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Stop silent type AS54 - Non-Return Check Valves
FromLasso Technik AG
Check valves from the manufacturer up to 16 bar for liquid and gaseous media with rubber diaphragms made of EPDM, silicones, fluorosilicones, nitrile, NBR, fluorocarbon, Viton® and fluorosilicones.a
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Technical features of our check valves
Lasso Technik AG check valves are equipped with an elastomer diaphragm that prevents the back flow of liquid and gaseous fluids. The particularity of this membrane is its silent and gentle closing (without water hammer). The non-return valve provides a high and reliable diaphragm seal, even in the presence of granulated fluids (sandy water). In addition, our check valves act as a raw filter and protect pumps and systems. Our devices do not contain any mechanical or electronic moving parts likely to wear out, which guarantees a long service life.
Non-return valves in the food industry
Stop Silent® valves in the production lines with pasty media, Stop Silent® is characterized by its simple design. In particular compared to mechanical valves, the elastomer diaphragms do not stick and wear out. And this makes Stop Silent® reliable.
Non-return armatures in process engineering
In the process engineering production plants, StopSilent ensures the direction of rotation and makes it possible to mix dangerous media.
Further areas of application for our non-return valves
- Water treatment
- Petrochemical installations
- Chemical apparatus and plant construction
- Heating installations
- Sanitary facilities
- Groundwater pumps
- Fittings
- Compressed air systems
- Pneumatic systems
- Solar technology
- Cooling water systems
- Ventilation valves and systems
- Foot valves
- Water and flow meter
- Irrigation systems
- Air conditioning
- Washing machines
- Technik process
- Fire hydrants
Diaphragm materials of the non-return valves
Stop Silent check valves are equipped with a diaphragm made of materials that are defined according to its application.
- Silicone membrane check valves (VMQ) for drinking water and food industry can be used at air temperatures up to +210°C, and water temperatures up to +100°C with a cold resistance up to about -55°C / -60°C.
- Non-return valves with ethylene propylene diene (EPDM) rubber membranes for cold and hot water, also suitable for short periods under steam for food sterilization.
- Nitrile rubber diaphragm check valves (NBR) for use in the petrochemical industry, solar technology and thermal coupling pumping systems.
- Viton® fluorocarbon diaphragm check valves for applications in the chemical industry. Has good resistance to acids and excellent resistance to low and high temperatures from -20°C to +220°C.
- Fluorosilicone membrane check valves (FVMQ) have very high heat and cold resistance and excellent resistance to weathering, ageing and ozone.