2. It has two diaphragms, the compressed air come to the pump body to drive the pump in the constant action of sucking and releasing, so it can pump the liquids easily by this principle. Also it is very safe in dangerous environment since it has no electric motor. 3. QBY air operated double diaphragm pumps can not only transfer the flow liquid, but also can transfer some uneasy flowed medium, with the merits of self-priming pump, diving pump, shield pump, slurry pump and impurity pump etc.  Product details: Performance Data: Size (") Capactiy (m3/h) Head (m) Suction Head (m) Max Grain Dia. (mm) Air 5 2. It has two diaphragms, the compressed air come to the pump body to drive the pump in the constant action of sucking and releasing, so it can pump the liquids easily by this principle. Also it is very safe in dangerous environment since it has no electric motor. 3. QBY air operated double diaphragm pumps can not only transfer the flow liquid, but also can transfer some uneasy flowed medium, with the merits of self-priming pump, diving pump, shield pump, slurry pump and impurity pump etc.  Product details: Performance Data: Size (") Capactiy (m3/h) Head (m) Suction Head (m) Max Grain Dia. (mm) Air 5 Small Rivets,Open End Blind Rivets,Aluminum Blind Rivets,Aluminum Open End Blind Rivets Kunshan Donghui Hengye Precision Hardware Co., Ltd. , https://www.fastenerpart.com
Summarize:
1.QBY Air Operated (Pneumatic) Double Diaphragm Pump is a positive displacement pump, adopting compress air, smoke and industry exhaust gas as power source.
Working Principle:
Double Diaphragms, Pneumatic
Main applications: Â Â Â Â Â Â
Oil, Water, Chemical, etc.
Driver:
Air Operated
Max.permissible fluid temperature:
150°C(302°F)
Type of connection:
Flange, Thread, Quick coupled
Installation position:
Connect to compressor
Casing parts material:
C.I, S.S, PP, Aluminium, PVDF, PTFE linning
Maximum grain diameter:
10mm (3/8inch)
Maximum drive rating:Â
7kgf/cm2
Maximum caliber:Â Â
100mm(4inch)
Maximum discharge-side pressure:
6kgf/cm2
Maximum head:
50m(164ft)
Flow rate range: Â
0.8-30m3/h(3.5-132US.GPM)
Â
Model
Pressure (Kgf/cm2)
QBY-10
3/8"
0~0.8
0~60
1
7
QBY-15
1/2"
0~1
5
1
QBY-25
1"
0~2.4
7
2.5
QBY-40
1-1/2"
0~8
7
4.5
QBY-50
2"
0~12
7
8
QBY-65
2-1/2"
0~16
7
8
QBY-80
3"
0~24
7
10
QBY-100
4"
0~30
7
10
  
 Summarize:
1.QBY Air Operated (Pneumatic) Double Diaphragm Pump is a positive displacement pump, adopting compress air, smoke and industry exhaust gas as power source.
Working Principle:
Double Diaphragms, Pneumatic
Main applications: Â Â Â Â Â Â
Oil, Water, Chemical, etc.
Driver:
Air Operated
Max.permissible fluid temperature:
150°C(302°F)
Type of connection:
Flange, Thread, Quick coupled
Installation position:
Connect to compressor
Casing parts material:
C.I, S.S, PP, Aluminium, PVDF, PTFE linning
Maximum grain diameter:
10mm (3/8inch)
Maximum drive rating:Â
7kgf/cm2
Maximum caliber:Â Â
100mm(4inch)
Maximum discharge-side pressure:
6kgf/cm2
Maximum head:
50m(164ft)
Flow rate range: Â
0.8-30m3/h(3.5-132US.GPM)
Â
Model
Pressure (Kgf/cm2)
QBY-10
3/8"
0~0.8
0~60
1
7
QBY-15
1/2"
0~1
5
1
QBY-25
1"
0~2.4
7
2.5
QBY-40
1-1/2"
0~8
7
4.5
QBY-50
2"
0~12
7
8
QBY-65
2-1/2"
0~16
7
8
QBY-80
3"
0~24
7
10
QBY-100
4"
0~30
7
10
 Â
Â
Cast Iron, Aluminum, Stainless Steel, Plastic, Teflon Diaphragm Pump
Model NO.: QBY
Place of Origin: China
Brand Name: Yonjou
Model Number: Qby
Theory: Pneumatic
Structure: Diaphragm Pump
Usage: All Kinds Water Oil Chemicals
Standard or Nonstandard: Standard
Fuel: None
Pressure: High Pressure
Application: Metering
Trademark: YONJOU
Transport Package: Plywood Case
Specification: CE ISO9001
Origin: China
HS Code: 841311000
Model NO.: QBY
Place of Origin: China
Brand Name: Yonjou
Model Number: Qby
Theory: Pneumatic
Structure: Diaphragm Pump
Usage: All Kinds Water Oil Chemicals
Standard or Nonstandard: Standard
Fuel: None
Pressure: High Pressure
Application: Metering
Trademark: YONJOU
Transport Package: Plywood Case
Specification: CE ISO9001
Origin: China
HS Code: 841311000