Product Catalog

Engineered for endurance. Our comprehensive range of storage tank equipment meets the most rigorous API 650 industrial requirements.
Product Categories

Engineered Solutions for every tank application

External Floating Roof
Internal Floating Roof Seals
Internal Floating Roof
Aluminium Geodesic Dome Roof
Floating Suction Units / Skimmer Units
Tank Accessories

1

External Floating Roof

High performance equipment designed for exteral floating roof tanks.

A. Primary Seals

Mechanical Shoe Seal
Designed with “Y” Scissors Hanger mechanism for flexibility and lower mechanical stress. Plate springs with entre spring for even seal pressure and superior sealing performance.
Flexi Mk3 Seal
Designed with array flexi-shoe plates for light weight and easy installation.
Foam Log Seal
A legacy seal with foam encapsulated in seal fabric forming an annular seal like giant “O” ring in the rim annular space.

B. Secondary Seals

HKN Roller Double Wiper Secondary Seal
Features:
  • Reduces secondary seal friction.
  • Coverage for larger rim gap due to roller extension.
  • Reduces pressure on the seal wiper.
  • Advantages:
  • Can be changed with tank in service.
  • Prevents folding of secondary seal and/or its wiper.
Flexi-Low Profile Secondary Seal
HKN TankMaster Flexi-Wiper Low Profile Secondary Seal is specially designed with low operating height This low height allows for more tank useable storage inventory. Materials used are stainless steel, Teflon and neoprene. These make the seal compatible for use in most products.

C. Roof Drains

Pivoted Joint Roof Drain System

This is the simplest roof drain system available. It is easy to install
and is very cost effective. Using in conjunction with the pivoted joints
are standard API Sch. 40 pipes, ANSI #150 RF flanges and spiral
wound stainless steel metallic gaskets. The pivoted roof drain system
can be perceived as a combination of a flexible hose system and
a rigid pipe system, offering the unique advantages of both systems
without their short comings.

Swivel Joint Drain System

The swivel joints have been used for many years in external floating
roof drain system. The joints are normally connected to API Sch 40 pipes
to form a roof drain system. 

2

Internal Floating Roof Seals

High performance components designed for exteral floating roof tanks.

A. Primary Seals

Mechanical Shoe Seal before installing vapour fabric.
Mechanical shoe seal after Installing vapour fabric.
Mechanical shoe seal with wiper secondary seal . Long service life and effective emission control.
Single wiper : Light weight PE Wiper for long service life and easy installation.
Double wiper: Light weight PE wipers with long service life, good emission control and easy installation.
Flex-Mk3 Seal: Designed with array flexi-shoe plates for light weight and easy installation.

3

Internal Floating Roof

High performance components designed for exteral floating roof tanks.

A. Primary Seals

HKN Tanks manufacture a range of internal floating roofs:-
  1. Full contact type
  2. Pontoon type
  3. Hybride type
All are designed for:-
  • Heavy duty and durability.
  • Main struts are “l” or “phi” sections. with generous section modulus.
  • Easy installation.

4

Aluminium Geodesic Dome Roof

High performance components designed for exteral floating roof tanks.

A. Primary Seals

Geodesic dome roof is a good piece equipment to keep a product clean. A domed external floating roof keeps the floating roof from the elements and hence reduces maintenance cost. Being in aluminium, a dome roof requires very little maintenance over its life time.

5

Floating Suction Units / Skimmer Units

High performance components designed for exteral floating roof tanks.

A. Primary Seals

Floating suction units are designed to draw product from near liquid level. This is to ensure clean product is drawn out at all times. This is very important for applications like Jet-A fuel tanks and fuel tanks for sensitive equipment like power plant generators.
The TankMaster® range of floating suction units are individually designed to suit each application. They can be made in carbon steel, aluminum or stainless steel. In a tall tank, a double swing joints may be required to achieve the desired operating height.
Skimmer units are designed to draw liquid at a pre-determined level below a product level. This is to ensure that oil or environmentally detrimental by-products of a process that float on a product level are skimmed off before the content of the tank is discharged.
TankMaster® provides uniquely designed floating suction units and skimmers to meet each individual and unique requirement.
Various options of joints and designs are available at HKN Tanks. Choose an option that best suits your purpose.

6

Tank Accessories

High performance components designed for exteral floating roof tanks.

Gauge pole Seals
Leg Cup Seal for Roof Legs
Lip Seal for Manholes Roof Compartments
Dome Roof Walkway and Stairs
Pipe and column seals
Roof Drain Ball Float Check Valve
Leg Sock
Seal Fabric Teflon, PU, Neoprene etc.
Tank Chime Sealant
Gauge Hatch
Flexi-Composite Hose for Pivoted Roof Drain

Require a Custom Engineering Solution?

Our team of specialists can design and fabricate equipment to meet your unique storage requirements and local environmental conditions.