Twist Lock Hatches

Twist Lock Hatch

ModelUMC-474

The Twist Lock hatch is a simple proven design for hatch enclosures. The twist engagement method for securing this hatch makes this the simplest hatch to operate. This hatch is made from high strength cast steel with reinforced ribs. Built-in lift-out handles are molded into the cover plate for convenience.

Models: UMC-474 · UMC-474-5
Part no.: 08640-101A · 08641-101A
Material: ASTM A27-70-36 Cast Steel · Painted Primer Grey · UMC-474 Cast Steel Hatch with Cast Steel Deck Ring
Category: Twist Lock Hatches

Built to ABS standardsQuote within 48 hWorldwide shipping

Overview

Specifications

Dimensions in inches (mm)

Model Number	Part Number	Description	Clear Opening In. (mm)	Weight Total Lbs (Kgs.)	Cutout Dimension in. (mm)
UMC-474	08640-101A	Flush 18″ Round Twist Lock Hatch	18.6″ (472)	85 (39)	24.75″ (629)
UMC-474-5	08641-101A	Raised 18″ Round Twist Lock Hatch W/ 5″ Coaming	18.6″ (472)	118 (54)	24.75″ (629)

Hardware

Gasket – Nitrile Rubber
Chain – Galvanized Steel
Coaming (Optional) – Steel

Features

High strength cast steel construction.
Lift-out grab handles cast into cover.
Reinforced steel ribs on cover to provide greater impact resistance.
Galvanized keeper chain ensures the cover stays attached and will never get lost.

Application

Twist lock hatches are typically found along the gunnels of a barge as well as on the bow/ stern and on top of cargo compartments or tanks. They are used to access wing tanks, the rake compartment, cargo compartments etc. for venting, filling, and inspecting.