Resistance, Media and Diaphragms

Body composition:

The Lasso-Stop® check valves consist of a stainless steel cone, a chrome-nickel-steel-alloy.
For the use in aggressive media the metal parts are coated or made according to the client's requirements.

Media and Diaphragms:

Ethylene-propylene EPDM
For cold and warm water. Also for short periods with steam , for example, for the sterilization in the food industry.

• deionized, softened or radioactive water up to 176°F (80°C)
• seawater up to 104°F (40°C)
• warm water up to 248°F (120°C)
• chlorine and chlorinated water
• chlorinated brine
• water with hydrazine
• caustic soda hydrated up to max. 30%
• alcohol solution 40% from 14°F to 104°F (-10°C to 40°C)
• antifreeze (Aethylen-Glycol)
• nitrogen
• sulpfate of alumina solution
• phosporic acid
• ammonia
• hydrochloric acid up to 4%
• vinegar and cold acetic acid
• hydrogen peroxide
• ozone and ozonized water

Nitrile, NBR
For air and gas, oil-resistant.
Applications : petrochemical industry, antifreeze in solar energy collectors, pump station for heat exchanger.

• benzine and super benzine
• mineral oil up to 176°F (80°C)
• fuel
• lubricating oil
• spiritus
• propane, butane
• natural gas
• freon 11 and 12

Suitable for:

• concentrated sulfuric acid
• nitrone acid up to 140°F (60°C)
• toluol
• benzol
• xylol
• viscose solution