SV-type SL-type 
 1, built-in bypass valve - no need to install the bypass valve; 
 2, durable; 
 3, easy-to-replace components that trap; 
 4, built-in filter 1, small size; 
 2, the ultra-miniature disc trap; 
 3, can be installed anywhere; 
 4, low price 
 Applies to: washing machines, dyeing machines for the food industry: a variety of instruments with hot steam iron and pipeline