HS11X Threaded anti fouling isolation valveDetailed product description：

The HS41X backflow preventer (anti fouling block valve) is designed to prevent serious pollution caused by backflow in the current water supply network; Our unit has introduced advanced foreign technology and independently developed products with reasonable structure, convenient use, strong sealing performance, durability, and beautiful appearance. Backflow preventer products are widely used in sectors such as power, metallurgy, petroleum, chemical, gas, urban construction, papermaking, textiles, pharmaceuticals, food, ships, water supply and drainage, energy, drilling, etc.

Main Technical Parameters of HS11X Threaded Anti fouling Block Valve
Nominal pressure: 1.0-2.5MPa
Nominal diameter: 50-800mm
Applicable medium: water
Applicable temperature: 0-80 ℃
Flange standard: GB/T 17241.6-1998 GB/T 9113.4-88
Test standard: GB/T 13927 API598

The main valve components of HS11X threaded anti fouling isolation valve are made of the following materials:

Part Name	Material
Valve body and valve cover	Cast iron, carbon steel, stainless steel
valve disc	Carbon steel, stainless steel, nitrile rubber
valve stem	Aluminum bronze, chromium stainless steel
Diaphragm	Nitrile rubber
Diaphragm pressure plate	Carbon steel, stainless steel
spring	stainless steel

Main external dimensions of HS11X threaded anti fouling isolation valve:

DN

fifty

sixty-five

eighty

one hundred

one hundred and twenty-five

one hundred and fifty

two hundred

two hundred and fifty

three hundred

three hundred and fifty

four hundred

four hundred and fifty

five hundred

six hundred

L

four hundred and fifty-eight

four hundred and eighty-two

five hundred and fifty-one

six hundred and fifty-three

seven hundred and thirty-five

seven hundred and ninety-three

one thousand and eight

one thousand one hundred and eighty-six

one thousand three hundred and forty

one thousand five hundred and five

one thousand six hundred and seventy

one thousand eight hundred and eighty-six

one thousand nine hundred and eighty-six

two thousand three hundred and eighteen

H

two hundred and ten

two hundred and thirty-five

two hundred and sixty-four

three hundred and eight

three hundred and fifty-six

four hundred

five hundred and three

five hundred and ninety-five

seven hundred and five

seven hundred and five

nine hundred and five

nine hundred and ten

nine hundred and twenty-one

one thousand and two hundred

Debugging steps
Before formally installing the backflow preventer, all pipelines should be thoroughly flushed to eliminate other unrelated troubles. After installation and initial use, in order to prevent damage to the O-ring displacement and internal components during violent movements, it is necessary to follow the following steps: close the outlet gate valve, slowly open the inlet gate valve, slowly fill the valve chamber with main water, open each test ball to remove the air in the valve chamber, and after the valve chamber is filled with water, slowly open the outlet gate valve to allow water to fill the entire pipeline