverage, brewing and pharmaceutical industries.



Sizes available 235x185mm
Body Material AISI 304 (1.4301), AISI 316L (1.4404)
Seal Material Silicone (white), EPDM (black), Viton (FPM, black)
Max. Working Pressure 43psi (3bar), according to dimension table as below.
Working Temperature Silicone: -4 to 212°F (-20 to 100°C)
EPDM: -4 to 248°F (-20 to 120°C)
Viton (FPM): -4 to 284°F (-20 to 140°C)
Cover thickness (t) available 3.0mm
Frame/Neck height (B) available 75mm (2.95″), 100mm (3.94″), 150mm (5.91″), or as request.
Internal Finish Ra 32-20μin (0.8μm-0.5μm), bead blasted, acid pickled, or electro polished available upon request.
External Finish




● ASTM 304/316L stainless steel grade
● Outwards opening
● Optional safety nut and gradual opening system
●All surface finish ≤ 32 Ra
● FDA approved available options:Silicone,EPDM and Viton
● Optional height and thickness
● Stainless steel handle and Nylon handle are available
● 100% tested and inspected before shipped


Rectangular Manway Door 411 Series