A method of heating spray components with a spray proportioner unit may include flowing a spray component from a hopper through a preheater and heated hose. The spray component may be received at a receiving end of the heated hose at a first temperature and exit the heated hose at a delivery end at a second temperature. The spray component may be flowed through the heated hose at an operating pressure up to 2000 psi and at a rate up to 12 lb/minute. The second temperature may be at least 30 F., such as between 40 F. and 60 F., greater than the first temperature.

A nozzle assembly includes a mixing channel and an aerator. The mixing channel has upstream and downstream ends defining a flow direction through the mixing channel and includes a housing wall and a mixer. The housing wall defines a flow passage and includes an inlet portion and a tip orifice. The inlet portion disposed at the upstream end and configured to receive a first material and a second material. The tip orifice is disposed at the downstream end and is configured to emit a plural component material from the mixing channel. The mixer is disposed within the mixing channel and is configured to mix the first material and the second material into the plural component material. The aerator is configured to flow nucleation air to a location downstream of an upstream end of the mixer and into a flow of the plural component material.

A fluid delivery system includes a conduit. The conduit is configured to deliver a fluid. The conduit further includes a first electrically conductive element configured to deliver electricity through a length of the conduit. The fluid delivery system further includes master hub disposed on a fluid delivery device. The fluid delivery system also includes at least one slave hub disposed on the conduit and communicatively coupled to the master hub.

Exemplary embodiments of dispensers are disclosed herein. One exemplary dispenser is a soap or sanitizer dispenser. The dispenser includes a housing. A removable and replaceable concentrate container for holding concentrated soap or sanitizer is located within the housing. A concentrate pump is in fluid communication with the concentrate container. A diluent container for holding a liquid is also located within the housing and a diluent pump for pumping the diluent is also included. The dispenser includes a mixing chamber in fluid communication with the concentrate pump and the diluent pump. The dispenser includes an outlet. When concentrated soap or sanitizer is pumped from the concentrate container, it mixes with diluent pumped from the diluent container to form a diluted mixture. The diluted mixture is dispensed at the outlet of the dispenser.

A nozzle assembly includes a nozzle housing (86) defining an inner chamber (91) and a mixer (90) disposed within the inner chamber. The nozzle housing includes a nozzle housing and a nozzle orifice. The nozzle receive is configured to connect to a sprayer housing and to receive a first material, a second material, and air. The nozzle orifice is configured to spray a plural component material formed by a mixture of the first material and the second material. The mixer includes a shaft (92), an extension (94), an air channel, and inlet orifice formed in a first end of the shaft, and an outlet orifice formed between the air channel and a surface of the shaft. The extension defines a mixing channel extending between the shaft and the inner surface of the housing and the air channel is defined by an inner surface of the shaft and extends partially axially through the shaft.

A floor surface dispense rig is configured to mix multiple constituent materials together to form a plural component flooring material and is configured to output that plural component material onto a ground surface. The dispense rig includes multiple displacers that draw the individual constituent materials from material supplies and pump the constituent materials to a dispenser for emitting the resultant plural component material.