In the industrial field, whether the hose selection for a hose pump is compatible with the medium directly affects the stability and safety of the entire production process. The physical and chemical properties of different media vary greatly, and the requirements for the hose are also different. So, how to choose the appropriate hose based on the medium characteristics?
I. Core Principles of Hose Selection
Medium Compatibility First: Verify through material compatibility tests.
Life Cycle Cost Calculation: Choose the most cost-effective solution by considering the medium's corrosiveness, abrasiveness, and pumping frequency.
II. Suitable Environments and Media for Various Hoses
NR (Natural Rubber)
Temperature: -20°C ~ +80°C, Max Pressure: 16 bar
Applicable Media: Low-aggression chemicals, highly abrasive media, inorganic media (e.g., 30% sodium hydroxide, ammonia water, 40% ferric chloride, seawater, polyaluminum chloride PAC)
NBR (Nitrile Butadiene Rubber)
Temperature: -20°C ~ +80°C, Max Pressure: 16 bar
Applicable Media: Oily organic media (e.g., waste oil, etc.)
EPDM (Ethylene Propylene Diene Monomer)
Temperature: -20°C ~ +80°C, Max Pressure: 16 bar
Applicable Media: Corrosive, diffusible chemicals, inorganic media (e.g., 30% hydrochloric acid, 30% sodium hydroxide, organic sulfur, coagulant aids, flocculants ~ polyacrylamide PAM, etc.)
CSM (Chlorosulfonated Polyethylene Rubber)
Temperature: +5°C ~ +85°C, Max Pressure: 16 bar
Applicable Media: Highly corrosive media (e.g., oxidants, etc.)
TYG (Tygon/Tygothane - assuming brand name)
Temperature: +5°C ~ +85°C, Max Pressure: 4 bar
Applicable Media: Sodium hypochlorite and concentrated sulfuric acid
III. Common Applicable Media for Hose Pumps
Slurries containing sand or metal particles
Cobalt, nickel slurry, leachate, high specific gravity gold/platinum slurry
Lime milk, polyelectrolytes, caustic soda, slurry suspension, ferric chloride, iron sulfate
Plastic pigments, acids, solvents, polyester mixtures, detergents
Toothpaste, shampoo, soap, face cream
Bleach, dyes, suspended solids
Adhesives, dyes, colorants, fungicides
Paints, pigments for tiles and bricks, concrete additives, pastes, screen printing enamels, dyes, latex
Distilled water, acids
Beer yeast, edible oils and fats, natural flavors, chocolate, ice cream, dietary food, milk, yogurt.
Different media have different requirements for hoses. Media that are corrosive, contain solids, or have high temperatures all require targeted hose selection solutions.
