●Dual Check Valve Construction and Function 
● Spring Loaded Disc 
● Retainless 
● Integral Seat 
For the Dual Check Valve produced by CEPAI, the valve seat is generally integrated or hard alloyed on the body before directly processing the valve seat. 

●Dual Check Valve Main Parts & Material List 
Body/Bonnet Cast:WCB,LCB,LCC,WC6,WC9,CF8,CF8M,CD4MCu,CE3MN,Cu5MCuC,CW6MC; 
Forged:A105N,LF2,F11,F22,F304,F316,F51,F53,F55,N08825,N06625; 
Disc WCB,LCB,LCC,WC6,WC9,CF8,CF8M,CD4MCu,CE3MN,Cu5MCuC,CW6MC; 
Pin F6,F304,F316,F51,F53,F55,N08825,N06625; 
Bolt/Nut B7/2H,B7M/2HM,B8M/8B,L7/4,L7M/4M; 

●Dual Check Valve 
Dual Check Valve produced by CEPAI is mainly used to block or connect the medium in the pipeline. Choose Dual Check Valve of different materials can be used for water, steam, oil, liquefied gas, natural gas, gas, nitric acid,carbamide and other medium.