Saveguard Thermolastic Exhaust Insulation System Introduction

World-wide, legislators are setting clear targets for the reduction of pollutant gases and particulate matter from diesel engine exhaust emissions. Despite significant advances in engine design, developments in catalytic converter and particulate filter systems appear to provide the most promising solution in meeting the tighter requirements.

Currently, most of the available systems are temperature dependant and research shows that heat loss from wide bore exhaust pipes can reduce the efficiency of the equipment used in exhaust gas conversion and particulate removal. Insulation is already used around converters and filter traps to enhance performance though the exhaust pipe from the engine manifold to the catalyst can is largely ignored. The new regulations also apply to existing vehicles and will necessitate a programme of retrofits, where the diversity of vehicle operating conditions will have to be taken into account, often when the vehicle is situated on another continent.

Retrofits will require an easy to fit, insulation kit. Variable engine load and frequent stops and starts, typically found on city buses, adversely effect the gas temperature cycles hence the catalyst equipment can become inefficient. Choosing a proven insulation system will reduce heat loss and optimise performance.

Advantages:

Can often be installed on the vehicle without removing exhaust
Efficient, high density insulation acts as heat store, reduces temperature fluctuation and heat loss
Fits any bore size
Long life, cost effective
Will not slip, bonds together on initial heating
Oil and water resistant coating
Each layer individually protected from water ingress
No special tools required
Insulation thickness can easily be varied along the pipe
Stays permanently flexible, can accommodate expansion joints.
Tough outer layer resists frost, stone chips etc.
Outer layer can be easily repaired or replaced in the event of physical damage
Clean to work with using only non toxic materials

Thermolastic Tape Image

Tools Required Image

Thermolastic tapes

No special tools required

In retrofit applications exhaust pipe configurations vary from vehicle to vehicle and it is unlikely that drawings will always be available, therefore on these occasions, bespoke insulation jacketing will not be an option.

The "fit all" Saveguard Thermolastic System can be the solution.

The Thermolastic Wrap system comprises of two main components, an insulating layer tape and an outer protective layer tape. The inner layer consists of high temperature insulation material bonded to a reflective film, in a unique format that allows the tape to stretch, thereby accommodating bends and avoiding slippage when wrapped

The outer layer consists of a self bonding, high temperature resistant elastomer that provides extra protection to the insulation layers. Flame Retardant to UL 94 V-0 . See table below for product selection

Thermolastic Insulation wrap is applied in layers according to the temperatures involved in the application, normally 3 layers. Fully illustrated fitting instructions available with each pack.

For higher temperatures it is recommended that at least one plain insulation layer is applied against the hot face with the reflective layers applied later see fitting instructions

Fully Insulated Exhaust Pipe

The information on this Data Sheet is strictly for guidance only and while provided in good faith cannot be guaranteed. The company reserves the right to alter or update this data as and when additional information is received. The Company’s products are used in a wide range of applications over which the Company has no control therefore the Company excludes all conditions or warranties whether expressed or implied as to the fitness of the product for any particular purpose.

Customers must establish product suitability via their own tests

Saveguard Thermolastic Insulation Products