Airless gun nozzle set 621 – Professional nozzle for airless painting
Looking for a reliable, durable, and highly effective tip for your airless spray gun? The 621 Airless Spray Gun Tip Set (SKU: M80635-7) is a premium accessory designed for painters, tradesmen, and DIYers who want to achieve professional painting results. This set delivers exceptional precision, consistent paint application, and long life, saving you time and materials on every project.
The 621 nozzle is specially designed for applying various types of coatings to medium to large surfaces. Whether you are renovating residential premises, painting facades or applying protective oil coatings to industrial buildings, this nozzle set will ensure flawless application without dripping or overspray.
Thanks to the use of premium materials such as tungsten steel, this nozzle provides exceptional wear resistance, meaning it will maintain a perfect spray pattern even after hours of intensive use. Invest in quality equipment that will take your work to the next level.

Key benefits of using the 621 airless nozzle
When it comes to airless painting, choosing the right nozzle is crucial to the final appearance of the surface. The 621 airless gun nozzle set offers a number of advantages that will make your work easier:

Premium materials for maximum durability: The nozzle core is made of high-quality tungsten steel, which is extremely resistant to high pressure and abrasive particles in paints. This ensures an extremely long product life.
Excellent atomization (spraying): The nozzle allows for extremely fine paint dispersion, creating a completely smooth and even application without visible transitions or streaks.
Easy cleaning and anti-clogging function: The nozzle design allows for quick clearing of any blockages during operation. With a simple twist of the nozzle, you can clear particles that are obstructing the flow and continue working immediately.
Universal Compatibility: The nozzle is designed to fit most standard airless spray guns on the market, making it extremely versatile.
Easy to carry and install: The compact design allows for quick nozzle changes in the field without the need for complicated tools.


Technical features and product specifications
The 621 airless gun nozzle set is precisely designed for optimal performance under high pressure. The key technical features are listed below:

Model number: 621 (The number 6 represents a spray angle of 60 degrees, which determines the width of the jet; the number 21 represents the nozzle opening size - 0.021 inches, which determines the paint flow).
Material: High-quality tungsten steel and durable plastic.
Spray width: Wide spray pattern, ideal for quickly covering larger areas.
Compatibility: Suitable for most airless devices and guns on the market.
Color: Random color (depending on current stock).
Product code (SKU): M80635-7
Category: Spare parts and brushes


Versatile use on various projects
The 621 airless nozzle is extremely versatile due to its specifications and is suitable for a wide range of painting jobs. It works great on the following projects:

Residential buildings: Painting interior walls and ceilings in small, medium and large apartments and houses.
Commercial buildings: Fast and efficient application of paint to larger wall surfaces in offices, warehouses and shops.
Exterior surfaces: Application of facade paints and protective coatings to exterior walls.
Various materials: Ideal for applying latex paints (interior and exterior) and various oil paints and varnishes.


How does the 621 nozzle designation work?
When choosing airless spray nozzles, it is important to understand the meaning of the numbers. The first number (in this case 6) represents the spray angle. Multiply this number by 10 to get the spray angle in degrees (60°). The larger the angle, the wider the spray pattern on the surface. The second and third numbers (in this case 21) represent the nozzle opening size in thousandths of an inch (0.021"). The larger this number, the greater the paint flow or the thicker the medium you can spray through the nozzle. The 621 model is therefore ideal for working quickly with thicker paints on larger surfaces.
For a better idea of operation and installation, please also watch the video below, which shows the use of related airless accessories:


Frequently Asked Questions (FAQ)
1. What types of paints is the 621 nozzle suitable for?
The 621 airless nozzle is extremely versatile. Its larger orifice (0.021 inch) makes it ideal for applying thicker coatings such as interior and exterior latex paints, dispersion paints, as well as a variety of oil-based paints, varnishes and primers on larger surfaces.
2. Is this nozzle compatible with my airless gun?
Yes, the 621 airless gun nozzle set is designed to be compatible with most standard airless guns and systems from various brands on the market. You can check the dimensions of your nozzle holder before purchasing, but in most cases it will fit without a problem.
3. How do I properly clean and maintain the nozzle so it lasts as long as possible?
The nozzle has excellent anti-clogging cleaning properties. If it becomes clogged during use, simply turn it 180 degrees (in the opposite direction of the spray) and trigger the gun to allow the pressure to blow out the dirt. After use, rinse the nozzle thoroughly with a suitable cleaner (water for water-based paints or solvent for oil-based paints) and store in a dry place.


Responsible persons:
MAR-POL - MAR-POL SCIMPORT EXPORT M.ŚCIANA, K.ŚCIANA, 26-020 Chmielnik, Suchowola 6a, Poland, obsluga@mar-pol.sklep.pl, +48607865357
Distributor for Slovenia: Haloorodje.si, Online Sales, Rok Groznik sp, Podturn 42, 8350 Dolenjske Toplice, info@haloorodje.si, +38669731944, Slovenia
Product origin: China

Instructions for using the product:
• Relieve pressure in the airless system before installation.
• Remove the old nozzle and clean the gun tip.
• Place the new nozzle 621 correctly in the holder.
• Check that the nozzle is securely attached.
• Before starting work, test the jet on a less important area.
• Clean the gun and nozzle thoroughly after use.

Useful tips for work:
• Use the nozzle with paint or coating that is suitable for airless application.
• For even application, hold the gun perpendicular to the surface and move it evenly.
• Clean the nozzle regularly to prevent clogging.
• If the nozzle is worn or damaged, replace it.

Warnings:
• ⚠️ Always relieve pressure before cleaning or changing the nozzle.
• ⚠️ Never direct the jet towards people or animals.
• ⚠️ Do not put your hands or other body parts near the nozzle during operation.
• ⚠️ Use appropriate eye, skin and respiratory protection.
• ⚠️ Observe the maximum allowable pressure of the airless gun and nozzle.
• ⚠️ Keep out of reach of children.

Same summary

The 621 Airless Spray Gun Nozzle Set is designed for users who regularly maintain or upgrade their professional or home airless paint sprayers. The high-quality tungsten steel material is suitable for those who need a reliable consumable for precise application of paint or coating. Before choosing, it is important to check that the nozzle matches the exact model of your gun and the requirements of the material you will be applying. For more intensive use or frequent changes, good durability can be an advantage, while for occasional use, a more affordable solution is also suitable, if the dimensions and connection are appropriate.

Recommendation source: Enaa guides and team experiences.

User view

This type of nozzle set is most often used by home craftsmen, owners of small workshops and anyone who renovates or maintains various surfaces in or around the house. The practicality of a new or replaced nozzle is particularly evident in the even distribution of paint - without dripping or uneven application, which is essential for satisfactory results when painting walls, fences, facades or furniture.

Many users prefer Mar-Pol brand products, as they offer proven compatibility and often the ability to choose nozzles to fit many spray gun models.

Why buy at Enaa

On Enaa you can quickly compare different replacement nozzles by purpose and material, and you always have expert support available for real questions about compatibility or practical use. In addition, Enaa makes it easy and transparent to purchase the entire range of spare parts for your tool in one place.

Answers to frequently asked questions

How do I choose the right nozzle for my airless gun?

Before choosing, check the model number of your gun and compare the product's technical data - matching dimensions, connections, and materials is key to proper operation and safety of use.

Is the nozzle suitable for use with different types of paints or coatings?

It is possible to use with various coatings, but it is important that the nozzle type matches the required viscosity of the material; for thicker paints, choose a wider opening or a suitable nozzle according to the manufacturer's recommendations.

How often should the nozzle on an airless spray gun be replaced?

The frequency of replacement depends on the intensity of use, the type of paint and the material of the nozzle. Frequent and demanding use will cause the nozzle to wear out faster, so check the wear regularly for optimal results.

What should I do if the nozzle does not fit my tool?

If after installation you notice that the nozzle is not sealing or not effective, double check your gun model designation and the nozzle specifications. Incorrect selection may cause unstable operation or even damage to the gun.

Can I use the same nozzle on several different gun models?

The use of the same nozzle is possible if the connection, dimensions and pressure requirements or material type are consistent across all gun models you use. It is recommended to always check compatibility before use.

Description updated: April 2026