Raised Watertight Hatches

Raised 8" and 10" Ullage Hatches

ModelUMC-144, UMC-569

The Ullage hatch is a strong and secure method of enclosing a tank compartment while still providing easy single bolt operation for inspection or measuring of cargo. Available in 8” and 10” diameters.

Models: UMC-144 · UMC-144-5 · UMC-144-12 · UMC-569-5 · UMC-144-SS · UMC-144-5-SS · UMC-569-5-SS
Part no.: 01242-102A · 01242-104B · 01242-116A · 01243-101A · 01242-102S · 01242-104S · 01243-101S
Material: Cover: ASTM- A27- 60-30 Cast Steel · Coaming: Steel (ASTM A36) · Painted Primer Grey
Category: Raised Watertight 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.)
UMC-144	01242-102A	8″ Round Ullage w/ 7/8″ Coaming	8″ (203)	21 (10)
UMC-144-5	01242-104B	8″ Round Ullage w/ 5″ Coaming	8″ (203)	33 (15)
UMC-144-12	01242-116A	8″ Round Ullage w/ 12″ Coaming	8″ (203)	49 (22)
UMC-569-5	01243-101A	10″ Round Ullage w/ 5″ Coaming	10″ (254)	40 (18)
UMC-144-SS	01242-102S	8″ Round Ullage w/ 7/8″ Coaming (Stainless Steel)	8″ (203)	21 (10)
UMC-144-5-SS	01242-104S	8″ Round Ullage w/ 5″ Coaming (Stainless Steel)	8″ (203)	33 (15)
UMC-569-5-SS	01243-101S	10″ Round Ullage w/ 5″ Coaming (Stainless Steel)	10″ (254)	40 (18)

Hardware

Tumble Bolt – Bronze
Dog Handle – Steel
Lug Bolt 5/8-11 – Bronze
Lug Nut 5/8-11 – Stainless Steel
Washer – Stainless Steel
Gasket – Nitrile Rubber

Features

Various standard coaming heights available (Custom coaming heights available upon request).
Other gasket material available upon request.
Various hardware options available:
Steel, Stainless Steel, & Bronze Dog Handles (available with or without grease fittings).
Bronze & Stainless Steel Tumble Bolts.
Lug Bolts and Nuts made from dissimilar metals to prevent galling and corrosion.
Flame screens available upon request (sold separately).

Application

Ullage hatches are commonly found welded to the top of a raised watertight hatch or on top of the cargo compartments of tank barges. They are typically used as a vent or an inspection port to measure or verify cargo as well as fill a tank.