Technical notes

Dimensions and weights

Unless otherwise stated, all dimensions are in mm and weights in grams (g).
PN = Nominal pressure in bar 1 bar 10N / cm² => approx. 10m water column
DN = Nominal size in inches or mm 1" = 25.4 mm => approx. 25 mm
The nominal pressure corresponds to the maximum applicable pressure at the reference temperature - unless otherwise stated - of 20°C.
The nominal pressure is the gauge pressure under consideration of all operating circumstances, including pressure surges. This depends on the operating temperature, type of medium, size of the component/valve and, if applicable, the type of sealing.
For certain areas of application, there are statutory regulations or rules which take precedence over the guidelines given in this catalogue.

Medium

The information on pressure and temperature conditions given in the catalogue refers to the medium water. Whether there is suitability for gases, oils, glycol-containing or other media should be enquired by stating the operating pressure and operating temperature. Our information on usability must not be transferred to media or operating conditions other than those approved without our approval.

Special models

If there is no suitable article for you in our standard programme, we can also produce special models on request. To do this, we need your specified enquiry with the corresponding quantities as well as drawings or sample parts.

Assembly instructions

A) Thread

Care must be taken to ensure that the connecting dimensions - and threads are always selected to match each other in terms of dimensions. Threads should not be excessively sealed with hemp or sealing tape, i.e. after applying the hemp, the thread tips must still be visible. Excessive sealing of threads leads to increased stresses in the component. These tensions can ultimately lead to cracking. In order to avoid damage during assembly, the components should be screwed in as intended using suitable tools of conventional design, without applying excessive force and without lever extension. Valves with self-seals must not be additionally sealed with hemp or sealing tape. Make sure that the corresponding counter threads are sufficiently long (min. 12 mm). All components, if present, are to be installed only on the spanner flats provided for this purpose by means of a suitable spanner / pliers. The installation of our products must be carried out stress-free when taking into account the aforementioned instructions. Aligning e.g. radiators using screw connections supplied by us is not permitted, as this can lead to stress cracks and consequential damage even later. The connection of different metals or alloys may lead to corrosion, for which puteus GmbH cannot be held liable (e.g. connections of brass with stainless steel or copper with galvanised metals). These properties must be clarified before installing our products. After installation, the components must be subjected to a careful pressure-tightness test. In any case, the installation instructions enclosed with the components, if any, must be observed.

B) Gate valve

During disassembly/repair/repair work, the bonnet must only be reassembled with the sealing wedge screwed up. Do not damage sealing surfaces/wedge seats. Sealing wedges are not interchangeable.

C) Threaded sleeve sliders

As a matter of principle, these are only to be installed in closed condition. Wedge seats must not be damaged by forcibly screwing in the pipes.

D) Ball valves

To ensure functionality, e.g. ball valves may only be subjected to very low static and dynamic forces. If necessary, the component should be supported by suitable measures (e.g. pipe clamps or similar). The torque to be applied to the ball valve may only be transmitted at the spanner flat of the screw-in side, otherwise there is a risk that the ball valve will leak or crack. Likewise, the body and screw-in part of the ball valve must not be twisted against each other. This will also cause leakage and/or risk of breakage.

E) Pipe and hose connections

Pipe and hose connections to appliances containing non-potable water (e.g. washing machines) must be connected to a water tapping point with a system separator in accordance with DIN EN 1717 in order to prevent service water from flowing back into the potable water system.

Further notes:

All valves (outlet valves, non-return valves, foot valves, shut-off valves, ball valves, etc.) are not frost-proof unless otherwise specified or provided with a drain plug that is used to drain the valve before the frost period.
Chrome-plated surfaces, e.g. on sanitary fittings or appliance connection valves, are sensitive to limescale-dissolving agents, acidic cleaning agents and all types of scouring agents. These surfaces may only be cleaned with clear water and a soft cloth (leather).

Our pumps, wall-mounted and floor-standing fountains are provided at the factory with a simple protective coating for the transport route. This coat of paint is not intended as a permanent corrosion protection or visual coating.

For wearing parts.

We do not accept any warranty for parts subject to wear, in the event of corrosion or malfunctions caused by very calcareous water or by contaminated water pipes (e.g. in the case of seals or mixing nozzles) or in the event of improper assembly, chemical or mechanical effects during transport, storage, connection, repair or use and improper handling of the products.

We assume the statutory warranty for our products for defects that are due to material or manufacturing defects or that occur during intended use. Defects resulting from non-observance of the above instructions are excluded from the warranty.
When the catalogue is published, previous documents lose their validity. Our catalogue serves exclusively as an information and working basis for wholesalers, industry and technical trade. It is not a sales document.

Returns may only be made after prior written agreement, this applies in particular to custom-made products. Unfree returns will be rejected. Dimensions and illustrations, as well as descriptions and packaging units are non-binding. They are for information purposes only, without any legal obligation being derived therefrom. We reserve the right to make technical and formal changes which serve the purpose of technical development or are necessary for economic reasons. Changes and additions are made on an ongoing basis. We accept no liability for any printing errors or deviating illustrations. In the case of missing size information, the values were not yet available at the start of printing.

Recommendations for handling hoses

The service life of a rubber hose depends on various factors.

  • Range of use
  • Medium
  • Abrasion
  • Storage
  • etc.

Therefore, no general indication of the service life of a hose can be given. The end user should therefore regularly check the hose and replace it if necessary.

A rubber compound changes its characteristics over time due to its chemical properties. These processes can be accelerated by improper handling or other factors. Therefore, we make the following recommendations:

Storage
  1. Avoid long storage periods! Otherwise, regular checks are important.
  2. Store the hose ideally at +10° - -25°C. Storage temperatures below 0°C or above 40°C will damage the hose. Do not store near heat sources! Avoid very dry air and high humidity.
  3. No direct sunlight or aggressive artificial light at the storage location!
  4. Air draught and ozone can attack the material. Therefore, do not store high-voltage devices, electric motors or similar in the vicinity. There is a risk of sparking or of charging and heating of possibly mounted metal couplings.
  5. Diverse materials attack the hose. Therefore, please avoid contact or proximity to: solvents, fuels, acids, disinfectants, wood preservatives, volatile or organic chemical substances and mixtures. Manganese, iron, copper and copper alloys attack some rubber compounds.
  6. Storage must be loose and free of tension to avoid compression or deformation. Rolled-up hoses should be stored horizontally. Please do not stack them or pay attention to the weight in order to avoid deformation! A minimum bending radius specified by the manufacturer must be observed to avoid kinks.
  7. Before delivery or resale, the hose must be inspected and mounted hose fittings must be checked for suitability and proper fit.
  8. Clean used hose before re-storage (make sure the cleaning agent is suitable!). This applies especially to use with chemical, explosive or abrasive media. A check for reuse is unavoidable.
Use
  1. Hoses are only to be used for their intended purpose, misuse e.g. as a hauling rope or similar is not permitted.
  2. Before use, check whether the hose is suitable for the required area of application due to its properties, type and dimensions.
  3. Care must be taken when transporting the hose. The hose must not be subjected to rough impacts or tensile forces over rough surfaces. Twisting, knotting and kinking are to be avoided.
  4. Please observe the specified operating pressure! The pressure is to be increased in the air bubble-free hose only gradually up to the max. operating pressure in order to check the hose for leaks.
  5. The hose is used to convey and pass the media approved by the manufacturer. Immersion in these media is thus not approved.
  6. Consider the ambient temperature and the maximum permissible operating temperature, which depends on the medium. Exclude the vicinity of heat sources.
  7. The materials of the hose must be resistant to the medium being passed through. Check this before use. Changes in media concentration, duration of use and temperature can lead to changes in resistance here.
  8. Depending on the type of medium or pulling the hose over different surfaces, different degrees of abrasion may occur. The wear of the hose assembly must therefore be taken into account and checked regularly.
  9. Please make sure to lay hose lines, hose fittings and couplings  as well as  connections protected from contamination in order to avoid contamination of  hose and medium. This applies particularly in the drinking water sector.
  10. Do not lay hoses on roadways or, if necessary, protect them from being driven over. Use e.g. hose bridges or similar.
  11. Mounted puteus spray nozzles, hose couplings or fittings are not designed as end or permanent  shut-off fittings. Hose line and mounted hose fittings/spray nozzles  must not be exposed to permanent water pressure in order to prevent hose fittings from breaking off or the hose from bursting. After completion of the work, the water supply to the hose must therefore be turned off.
Assembly/intercommissioning of hose assemblies in the technical area

Please note:

  1. Before commissioning, the hose assembly must be inspected in accordance with the relevant ordinances, standards and rules, e.g. the employers' liability insurance association's leaflet T002, §§14 and 15, the Ordinance on Industrial Safety and Health (BetrSichV) or the Technical Rules for Industrial Safety and Health (TRBS).
  2. If there is visible damage to the line, it must not be put into operation.
  3. Hose lines with specified test intervals must not be operated after the test date has expired. A test of hose assemblies is always required after repair.
  4. Prior to commissioning, hose assemblies must be cleaned if necessary. The resistance of the hose to the cleaning agents must be taken into account.
  5. With regard to electrostatic hazards, TRBS 2153 "Avoidance of ignition hazards due to electrostatic charges" must be observed and complied with.
  6. When changing different transmission media, the line must be cleaned beforehand to avoid a possible chemical reaction or contamination of the new media.
  7. For special purposes or construction projects, it is essential to comply with the manufacturer's regulations.
Disposal

Please observe the regulations of your municipality, if applicable, if you wish to dispose of hose materials and/or fittings.

Recommendations for the use of ball valves

1. General information
Ball valves serve as shut-off valves for pressurised media. The manufacturer's instructions on flow media, operating pressure and temperature range must be observed. If media other than those approved are used, the service life of the ball valve may be shortened or the ball valve may fail. The installation may only be carried out in pressurised systems. Possible pressure surges due to the quick-acting closure must be taken into account, as these can damage the pipe system. Opening and closing are each carried out via a 90° turn of the lever; intermediate positions of the lever are not permissible in the operating state. Ball valves are to be stored dry, free of dirt and out of direct sunlight.

2. Installation and removal instructions
Ball valves may only be used in compliance with the requirements necessary for the intended use. Installation must be carried out by qualified personnel, free of stress and with suitable tools in a depressurised state. The ball valve must not be turned by force, for example, or used to align a pipeline. The ball valve must be checked for transport damage before installation, and pipelines must be flushed before commissioning. Do not clamp the ball valve too tightly in a vice or similar for pre-assembly in order to avoid damage and stress cracks on the body/housing. Any tapping of the threads must not be carried out too strongly in accordance with the general installation regulations; the thread tips must remain visible. The ball valve must be countered on the installation side on the spanner flats provided. Never use tools on the body or on the side opposite the installation side! Do not exceed the specified tightening torques; any sensor plugs must be tightened to max. 15 Nm. The handle is not an assembly lever! The use of ball outlet valves is only permitted with free outlet in order to prevent any backflow of domestic water into the pipe system. Ball outlet valves are not suitable for installation within the house piping system/drinking water system or as an appliance connection valve. A function and leak test must be carried out after installation and before commissioning.

3. Commissioning
Operating conditions and installation work must be checked again before commissioning. Note: Due to longer storage or downtime, the opening torque may be significantly higher than the actual torque. Deaerate the piping system before commissioning. Air bubbles can cause explosions or damage to the piping system in the event of pressure surges. The pressure should therefore be built up slowly. Ball valves that are used as end fittings in a pipeline must be professionally closed at the unused connection to prevent them from being torn out by force. Danger! The ball valve must not be operated with leverage or force-intensifying tools (e.g. hammer, pliers, extensions, etc.)!

4. Maintenance and inspection
Depending on the installation situation, ball valves must be emptied before the frost period or before cleaning measures, the emptying should also be carried out here via a 45° position of the lever in order to also empty the construction-related dead space in the housing. A check for tightness, function and damage should be carried out regularly, depending on the operating conditions also at shorter intervals. In the case of longer standstill periods, a check should be carried out at intervals of a few months to ensure proper functioning. Faulty, corroded ball valves or ball valves that can only be operated to a limited extent should be replaced during maintenance work. Replacement and removal may only be carried out by qualified personnel when the pipeline is depressurised.

5. Warnings
The manufacturer accepts no liability in the event of assembly errors or incorrect operation, inadmissible operating situations or media or in the event of faults that occur due to general wear and tear of the ball valve. The ball valve is not a throttle valve! It may only be put into operation in a fully open or closed state to avoid damage to seals in the ball area. Depending on the operating situation, the body of the ball valve may heat up considerably. Danger! The relevant health and safety regulations, national regulations and technical rules and standards for specific operating and installation situations must be observed. Viscous or hardenable media as well as certain chemical substances can impair the function of the ball valve or make it impossible. Please observe the manufacturer's instructions! Contaminated media, e.g. containing sand, can cause damage to the seals. Failure to observe the permissible operating pressure or operating temperature may result in leaks and the ball valve tearing apart. Danger! (as at: Nov. 2016)

Legal information:
According to the Drinking Water Ordinance [esp. §§ 3 and 17], every tapping point for water that is not intended for human consumption must be permanently marked with the notice "not drinking water" and secured against improper use! Tapping points of water not of drinking water quality installed in the household in addition to the drinking water supply system must be reported to the public health department!

Dimensions and illustrations, as well as descriptions and packaging units are non-binding. They are for information purposes only, without any legal obligation being derived from them.
We reserve the right to make technical and formal changes that serve technical further development or are necessary for economic reasons. Changes and additions are made on an ongoing basis.
We accept no liability for any printing errors or deviating illustrations. In the case of missing size specifications, the values were not yet available at the time of printing.