D71X-16QB5 Manual Unscented Butterfly ValveDetailed product description：

The D71X-16QB5 manual untwisted butterfly valve is a centerline butterfly valve with a rubber seat material. It can be used as a regulating and shut-off device in all corrosive, non corrosive gas, liquid, semi fluid, and solid powder pipelines and containers in petroleum, chemical, hydropower, smelting, energy, food, medicine, textile, papermaking, urban water supply and drainage systems.

characteristic
1. Small and lightweight, easy to disassemble and repair, and can be installed in any position.
2. The structure is simple, compact, and can open and close quickly with a 90 degree rotation.
3. The switch torque is small, labor-saving and lightweight.
4. The flow characteristics tend towards a straight line, with good regulation performance.
5. The number of opening and closing tests can reach tens of thousands, with a long lifespan.
6. Achieve complete sealing and zero gas test leakage.
7. Pneumatic and electric devices can achieve remote centralized control.

D71X-16QB5 Manual Unscented Butterfly Valve Performance Range
Nominal diameter 50 (2 ") -1000 (40") 50 (2 ") -800 (32") mm (inch)
Nominal pressure 1.0 1.6 MPa
Test pressure shell 1.5 2.4
Sealing 1.1 1.76
Applicable temperature -15 to+120
Applicable media include fresh water, sewage, seawater, air, steam, food, medicine, various oils, and acids.

D71X-16QB5 manual unsold butterfly valve main component materials
Valve body gray cast iron ductile iron stainless steel carbon steel
Butterfly plate electroplating ductile iron stainless steel carbon steel aluminum bronze
Valve stem made of stainless steel and carbon steel
Lubricating bronze PTFE lining
Seat Nitrile Rubber (-15-+93 ℃) Natural Rubber (-20-+85 ℃) Fluororubber (-23-+150 ℃)
Ethylene propylene rubber (-40-+120 ℃) Fluorobutadiene rubber (-7-+93 ℃) Polytetrafluoroethylene (-10-+150 ℃)

External dimensions, connection dimensions, and weight of unsold butterfly valves:

Specification （DN）

inch （in）

Valve size (mm)

Weight （㎏）

A

B

C

￠D

D1

E

￠F

Flansch

G

H1

Z

twenty

3/4″

one hundred and four

thirty-three

one hundred and thirty-seven

￠60

￠27

thirty-three

￠60

F04

￠9.7×7

twenty-three

twenty-seven

zero point nine

twenty-five

1″

one hundred and four

thirty-three

one hundred and thirty-seven

￠60

￠27

thirty-three

￠60

F04

￠9.7×7

twenty-three

twenty-seven

zero point nine

thirty-two

11/4″

one hundred and four

fifty-three

one hundred and fifty-seven

￠75.5

￠39

thirty-three

￠63

F04

￠12.6×9.4

twenty-eight

thirty-eight

one point three

forty

11/2″

one hundred and thirteen

sixty-seven

one hundred and eighty

￠82

￠39

thirty-three

￠70

F04

￠12.6×9.4

twenty-eight

thirty-eight

one point eight

fifty

2″

one hundred and twenty-six

seventy-four

two hundred

￠96

￠55

forty-three

￠70

F04

￠12.6×9.4

thirty-two

fifty

two point four

sixty-five

21/2″

one hundred and thirty-four

eighty-six

two hundred and twenty

￠110

￠66.8

forty-six

￠70

F04

￠12.6×9.4

thirty-two

sixty-two

three point two

eighty

3″

one hundred and fifty-seven

one hundred and three

two hundred and sixty

￠130

￠79.5

forty-six

￠70

F05

￠12.6×9.4

thirty-four

seventy-five

four

one hundred

4″

one hundred and sixty-seven

one hundred and thirteen

two hundred and eighty

￠158

￠105

fifty-two

￠70

F05

￠12.6×9.4

thirty-four

one hundred

five point four

one hundred and twenty-five

5″

one hundred and eighty

one hundred and thirty-five

three hundred and fifteen

￠187

￠130

fifty-five

￠95

F05

￠16×13

thirty-six

one hundred and twenty-six

seven point five

one hundred and fifty

6″

two hundred and three

one hundred and forty-seven

three hundred and fifty

￠213

￠152

fifty-five

￠95

F07

￠16×13

thirty-six

one hundred and forty-eight

nine point three