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Why do I get streaks or bands in my spray pattern

Why do I get streaks or bands in my spray pattern?

Answer: Streaks in the spray pattern, especially heavy bands at the outside edge, indicates low pressure at the tip. In order to correct the issue, turn up the pressure control knob until these bands are eliminated. If the sprayer is already at maximum, you may have to use a larger diameter hose or shorten the length of the hose to reduce the pressure drop. Also make sure that all paint filters in the system are clean.

Airless Paint Sprayers are rated for a maximum tip size. Using a tip that is larger than the maximum size or a tip that is worn larger will cause low pressure. The tip should also be the proper size for the type of material being sprayed. After extended use, spray tips will wear out, causing a poor spray pattern. You may have to replace the spray tip with a new one or less size to restore the proper spray pattern.


for our DP airless paint sprayers, we have 2 types pressure regulators

A. Mechanical pressure regulator

for this system, the pressure is controlled by the micro switch inside the regulating system.  This system could cause more pressure drop such as 30-40bar (for example from 150 – 190bar), it will get unsmooth finishing and looks not so professional.

so the painter has to spray slowly when the pressure get down. otherwise the final coating is not equal between the high pressure and low pressure.

we have another recommendation, chose a bigger tip size, to make sure the pressure gap is smaller. but this will make the motor on heavier duty job and it will short the lifetime of the motor.

B. Electronic pressure regulator

for this electronic system, the pressure is much more stable than above system.

we always recommend our clients to buy this electronic pressure regulator, because the pressure is only 10-20bar difference.

the final finish coating is very nice and smooth / equal. this will make sure the spraying finish is perfect


if you are small contractors or semi-pro painter, you can take the A. Mechanical system

if you’re professional builder / contractor / painter, electronic pressure regulator airless sprayer will be you 1st choice.


check the link below to get reference of our airless sprayers with both system



DP-6318 electrical airless paint sprayer 1000W 1.8L Per minDP-6318 Airless Sprayer with Mechanical regulator


DP63 high quality electric airless paint sprayersDP6321i/6325i electric airless paint sprayers 

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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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