THE DIVERSITY of our products
THE modular system
We offer a wide range of materials and modular extensions so that our bulk material valves can be adapted to almost any operational conditions.
Considering all resistances and limits, you can choose different materials or coatings for each component to ensure a long and safe life of your equipment.
Housing
SEALS
Spare parts
Gate valve blade
Corrosion is often the reason for damaged components. Besides visible cracks and holes on the surface, serious internal material damage and embrittlement can quickly become a risk to the entire process. In particular hazardous to health, flammable or explosive media can cause serious problems if leaks occur. Therefore, all used materials must have suitable corrosion resistance.
The Housing
Steel
1.0038 (S235JR)
Unalloyed structural steel
Resistance:
Non or low corrosion resistant.
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1.0619 (GS-C 25)
(GP240GH)
Heat resistant ferritic cast steel
Resistance:
Non or low corrosion resistant.
Temperature range:
up to 450°C
Applications:
- Water
- Gas
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1.0425 (P265GH)
Heat restistant pressure vessel steel, unalloyed steel
Resistance:
Low resistance to corrosion.
Temperature range:
up to 400°C
Applications:
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Stainless steel
1.4301 (X5CrNi18-10)
(AISI 304 or V2A)
Austenitic Chrome-Nickel-Steel
Resistance:
Very corrosion resistant, stainless, good resistance to organic acids, salt solutions, alkaline solutions at moderate temperature.
Temperature range:
-50 °C to +600°C
Applications:
- Food industry
- Building industry
- Paper industry
- Chemical Industry
- Pharma industry
- Petrochemical industry
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1.4308 (GX5CrNi19-10)
(AISI CF-8 or V2A)
Austenitic precision casting
Resistance:
Corrosion resistant, stainless, good acid resistance Antimagnetic
Temperature range:
up to 600°C
Pressure range:
High pressure
Applications:
- Food industry
- Chemical Industry (without chloride load)
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1.4401 (X5CrNiMo17-12-2)
(AISI 316 oder V4A)
Austenitic Chrome-Nickel-Steel
Resistance:
Very good corrosion resistance, with moderate chloride content, stainless, antimagnetic.
Temperature range:
up to 600°C
Applications:
- Food industry
- Chemical Industry
- Cellulose industry
- Textile industry
- Building industry
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1.4408 (GX5CrNiMo19-11-2)
(AISI 316)
Austenitic stainless steel
Resistance:
Very good corrosion resistance, acid resistant, stainless, anti-magnetic.
Pressure range:
High pressure
Applications:
- Food industry
- Chemical Industry
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1.4462 Duplex® (X2CrNiMoN22-5-3)
(A 182F51)
Austenitic ferritic chrome-nickel-molybdenum steel
Resistance:
Rust and acid resistant, very high corrosion resistance, even with media containing acids and chlorides (nitric acid, sulfuric acid). Higher strength compared to chrome-nickel steel, high resistance to energy absorption
Temperature range:
from -100 °C up to +250 °C
Applications:
- Building industry
- Food industry
- Chemical Industry
- Engineering
- Petro Industry
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1.4571 (X6CrNiMoTi17-12-2)
(AISI 316 TI, A4)
Austenitic stainless steel
Resistance:
Very good corrosion resistance, acid resistant, stainless, anti-magnetic.
Temperature range::
up to 700°C
Applications:
- Food industry
- Chemical Industry
- Pharma industry
- cellulose production
- Plastics industry
- Textile industry
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1.4828 (X15CrNiSi20-12)
(AISI 309)
Austenitic chrome-nickel steel with added silicon
Resistance:
Moderate corrosion resistance, but in sulfurous atmosphere, stainless.
Temperature range::
up to 950°C
Applications:
- Building industry
- Chemical Industry
- Petro chemistry
- Cement industry
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1.4878 (X8CrNiTi18-10)
(AISI 321H)
Austenitic chrome-nickel steel with added titanium
Resistance:
Good corrosion resistance, with low salt and chlorine content, stainless.
Temperature range:
to 850°C
Applications:
- Food industry
- Chemical Industry
- Petro chemistry
- Cellulose and paper industry
- Building industry
- Nuclear Technology
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Aluminum
3.2381.01 (G-AlSi10Mg)
Cast aluminum alloy
Resistance:
Excellent corrosion resistance, good strength and resilience, high chemical resistance.
Temperature range:
Applications:
- Food industry
- Textile industry
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3.2341 (G-AlSi5Mg)
Cast aluminum alloy
Resistance:
Excellent resistance to weathering and corrosion.
Temperature range:
Applications:
- Food industry
- Pharma industry
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Sealing
Plastics
PTFE (Polytetrafluorethylen)
Properties:
Optimal sliding properties, long service life, low wear, high load capacity, low thermal expansion, non-flammable. Very good ozone and weather resistance.
Resistance:
Very good chemical resistance, against almost all acids and alkalis, oils, fuels, solvents and aggressive media.
Temperature range:
– 100°C to +260°C
Applications:
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Elastomers
VMQ (Silicone Rubber)
Properties:
Very high ductility, low wear, food safe.
Resistance:
Exceptional resistance to high and low temperatures, without significant deformation, resistant to, for example:
- Biodiesel and biogas
- Dilute hydrochloric acids
- Animal and vegetable oils and fats
- Ozone, aging and weather resistant
Not suitable for e.g. acids and alkalis, silicone oils and greases, water vapor above 120°C
Temperature range:
– 55°C to 200°C
Applications:
- Food industry
- Pharma industry
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MFQ (Fluor-Silicon-Rubber)
Properties:
Very good ozone and weather resistance.
Resistance:
Excellent resistance to oils, fuels and solvents, chlorinated
Hydrocarbons and alcohols.
Temperature range:
-70°C to +200°C
Applications:
- Chemical Industry
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NBR (Acrylonitrile Butadiene Rubber)
Properties:
Good mechanical properties, high abrasion resistance and stability, partially gas-tight.
Resistance:
Excellent resistance to aliphatic hydrocarbons such as propane, butane, gasoline, mineral oils and greases, diesel fuels as well as fuel oil, silicone oils and silicone grease, many dilute acids, bases, salt solutions and alkalis. Partially resistant to ozone and weathering.
Temperature range:
– 25°C to 100°C
Applications:
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FKM/ Viton® (Fluororubber)
Properties:
Very good mechanical values, aging resistant, gas tight.
Resistance:
Exceptional resistance to mineral oils and greases, aliphatic and aromatic hydrocarbons, chlorinated hydrocarbons, acids, weak alkalis, synthetic hydraulic fluids, fuels, mineral oils, aromatics and many organic solvents and chemicals resistant, very good temperature resistance. Very good ozone, weather and aging resistance.
Not resistant to aromatic mineral oils
Temperature range:
-20°C to +220°C
Applications:
- Chemical Industry
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EPDM (Ethylene Propylene Diene Rubber)
Properties:
Very good resistance to ozone, aging and weathering.
Resistance:
Resistant to silicone oils and greases, hot water and steam, glycol-based brake fluids up to +150°C, phosphoric ester-based hydraulic fluids, acids and alkalis.
Not resistant to mineral oil products.
Temperature range:
-30°C up to +130°C
Applications:
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IIR (Butyl-Rubber)
Properties:
Very good gas impermeability, resistance to ozone, aging and weathering, good electrical properties.
Resistance:
Above-average resistance to acids and alkalis, animal and vegetable oils and fats, salt solutions. Not resistant to mineral oils and greases, gasoline and aliphatic, aromatic and chlorinated hydrocarbons.
Temperature range:
-40°C up to +145°C
Applications:
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FEPM Aflas® (Tetrafluorethylen and Propylen)
Properties:
FEPM is a modified fluororubber, with very good resistance to a wide range of specific media and chemicals.
Resistance:
Exceptional resistance to mineral and silicone oils, hot water and steam (up to +170°C), phosphate esters, acids and bases and media containing amine-based additives and corrosion inhibitors.
Temperature range:
-10°C up to +200°C
Applications:
- Chemical Industry
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Metallic
MS (Brass)
(CuZn39Pb3)
Resistance:
Good resistance to weathering
Temperature range:
-20°C up to +250°C
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GG (Grey cast iron)
(0.6025)
Resistance:
High wear resistance, good corrosion resistance
Temperature range:
–20 °C up to +180 °C
Applications:
Stainless steel (1.4301)
(AISI 304 or V2A)
Austenitic Chrome-Nickel-Steel
Resistance:
Very corrosion resistant, stainless, good resistance to organic acids, salt solutions, alkaline solutions at moderate temperature.
Temperature range:
up to 600°C
Applications:
- Food industry
- Building industry
- Paper industry
- Chemical Industry
- Pharma industry
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Stainless steel (1.4571)
(AISI 316, A4)
Austenitic stainless steel
Resistance:
Very good corrosion resistance, acid resistant, stainless, anti-magnetic.
Temperature range::
up to 700°C
Applications:
- Food industry
- Chemical Industry
- Pharma industry
- cellulose production
- Plastics industry
- Textile industry
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Stainless steel (1.4828)
(AISI 309)
Austenitic chrome-nickel steel with added silicon
Resistance:
Moderate corrosion resistance, but in sulfurous atmosphere, stainless.
Temperature range::
up to 950°C
Applications:
- Building industry
- Chemical Industry
- Petro chemistry
- Cement industry
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The PAM inflatable sealing system
For the construction of hermetically sealed, gas- and pressure-tight
bulk material or process valves or intermittent sluice systems.
The functional principle
The inflatable Pressairmatic seal (PAM) is a U-profile open at the top into which a clamping ring with stud bolts is inserted. Clamping ring and seal are inserted together in a sealing groove and screwed into the housing with sealing nuts. The Pressairmatic seal is embedded in the seal groove and is protected on both sides by pre-wipers against damage during the opening and closing process, i.e. the seal does not come into contact with the product.
The inflation process is controlled by an electromechanical actuator.
When the gate reaches its closed end position, a pneumatic control system is actuated, which releases the compressed air for the inflatable seal with a time delay (approx. 1 sec.) via an intermediate time delay element. The seal is inflated and presses 100% onto the gates surface. The closing zone is now material, gas, vacuum and pressure tight in both directions, provided that the inflation pressure is higher than the internal pressure by at least 1.5 to 2 bar g.
Application area
- For liquid-, gas-, pressure- and vacuum-tight shut-off of the slide gate closing zone
- For material-tight shut-off of bulk materials and liquids, even at high switching frequencies
- In the temperature range up to 300°C
- In the pressure range up to 6 bar g
- In the vacuum range up to 10 mbar
Slide gate
As standard, we use stainless steels for our slide/swing gate and flap klaps. Due to their good corrosion resistance, they have proven themselves in most applications. For special requirements, such as poorly flowing or aggressive media, adaptation is possible by means of an appropriate coating or surface treatment.
Stainless steel
1.4301 (X5CrNi18-10)
(AISI 304 or V2A)
Austenitic Chrome-Nickel-Steel
Resistance:
Very corrosion resistant, stainless, good resistance to organic acids, salt solutions, alkaline solutions at moderate temperature.
Temperature range:
up to 600°C
Applications:
- Food industry
- Building industry
- Paper industry
- Chemical Industry
- Pharma industry
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1.4401 (X5CrNiMo17-12-2)
(AISI 316 oder V4A)
Austenitic Chrome-Nickel-Steel
Resistance:
Very good corrosion resistance, with moderate chloride content, stainless, antimagnetic.
Temperature range:
up to 600°C
Applications:
- Food industry
- Chemical Industry
- Cellulose industry
- Textile industry
- Building industry
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1.4541 (X6CrNiTi18-10)
(AISI 321)
Austenitic Chrome-Nickel-Stainless Steel, with Titanium addition
Resistance:
Very good corrosion resistance, even at low chlorine, nitric or hydrochloric acid concentrations.
Temperature range:
up to 900°C
Applications:
- Food industry
- Chemical Industry
- Pharma industry
- Building Industry
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1.4571 (X6CrNiMoTi17-12-2)
(AISI 316, A4)
Austenitic stainless steel
Resistance:
Very good corrosion resistance, acid resistant, stainless, anti-magnetic.
Temperature range::
up to 700°C
Applications:
- Food industry
- Chemical Industry
- Pharma industry
- cellulose production
- Plastics industry
- Textile industry
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0.9630 (G-X 320 CrNiSi 9-5-2)
High-alloy, wear-resistant cast steel (chilled cast iron)
Resistance:
Low resistance to corrosion.
Temperature range:
to 850°C
Applications:
In high quality machines wear assemblies
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Spare parts
Our extensive spare parts warehouse contains the spare parts for all components and systems supplied by Schütte Industrieservice and Edelhoff Polytechnik to our customers since 1964.
In addition, we can offer you our installation team on request. These qualified members of our team repair and maintain your equipment mechanically and electrically. Either on request or regularly as part of a concluded maintenance contract.
All values and properties specified here are to be understood as guide values. Each application is subject to different operational environmental influences and must therefore be taken into account when selecting materials. Resistances are influenced, for example, by excessive temperatures, high concentrations of the medium, mechanical stresses or extreme weather conditions. Therefore, we cannot give any guarantee for the stated values. Bitte beachten Sie, dass alle Elastomerteile eine begrenzte Lebensdauer haben und deshalb regelmäßig kontrolliert und ggf. ersetzt werden müssen.
