In polyurethane foam coating applications, equipment portability, stability, and application precision remain core concerns for contractors. The pneumatic polyurethane foam sprayer stands out as a practical choice for two-component polyurethane spraying due to its core advantages of being “economical, compact, and heating-free.” It is particularly suited for small-to-medium projects and mobile work scenarios.

As an economical pneumatic device, its core specifications precisely meet application demands: a single-group flow rate of 7.5L/min and a pressure exchange ratio of 65:1. Driven by compressed air at 0.3-0.6MPa, it delivers stable power output suitable for spraying both high-viscosity and low-viscosity liquid materials. With a 100mm stroke and a compact weight of just 54kg, its small footprint facilitates agile maneuvering in confined spaces and streamlines job site transitions. The fixed 1:1 mixing ratio eliminates the need for additional adjustments, ensuring precise proportioning for two-component materials and guaranteeing uniformity and stability in foam coatings.

A key highlight is its heating-free design. Utilizing pneumatic atomization technology, it achieves stable temperature control without external heating, ensuring coating quality. This eliminates heating equipment costs and energy consumption while preventing coating defects from uneven heating. It also significantly boosts efficiency—operate immediately upon startup without warm-up delays, making it ideal for low-temperature environments or emergency applications.

Regarding mixing methods, it supports both in-gun and external mixing modes to accommodate diverse application needs: In-gun mixing utilizes an integrated mixing system within the spray gun to uniformly blend A and B component liquids. This ensures mixing only occurs as material is dispensed, eliminating waste and reducing equipment failure rates caused by curing. External mixing enables rapid application of curing-type two-component liquids. The mixing ratio can be mechanically adjusted to flexibly accommodate different material requirements. Contractors simply select the appropriate gun based on the material and application scenario.

Leveraging these advantages, the system finds extensive application in building insulation, waterproofing/corrosion protection, and pipeline coating: - For building exterior insulation, it rapidly forms uniform foam layers without heating, enhancing thermal performance. - In pipeline corrosion protection, precisely mixed coatings effectively resist corrosion, extending pipeline lifespan. - For small-to-medium projects or mobile operations, its compact design and user-friendly operation significantly lower construction barriers and costs.