Lasso Technik”s Stop-Silent check valve features a unique cone design that assures tight shutoff to prevent backflow of liquid or gaseous media. This design also eliminates water hammer and associated problems of noise and wear, resulting in quiet, noise-free operation and long service life. Offered with choice of several diaphragm materials and mounting styles to meet varying application requirements, the valve is suitable for use in a range of applications, including water distribution, water treatment, chemical production plants, petrochemical installations, and food processing. Other consumer and commercial applications include use in washing machines, pumps and compressors, air-conditioning units, and ventilation systems.
The valve’s service life is further extended with its simple construction of only two nonmoving components – a perforated stainless steel cone and diaphragm. With no moving mechanical parts to wear, such as springs, bearings, or counterweights typically found in other types of check valves, users can expect a maintenance-free service life of up to 10 years. The valve supports a temperature range of -20 C up to 180 C and an operating pressure of up to 232 PSI. The valve can handle fluids up to 10 feet per second and gases up to 50 feet per second and is suitable for use in water, oil, acids, and brines. Standard cones and valve sizes are available from one inch to eight inches with multicone valves in sizes from six inches to 24 inches. Diaphragm materials are available in EPDM, nitrile rubber, silicone, or fluorine rubber (e.g. Viton).