Cast steel flange hard seal gate valve Z41H-16/25C

Introduction to Z41H-16/25C Cast Steel Flange Hard Seal Gate Valve

The Z41H cast steel flange gate valve has a compact structure, reasonable design, good valve rigidity, smooth channel, and low flow resistance coefficient. The sealing surface is made of stainless steel and hard alloy, with a long service life. Adopting flexible graphite filler plate, reliable sealing, and easy and flexible operation. The driving methods include dynamic, electric, pneumatic, gear transmission, and structural forms; Elastic wedge single valve, rigid wedge single valve plate, and double gate plate types. It is widely used as the opening and closing device to connect or cut off the medium in the oil and steam pipelines of petrochemical industry, fossil-fuel power station, etc.

Characteristics of Z41H-16/25C Cast Steel Flange Hard Seal Gate Valve

1. The selection of materials is meticulous, in accordance with relevant standards, and the overall quality of the materials is high.

2. Reliable sealing, excellent performance, and beautiful appearance.

3. The sealing pair is advanced and reasonable, and the sealing surfaces of the gate and valve seat are made of Stellite cobalt based hard alloy with different hardness by surfacing welding. The sealing is reliable, high hardness, wear-resistant, high-temperature resistant, corrosion-resistant, scratch resistant, and has a long service life.

4. The valve stem has undergone tempering and surface nitriding treatment, providing good corrosion resistance, scratch resistance, and wear resistance.

5. Adopting a wedge type elastic gate structure, with thrust bearings installed on medium and large diameters, it has low friction and is equipped with an impact handwheel, making it easy to open and close.

6. Various piping flange standards and flange sealing surface forms can be adopted to meet various engineering needs and user requirements.

Structural Drawing of Z41H-16/25C Cast Steel Flange Hard Seal Gate Valve

Z41H-16/25C Cast Steel Flange Hard Seal Gate Valve Parts Materials

Shell material

Applicable medium

Applicable temperature

Carbon steel (C-type)

Water, steam, oil products

≤425

Chromium nickel titanium steel (P-type)

Nitric acid

≤200

Chromium nickel molybdenum titanium steel (R-type)

Acetic acid

≤200

Chromium molybdenum steel (Type I)

Water, steam, oil products

≤550

Performance parameters of Z41H-16/25C cast steel flange hard seal gate valve

Nominal pressure (MPa)

Test pressure (MPa)

housing

Sealing (liquid)

Sealing (gas)

Upper seal

1.6

2.4

1.76

0.6

1.76

2.5

3.8

2.75

0.6

2.75

4.0

6.0

4.4

0.6

4.4

6.4

9.6

7.04

0.6

7.04

10.0

15.0

11.0

0.6

11.0

16.0

24.0

17.6

0.6

17.6

Main connection dimensions of Z41H-16/25C cast steel flange hard seal gate valve:

size

DN

fifteen

twenty

twenty-five

thirty-two

forty

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

mm

one hundred and thirty

one hundred and fifty

one hundred and sixty

one hundred and eighty

two hundred

two hundred and fifty

two hundred and sixty-five

two hundred and eighty

three hundred

three hundred and twenty-five

three hundred and fifty

four hundred

four hundred and fifty

five hundred

five hundred and fifty

six hundred

six hundred and fifty

seven hundred

eight hundred

H

mm

one hundred and seventy-five

one hundred and eighty

two hundred and ten

two hundred and ten

three hundred and fifty

three hundred and fifty-eight

three hundred and seventy-three

four hundred and thirty-five

five hundred

six hundred and fourteen

six hundred and seventy-four

eight hundred and eighteen

one thousand two hundred and twenty-five

one thousand four hundred and fifteen

one thousand six hundred and thirty

one thousand seven hundred and eighty

two thousand and fifty

two thousand one hundred and eighty-one

two thousand five hundred and ninety-nine

W

mm

one hundred and eighty

one hundred and eighty

two hundred

two hundred

two hundred

two hundred and forty

two hundred and forty

two hundred and eighty

three hundred and twenty

three hundred and sixty

three hundred and sixty

four hundred

four hundred and fifty

five hundred

five hundred

six hundred

seven hundred and twenty

seven hundred and twenty

seven hundred and twenty