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Flange drilling

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FIRE FIGHTING  
Ductile iron  
Check Valves  
Energy-saving Silent Check Valve

YQH42AX- -16Q/25Q

PN class: PN 16/25

Material: Ductile iron

Nominal diameter： DN200-450

Wafer Type Silent Check Valve

YQH7B71XT-16Z

PN class: PN 16

Material: Ductile iron

Nominal diameter： DN50-250