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   H42W,H42H立式止回閥

	 
                
	   
                H42W,H42H立式止回閥
                
	   
                本系列閥門正常處于關閉狀態，由于管線中進口端介質的壓力作用，而克服彈簧阻力使閥門開啟。當進口端介質壓力低于出口端時，彈簧將閥芯推向閥座而使閥門關閉，阻止介質逆流，故起止回作用。 
本閥門由于采用彈簧支撐閥芯，故采用立式安裝或臥式裝均可。 
                
	 
                		

                	
				
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