Closed safety valve spring 
 Related models: A46Y, A46Y-25, A46Y-64 
 【Usage】 
 Closure of safety valve springs used in boilers, pressure vessels, pressure equipment as overpressure protection device. When the medium pressure in the protective equipment to tone value increase, the valve automatically opens, then the whole amount of emissions, in order to prevent the pressure continues to rise, it is set when the pressure dropped to another value, the valve automatically closes to prevent the media continue to leak. 
 【Features】 product structure 
 Spring loaded with the working process smooth and reliable; 
 Two-action motion, displacement, high efficiency; 
 Closed structure, no leakage emissions from the media, safe and reliable; 
 Hand-type zone plate may be manually adjust the pressure vessel; 
 Elastic soft seal structure, dedicated to liquefied petroleum gas, gas occasions, good sealing performance