Working Principle：
In the pump two symmetrical working chamber each equipped with a diaphragm, the center link will be integrated into one. Compressed air from the pump inlet into the valve, through the valve body to introduce compressed air into one of the chamber to promote movement of the diaphragm chamber, while the other chamber gas emissions. Once the end of the stroke is reached, the gas distribution mechanism automatically introduces compressed air into the other working chamber to push the diaphragm in the opposite direction so that the two diaphragms move back and forth in unison. Feature：
Air-operated double diaphragm pump
With 1/2 inch inlet and outlet
1/4 Inch air inlet
3/32 Inch max diameter suspended solids
Good abrasion resistance
Chemical resistance and heat resistance
Serviceability and environmentally sound
Perfect for use with water
Ideal for use with low viscosity petroleum fluids
Solid construction
Two years warranty
Specifications：
Product: Diaphragm pump
Type: Double diaphragm
Operation Type: Air-operated
Model: QBY-15PP
Body Material: Polypropylene
Inlet Port: 1/2 inch (12.7 mm)
Outlet Port: 1/2 inch (12.7 mm)
Air Inlet Size: FNPT 1/4 inch (6.35 mm)
Max Flow Rate: 2 m3/h (13 GPM)
Suction: 0-5 m (0-16.4 ft)
Max Suspended Solids: 2.38 mm (3/32 inch)
Max Head: 69 m (226.4 ft)
Max PSI: 100 psi
Temp. Rating: -20℉ ~ 150 ℉
Self-Priming Dry: 3 m (10 ft)
Self-Priming Wet: 4.6 m (15 ft)
Valve Type: Ball
Ball Material: Santoprene(R)
Check Seat Material: Polypropylene
Manifold Connection: Multiport
Application: Industrial
Package Size: 31 x 27 x 21 cm (12.2 x 10.6 x 8.3 inch)
Gross Weight: 4.14 kg (9.13 lbs)
Package Content： 1 x Air-Operated Double Diaphragm Pump QBY-15PP 1 x Product Manual

Brand	SOFEDY
Colour	White
Material	Polypropylene (PP)
Product Dimensions	31L x 26.9W x 21H Centimeters
Power Source	[INFERRED] External Air Compressor
Item Weight	3.67 kg
Maximum Flow Rate	13 Gallons Per Minute
Maximum Lifting Height	69 Metres
Manufacturer	SOFEDY
UPC	745302824564
Model number	SR-001
Number of Memory Sticks	1
Item Weight	3 kg 670 g
Item model number	SR-001
Are batteries included?	No

SOFEDY Air Operated Double Diaphragm Pump 1/2" Inlet & Outlet Heavy Duty Waste Oil Transfe Pump QBK-15 for Diesel, Grease, Kerosen 13GPM

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