Description

PN*6 ~ PN**0 swing check valve is suitable for any pipeline in petroleum,chemical, pharmaceutical, chemical fertilizer, electric power industry, etc,whoseWorking pressure range from1.6 to *5 MPa, working temperature range of butterfly swing check valve from - *9 to + **0 ℃,and medium are varied like water, oil, steam, acid medium, etc.Performance Data of cast iron swing check valve

Design    Length    Flangesize    Pressuretemperature    Test inspect
GB/T****6          GB****1              
JB*9    GB***1         GB/T****7     
                
Design Pressure Unit: MPa

Pressure     1.6    2.5    4    6.4    *0    *6
Strength    2.4    3.8    6    9.6    *5    *4
Water seal    1.6    2.5    4    6.4    *0    *6
Air seal    0.**0.7
Components/Material/Function

Body Cover    Guide sleeve    Pin roll     Filler piece    Sealing facing    Applicabletemperature    Applicablemedium
QT**0    WCB    1Cr*3    Reinforced flexible graphite1Cr*3/Soft graphite, stainless steel/ Acid asbestos PTFE, grooved metal gasket    1CrSTLmaterialPTFE  nylon    ≦**0    Water.Steam.Oil
WCB                    ≦**5    
WC8    WC6                ≦**0    
WC9    WC9                ≦**0    
2GCr5Mo    2GCr5Mo                ≦**0    
ZG1Cr*8Ni9Ti    ZG1Cr*8Ni9Ti    1Cr*8Ni9Ti            ≦**0    Nitric acid acetic acid
ZG1C*8Ni*2Mo2Ti    ZG1C*8Ni*2Mo2Ti    1C*8Ni*2Mo2Ti            ≦**0    acetic acid