DP-K40 Low pressure double-membrane pump for fluid transfer


K40 low pressure fluid transfer pump

DP-K40/A20 air operated easy carry double diaphragm pump

This DP-K40 Low pressure double-membrane pump 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 fluid easily by the principle.


Features of DP-K40(A20) Low pressure double-membrane pump for fluid transfer:

1. New fluid transferring pump with high capacity, light weight and compact size.

2. High quality PTFE membrane in 142mm large diameter, generate bigger volume output, and  last longer lifetime without problem. The teflon material is imported from Japan, better quality than other suppliers.  and strong capability of anti-corrosive and anti-acid/bases.

3. Air valve with double spool.

4. High precision paint pressure regulator & output regulator. attached with pressure gage.

5. Low and high manifold with inner diameter enlarged easy for cleaning and inspection.

6. Could be used for paint, chemical, oil, fluid transfer etc.


K40B 2-diaphragm pump with fluid regulator

K40B  2-diaphragm pump with fluid regulator valve & pressure gague


Model number DP-K40/A20
Max deliver capacity 40L/min
Max air pressure 7bar
Liquid¬†inlet¬†and¬†outlet¬†size 1/2″¬†NPT
Air¬†inlet¬†and¬†outlet¬†size 1/4″¬†NPT
Diameter of diaphragm/membrane 142mm
Air consumption 350 L/min
Max grain diameter 3mm
Bare pump weight 4.2kgs


below is the repair kit (easily worn parts) for K40 pump machine

repair kit for double diaphragm pump

repair kit for the double diaphragm pump

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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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