X450 Airless Spray Gun Trouble Shooting Guide

X450 airless spray gun

Max. pressure: 250bar/3600psi

Inlet connector: 1/4″NPSM, 1/4″PT, M16*1.5

Output connector: 11/16″, 7/8″

4-finger trigger

X450 airless spray gun 250bar

X450 airless spray gun 250bar


X450 Airless Spray Gun Trouble Shooting Guide as below:

Paint won’t shut off at tip of airless gun.

1. Seat in the spray gun dirty.

Solution: Trigger spray gun several times under pressure.

2. Needle stop nut too tight.

Solution: Loosen the stop-nut.

3. Worn valve assembly.

Solution: Replace valve assembly.


Airless gun won’t spray.

1. Trigger safety on.

Solution: Disengage trigger stop.

2. Inline filter clogged.

Solution: Clean or replace mesh filter.

3. airless spray gun tip clogged.

Solution: Increase pressure at pump.

4. No pressure at spray gun.

Solution: Check pump for proper operation.


Spray pattern has “tails” or fingering.

1. Pressure too low.

Solution: Increase pressure at pump.

2. Material too thick.

Solution: Thin per manufacturer’s recommendation.

3. Tip adjusted too wide.

Solution: Reduce pattern size / change smaller size.

4. Spray tip worn.

Solution: Install new tip


Distorted pattern.

1. Plugged or worn tip.

Solution: Clean or replace tip.


Spray pattern variations.

1. Spray tip worn beyond spray pressure capability.

Solution: Replace spray tip.

2. Check transducer for wear or damage.

Solution: Replace transducer.

3. Check pressure control for smooth operation.

Solution: Replace pressure control.


There is spitting from the spray gun

1. The fluid supply is low or empty

Solution: Refill the supply container

2. Air entrapped in the fluid pump of the hose.

Solution: Check for loose connections on the siphon assembly, tighten, then re-prime pump.


Or contact Dino-power directly, if any problems.

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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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