Stainless Steel Swing Type Manhole

Stainless Steel Swing Type Manhole

Product Overview

The Stainless Steel Swing Type Manhole is an ergonomic access solution engineered to facilitate easy entry into tanks, vessels, and reactors while minimizing operator strain. Distinguished by its hinged cover design, this manhole allows the heavy lid to pivot open and rest securely against the vessel shell, eliminating the need to manually lift, remove, or store the cover during maintenance. Constructed from high-grade stainless steel, it combines operational convenience with superior corrosion resistance, making it ideal for frequent access applications in demanding industrial environments.

Key Features and Benefits

• Ergonomic Hinged Design: The cover is mounted on heavy-duty hinges, allowing it to swing open (typically up to 180°) and stay open, significantly reducing physical effort and improving safety during inspection and cleaning.

• Rapid Access: Available with quick-release clamps or swing bolts, enabling operators to open and close the manhole rapidly without the need for specialized tools.

• Safety Locking: Equipped with safety hasps or locking mechanisms to prevent accidental opening under pressure and to secure the cover in the open position during maintenance.

• Corrosion Resistance: Manufactured from ASTM A240 304/304L or 316/316L stainless steel, ensuring longevity in corrosive chemical, marine, and sanitary environments.

• Leak-Tight Seal: Precision-machined sealing surfaces paired with high-quality gaskets (EPDM, Silicone, Viton) ensure a reliable, pressure-tight seal when closed.

Technical Specifications

• Product Name: Stainless Steel Swing Type Manhole

• Material Grades: 304, 304L, 316, 316L, Duplex 2205.

• Size Range: Standard sizes DN300 (12"), DN400 (16"), DN450 (18"), DN500 (20"), DN600 (24").

• Pressure Ratings: Atmospheric (0 bar) to PN10 / PN16 / ANSI 150.

• Hinge Mechanism: External hinges (standard) or Internal hinges (for flush mounting).

• Sealing Surface: Raised Face (RF) or Flush/Concave.

• Standards: ASME B16.5, EN 1092-1, DIN, ISO, PED 2014/68/EU.

Applications

The Swing Type Manhole is widely utilized in industries where frequent tank entry is required:

• Chemical & Petrochemical: Storage tanks and reactors requiring regular internal inspection and cleaning.

• Food & Beverage: Brewing vessels, mixing tanks, and dairy silos where hygiene protocols demand frequent access.

• Pharmaceutical: Bioreactors and purified water tanks needing sterile, easy-to-clean entry points.

• Water Treatment: Filtration units and settling tanks.

• Marine & Offshore: Cargo tanks and ballast tanks on ships and platforms.

Quality Assurance

We are committed to delivering high-performance manholes that meet rigorous safety standards. Each swing type manhole undergoes comprehensive quality control, including material verification, hinge load testing, and pressure testing. We provide full traceability and documentation, including EN 10204 3.1 Mill Test Certificates, to ensure compliance with international codes and customer specifications.