HDH47X butterfly buffer check valveDetailed product description：

Main technical parameters of HDH47X butterfly buffer check valve

Nominal pressure: 1.0-2.5MPa
Nominal meridian: 40-1400mm
Applicable media: water, oil, sewage, seawater
Applicable temperature: 0-80 ℃ (up to 200 ℃ if needed)
Flange standard: GB/T 17241.6 GB/T 9113
Test standard: GB/T 13927 AP1598

3、 Main component materials

Part Name	valve body	butterfly valve disc	valve stem	filler	Seal ring
Material	Grey cast iron, cast steel	Grey cast iron, cast steel, ductile iron	stainless steel	Polytetrafluoroethylene	Nitrile rubber

4、 Main external connection dimensions

DN（mm)

two hundred

two hundred and fifty

three hundred

three hundred and fifty

four hundred

four hundred and fifty

five hundred

six hundred

seven hundred

eight hundred

nine hundred

one thousand

one thousand and two hundred

one thousand and four hundred

L

two hundred and thirty

two hundred and fifty

two hundred and seventy

two hundred and ninety

three hundred and ten

three hundred and thirty

three hundred and fifty

three hundred and ninety

four hundred and thirty

four hundred and seventy

five hundred and ten

five hundred and fifty

six hundred and thirty

seven hundred and ten

H

five hundred and fifty

six hundred and thirty

six hundred and ninety

seven hundred and eighty

eight hundred and sixty

nine hundred and ten

nine hundred and eighty

one thousand and seventy

one thousand two hundred and twenty

one thousand three hundred and twenty

one thousand four hundred and thirty

one thousand five hundred and fifty

one thousand and eight hundred

one thousand nine hundred and eighty

B1

five hundred and forty

six hundred

six hundred and fifty

seven hundred and ten

seven hundred and seventy

eight hundred and thirty

nine hundred

one thousand and ninety

one thousand and two hundred

one thousand three hundred and twenty

one thousand four hundred and twenty

one thousand five hundred and fifty

one thousand seven hundred and eighty

two thousand