For gypsum, mortar and putty spraying machines, the progressive cavity pump assembly composed of stator and rotor serves as the core conveying unit of the whole spraying machine, known as the heart of spraying pump. Many buyers overlook how stator and rotor affect machine stability when purchasing sprayer spare parts.

The rotor is a precisely machined metal spiral part, while the stator is lined with highly elastic wear-resistant rubber. Meshing with each other, they form continuous sealed cavities during rotation, steadily conveying high-viscosity materials such as mortar, gypsum and putty. It delivers stable output pressure with low pulsation to achieve uniform and delicate wall spraying results.

A well-manufactured stator-rotor set ensures consistent material feeding and reduces common failures including material interruption and pressure fluctuation. With years of machining experience, we tightly control rotor tolerance and stator rubber formula to guarantee fitting precision. Our spare parts fit most domestic and imported mortar spraying equipment.

Unstable output or pressure drop of your sprayer is usually caused by worn stator and rotor. Stocking qualified replacement parts in advance can greatly cut downtime loss on construction sites. Feel free to contact us for matching selection support.