Lasso Technik

Lasso Technik announced the patented Stop-Silent Check Valve Series to the U.S. market. The Stop-Silent Check Valve features a unique cone design that assures tight shut-off to prevent backflow of liquid or gaseous media and 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 Stop-Silent Check Valve is reportedly suitable for use in a wide range of applications including water distribution, water treatment, chemical production plants, petrochemical installations and food processing.

The valve's service life is further extended with its simple construction of only two non-moving 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, customers can expect a maintenance-free service life of up to 10 years. Other outstanding characteristics include quality construction, low cracking pressure, low pressure drop, and ability to function simultaneously as a filter.

The corrosion-resistant valve features 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 1 in. to 8 in. with multicone valves in sizes from 6 in to 24 in. The Stop-Silent Valve series comes in several configurations to meet a variety of mounting requirements, allowing for easy installation into fittings, standard unions, or between flanges. Diaphragm materials are available in EPDM, nitrile rubber, silicone or fluorine Rubber (e.g. Viton).

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