DP-S Series 316 Stainless Steel Air Operated Diaphragm Pumps

DP-S-11 316 Stainless steel diaphragm pump

DP-S-21 Stainless steel 316 diaphragm pump

DP-S-26S Stainless steel diaphragm pump

DP-S Air Operated Double Diaphragm Pumps are ideal for general pump transfer, recirculation, dispensing, spraying, filling, rough metering dewatering, low shearing transfer, and fuel evacuation. Dry-running models are portable and designed to be intrinsically safe. Pumps resist overheating and are suitable for a wide variety of liquids, from acids, caustics, and solvents, to high-viscosity shear sensitive liquids including paints, inks, and adhesives. Also suitable for abrasives and slurries.

Model No. DP-S-11 DP-S-21 DP-S-26S
Fluid Input Size 1/2 inch 1/2 inch 3/4 inch
Max. Pressure 7bar 7bar 7bar
Fluid Input size 1/2″ NPT 1/2″ NPT 3/4″ NPT
Air Input size 1/4″ NPT 1/4″ NPT 1/4″ NPT
Starting pressure Planar Vlave:1.6bar
Low-presure Valve:0.5bar
Planar Vlave:1.6bar
Low-presure Valve:0.5bar
Planar Vlave:1.6bar
Low-presure Valve:0.5bar
Max. Prssage Amount 20L/min 42L/min 60L/min
Maximum Pump Speed 300cpm 400cpm 400cpm
Each Cycle Capacity 0.06L 0.15L 0.15L
Max. Air Consumption Capacity 150NL/Min 350NL/Min 380NL/Min
Particle Maximum Diamater φ2mm φ3mm φ3mm
Lift Range 6.4m(wet),3.7m(dry) 6.4m(wet),3.7m(dry) 6.4m(wet),3.7m(dry)
Net Weight 9.5KGS 9KGS 5KGS
Carton Box size(mm) 460*350*440 535*400*250 280*290*200
Liquid contact material SUS316/PTFE SUS316/PTFE SUS316/PTFE


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FAQ regarding our business

Q1: What's your MOQ minimum order quantity for formal order?

A: Our MOQ is 10-100 units depends on the model. For small pump or spray guns , the MOQ is 100. and for large capacity pump, the MOQ could be 10. We can accept 1 or 2 units for sample testing order.

Q2: What's your payment terms?

A: We could accept L/C, T/T and Paypal or Western Union, also accept the payment against B/L copy . We can offer credit payment term for our long year cooperated representatives.

Q3: What is the lead time?

A: Sample order: 3-5days, mass production 20-40 days for the formal order.

Q4: Can we put our logo on your products? Is there extra charge for it?

A: Yes, we accept the OEM order based on the order quantity. The color box package need extra cost for less container order.

Q5: What's your warranty?

A: our warranty is 12months limited warranty except the easily worn parts. and for the motor we offer 2 years warranty.

Q6. Which port do you ship your machines?

A: We ship from Ningbo port China. for the FOB price, we will bear the local freight charge and the forwarder fee / customs fee, and all the shipping cost / insurance cost / forwarder cost at destination port / import duty tax ... all will be beared by the buyer (or importer).

Q7. how can i buy your products?

A: if you're final user, please leave your mobile phone number to us, and we will ask our distributor / dealer to call you directly. if you want to be our distributor or representative, welcome to contact us by email or whatsapp. we can talk more details one by one, we're sure you would be satisfied with our quality / service and price.


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