Product Categories

Reference: T1A/120
Sizes available: 204mm, 300mm, 400mm, 430mm, 450mm, 500mm, 600mm
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: 2.0mm, 2.5mm, 3.0mm.
Frame/Neck height (B) available: 85mm (3.35"), 100mm (3.94"), 120mm (4.72"), 150mm (5.91")



120 series Non-Pressure type Round Manways with sight glass apply to all kind of atmospheric containers or tanks to prevent leakage; it is widely used in food, beverage, brewing and pharmaceutical industries.

Non-pressure type manhole cover can be used under normal pressure, so it has only one fixed handwheel device and is with double lip seal.



Sizes available  204mm,300mm, 400mm,  430mm,450mm, 500mm, 600mm
Body Material AISI 304 (1.4301), AISI 316L (1.4404)
Seal Material Silicone (white), EPDM (black), Viton (FPM, black)
Max. Working Pressure 0-36psi (0-2.5bar), 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,4mm
Frame/Neck height (B) available 85mm (3.35″), 100mm (3.94″), 120mm (4.72″), 150mm (5.91″), 200mm (7.76″), 250mm (9.85″), 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
●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
● Unique sight glass design
● 100% tested and inspected before shipped

Non-Pressure Round Manway Door With Sight Glass 120 Series