sht

Potable Water and Radiator Connection System



The SHT system is a sliding sleeve flexible polybute plumbing heating system. Available in 16 20mm sizes and combines with our fusiotherm pipe system. Ideal for housing, maintenance and apartment fit outs.

 
  • Advantages
  • Quality
  • Fittings
  • Tools
  • Connection Technique
  • Working Pressures

Advantages

The advantages of the aquatherm® SHT - sliding sleeve system are:

  • Highly Flexible and easy to install
  • Corrosion Resistant
  • Hygienically neutral
  • Microbiologically impeccable
  • Low friction and excellent flow rates
  • Sliding sleeve connections
  • High temperature and pressure resistance

Aquatherm SHT pipes made from PB (Polybutylene) which are internationally recognized for their high creep behavior, this means improved temperature and pressure resistance compared to most plastics.

In the field of small dimensioned connection pipes, Polybutylene is convincing by its high flexibility for easy installation.

Advantages of the aquatherm® SHT-connection pipe

The advantages of the aquatherm® SHT-connection pipes in the field of floor connection are:

  • Oxygen barrier due to EVOH-coating
  • Hygienically neutral
  • Microbiologically impeccable
  • Corrosion resistant
  • Very flexible
  • Low friction loss

aquatherm® SHT-PB potable water and radiator connection pipes made from PB (polybutene) features by their high creep behaviour, which means, temperature and pressure resistance. The high heat resistance makes polybutene the ideal pipe material for hot water and heating installations. In the field of small dimensioned connection pipes, polybutene is convincing by its high flexibility.

Classification of service conditions

aquatherm® SHT-PB-connection pipes are applicable in all classes mentioned in ISO 10508.

SHT-PB-connection pipes
Classification acc. to ISO 10508
Class 1 Class 2 Class 3 Class 4 Class 5
Hot water
supply (60°)		 Hot water
supply
(70°)		 Low temperature
underfloor heating		 Underfloor heating
and low temperature
radiators
 High temperature
radiators

General Quality Requirements

For potable hot & cold water in accordance with AS/NZS 2642.2-1994 pipes made of Polybutylene (PB) for Hot & Cold applications.

DIN 16968          Polybutylene (PB) Pipes - General quality requirements & test

DIN 16969          Polybutylene (PB) Pipes - PB 125 dimensions

Building Code Durability & Compliance

aquatherm® SHT confirms compliance with NZBC Clause B2 durability & NZBC G12/AS1 water supplies as follows -

 BRANZ

Appraisals Certificate No 538/2006
DVGW

Certified DW - 8501AU2075 NO538/2006 aquatherm® SHT products in contact with water supply, mechanical testing & hygiene.
SKZ

Certificate for aquatherm® SHT durability & service life for pipes & fittings in contact with potable water.
AMS Laboratories AS/NZS4020

Compliance testing of aquatherm® SHT for both in line and end of line usage for hot & cold applications up to 80°C.
WRAS

Certification of testing for aquatherm® SHT BS 6920 for products in contact with water intended for human consumption.
TZW

Certificate of testing confirming aquatherm® SHT meets the requirements of DVGW W270 microorganisms on materials used for potable water.

Quality assurance

aquatherm's production of a quality controlled pipe system demands the supervision regulations & control of all work operations. All results and processes have to be documented and meet the requirements of

  • DIN guidelines
  • DVGW working sheets
  • Supervisory regulations of the SKZ

 

Brass fittings

Fitting with brass insert

Material:
aquatherm® SHT-fittings with threads and inserts made from dezincification resistant brass.

Material designation:
PPSU = Polyphenylene sulphone / Brass

Characteristics:
All fittings of the aquatherm® SHT-system are – due to the latest European Potable Water Standard – made from a dezincification resistant brass. This type of brass has been developed especially for the application in areas with aggressive water. aquatherm applies this standard brass for all metal fittings and connection pieces.

Fittings made of PPSU

Fitting made from PPSU

Material:
aquatherm® SHT-system fittings made from the plastic PPSU (PPSU = Polyphenylene sulphone)

Characteristics:
The advantages of complementary aquatherm® SHTsystem fittings are:

  • High heat resistant
  • High impact rate
  • Low stress cracking susceptibility
  • Chemical resistant
  • Hygienical harmlessness
  • No corrosion
  • No o-ring application
  • No diminished cross-section
  • Reduction of metal influences to potable water
  • Considerable weight reduction compared to brass fittings
  • Environmentally friendly production, as the material PPSU is recyclable

These favourable characteristics of the aquatherm® SHT offer multiple fields of applications. The material PPSU is applied for the aviation and space industry as well as for medicine technique. Especially regarding the safeness with food contact, particularly with potable water, the aquatherm® SHT system fittings made from PPSU are first choice in the field of potable water technique. Even high temperature and pressure stability.

Requirements & Limitations of aquatherm® SHT

  • Must be installed to the requirements of the NZBC (all relevant clauses) and in accordance with manufacturers technical requirements.
  • Must be installed by an aquatherm registered installer.
  • Can be used for flow and return hot water ring mains within the parameters of temperature and pressure chart.
  • Pipe (only) can be laid directly in concrete/plaster and solid walls in accordance with aquatherm® SHT installation procedures.
  • All in ground services & inslab installations must be installed to AS/NZS 3500.5.2000 Clause 2.13.2.
  • Pipe must be clipped as to aquatherm support intervals for SHT using brand matched clips or clippets. Ensure all pipe work is installed to NZBC requirements.
  • Can be used for radiator connections however it is recommended that EVOH barrier products are installed in accordance with DIN 4721 & pipe work is clearly identified as heating flow and return.
  • Pipes & fittings shall not be used within 1 meter of the inlet or outlet of a water heater.
  • Pipe & fittings shall not be used when exposed to direct sunlight.
  • Is not suitable for chemicals or petroleum oils.
  • Pipe must not be used on the flow & returns from solar panels, wetbacks or relief drains of an uncontrolled heat source.
  • When connecting to other piping systems always use thread connector. Do not use aquatherm Sliding Sleeve connector.
  • When used as an alternative non potable supply, ensure pipes are clearly & permanently labeled in accordance with AS1345 & AS1319.

Transport & Storage

Handle and store pipes and fittings to avoid damage when stored on site ensure they are:

  • Under cover
  • Out of direct Sunlight
  • On a flat surface
  • Away from active site construction
  • Stored away from paints, chemicals, grease and other active substances.

Ensure that unprotected pipes are not dragged across the ground or concrete floor. Where ever possible keep pipes in original packaging

aquatherm® SHT Tools:

The aquatherm® SHT sliding sleeve system has a very simple connection technique. You will only need:

  • an expanding tool
  • a mounting tool

to get an unsolvable connection.

Both tools are equipped with interchangeable false jaws for the dimensions Ø 16mm and 20mm. The tools including a plastic pipe cutter, are supplied in a handy steel case.

Tool Change

The interchangeable head of the expanding tool is screwed off then the required dimension if fixed.

Only remove the bolts to change both inserts of the aquatherm® SHT mounting tool. After inserting the false jaw the bolts need to be inserted in opposing directions.

The expanding head, expanding tool and mounting tool requires light lubrication to avoid wear and tear.

Important notice:

aquatherm® Ltd does not recommend the installation of other branded pipe fittings with the aquatherm® SHT range.

Sliding Sleeve

The connection technique sliding sleeve is an interlocking connection type.

The durable tight connection results from pressing the aquatherm® SHT sliding sleeve onto the aquatherm® SHT pipe with the aquatherm® SHT fitting.

Only use the sliding sleeve technique by means of aquatherm® SHT system pipes, tools, fittings and connection pieces supplied by aquatherm.

Connection Technique

aquatherm® SHT uses an interlocking connection giving it a durable, tight result.

The connection technique involves pressing the aquatherm® SHT sliding sleeve onto the aquatherm® SHT pipe using the fitting. It is important to use only the aquatherm® SHT system pipes, tool, fittings and connection pieces made by aquatherm when connecting with sliding sleeve.

1. Compressing the corrugated pipe

If using corrugated pipe the PE- corrugated pipe is compressed and can be adjusted with the red or blue end sleeve. It is not necessary to cut the corrugated pipe before connecting it.

2. Put the sliding sleeve onto the pipe

Before expanding the connection pipe, the SHT- Sleeve has to be slid onto the pipe. This sleeve is identical on both slides - inside and outside. It does not make any difference which side is pushed onto the pipe, onto the fitting.

3. Expanding of the connection pipe

To expand the pipe, the tool has to be opened completely, so that you can insert it into the pipe end; the expanding tool is pressed together; the aquatherm® SHT connection pipe is bulge formed, the tool should be opened again, turned slightly and closed again that the pipe is expanded steadily.

Attention!

If the temperatures are below 0°C, the pipe must be warmed up by hand before expanding it. White discolourations are unproblematic. With EVOH-oxygen tight pipes the coating is only expanded lightly neither without influencing the tightness of the pipe connection nor the oxygen barrier.

NOTE: The sliding sleeve must be kept away from the expanding area as otherwise the tool and pipe might be damaged.

Pressing

The expanded pipe end is pushed on the corrugated part of the pipe supporting body up to the stop.

Now the assembly tool is put on.

On compressing the tool the sleeve presses the plastic pipe onto the supporting body. That quick and safe unsolvable connection is installed.

Permissible working pressures: aquatherm® SHT

Permissible working pressure for potable water installations to

DIN 16969

Temperature
Service Life
Permissible working pressure in Bar
Safety Factor = 1.25
 

0 - 20°C

 5 22.9
10 22.7
25 22.2
50 21.8
    30°C 5 21.5
10 21.1
25 20.5
50 20.1
    40°C 5 19.8
10 19.3
25 18.8
50 18.3
    50°C 5 17.9
10 17.4
25 16.9
50 16.4
    60°C 5 15.8
10 15.4
25 14.8
50 14.3
    70°C 5 13.5
10 13.1
25 12.5
50 12.1
75°C 5 12.0
10 11.6
25 11.7
50 10.14

  80°C

 5 11.1
10 10.6
25 10.1
50 9.5

aquatherm® SHT is designed for normal operation of temperatures of up to 80°C and can also with stand temperatures of up to 110°C. For further information on this please contact our technical team on 09 570 7204.