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Tire, rubber & plastics

The production of tires is particularly challenging for valves. Tire curing presses work at high steam, water and nitrogen pressures and temperatures in rough ambient conditions. Short process cycles require very robust valves with a high switching capability in these conditions to achieve an acceptable life time and efficiency.

Two Schubert & Salzer Control Systems valve types have proven themselves in this application with tens of thousands of installations all around the world for many years already:
The angle seat valve 7010 in stainless steel features as on/off valve high Cv values in a very compact design, with various connection options and very easy maintenance. The high temperature version , specifically developed for the service at curing presses, ensure even high steam or hot water temperatures up to 428 °F, a long life time and shut-off reliability. They have also shown to be particularly durable against condensate and corrosive impacts from pipework or bladder deposits and provide the longest life time and best shut-off performance in the industry.

Control valve applications on the curing press are the shaping valve and the external platen & jacket valves, where the Schubert & Salzer sliding gate valve provides particular benefits due its unique features:

  • long life, even in applications with high delta p and dynamic control operation,
  • adaptibiliy to different control requirements for various tire sizes, press and heating concepts by easily interchangeable Cvs values/characteristics, Schubert & Salzer even develops tire production specific characteristics, which further increases the control result and the valve life time
  • their high control accuracy allows even the reduction of curing cycles, leading to improved productivity
  • quick and easy maintenance by simple replacement of the valve discs
  • the top mounted, integrated positioners make remote mounted i/p converters obsolete, no additional pressure reducing valves in front of the control valves are required any more.

Of course sliding gate valves cannot only be used at the curing press but also on main steam lines (steam headers), boilers, steam and N2 generation, mixers, calanders or in air conditioning.

Please find more information in our specific brochure for tire production.
Download brochure Schubert & Salzer - Your partner in Tire Production

Please more details also in our application report from world leading tire producer Continental.

Resins, plasics or rubber products are ever present in our daily lives – from hard plastics in computer screes, ball pens right to rubber in balls or tires. Their production process is complex and challenging, requiring high temperatures and pressures to process raw materials into a diversity of final products.

Already in the generation or raw fuels in refineries and lateron in crackers Schubert & Salzer valves, especially sliding gate valves are used for O2 control on furnaces for at cracker towers.

Schubert & Salzer valves are furter useed in any production and processing application where molds are heated by steam or hot water, at thermal and smelting processes or where resins get mixed, cooled or are being processed in liquid form.

An appliction example can be the curing of cable molds, where sliding gate valves control steam and water for the thermal treatment of this rubber molds. They also control steam at presses for the production of CDs or LPs. Other applications can be found in the production of plastic pipes in cooling and calibration systems, at blow molding processes for fuel or chemical containers, barrels or at EPS- and PPS-foamed products.

A core process is the vulcanisation of rubber products. Through high temperatures and pressurs over a defined period a raw rubber-sulfur material gets stabilised against environmental, chemical and mechanical impacts. Only this this process turns raw products in to an elastic material for further processing.

This critical and complex production process puts high demands on the applied valves: compact sizes, high control valve rangeability, quick reaction times, low energy consumption and simple maintenance.

Especially two valve types from Schubert & Salzer Control Systems have proven themselves in such applicatons:

The angle seat valve 7010 in stainless steel features as on/off valve high Kvs-values in a very compact design, with various connection options and very easy maintenance. The high temperature version , specifically developed for the service at curing presses, ensure even high steam or hot water temperatures up to 428 °F, a long life time and shut-off reliability. They have also shown to be particularly durable against condensate and corrosive impacts from pipework or bladder deposits and provide the longest life time and best shut-off performance in the industry.

Control valves control steam for the precise temperature regulation on these curing presses. The Schubert & Salzer sliding gate valve provides particular benefits due to its unique features:

  • long life, even in applications with high delta p and dynamic control operation,
  • adaptibiliy to different control requirements for various product sizes, press and heating concepts by easily interchangeable Kvs values/characteristics, which further increase the control result and the valve life time
  • their high control accuracy allows even the reduction of curing cycles, leading to improved productivity
  • quick and easy maintenance by simple replacement of the valve discs
  • the top mounted, integrated positioners make remote mounted i/p converters obsolete, no additional pressure reducing valves in front of the control valves are required any more.