Steam Chewing Gum Removal 200F vs 250F
I apologize for not being able to display 100% the superior effectiveness of 250F because of my attempts to juggle video recording and operating the lance simultaneously.I believe that if I focused on the lance operation only I could have removed the pieces faster. Machine specs: 30HP Kohler, Pump TSF2021, pump tachometered at 1640 rpm when under load, YG trapped pressure unloader Green spring, pump produces 8 gpm, 20"coil 4 pancakes (don't remember how many feet of ½" coil) burning up to 4 gph diesel (3.5 B fuel nozzle, 140 psi) To elevate the temp to 250 F installed a 15045 nozzle, operating pressure 3200psi Things observed: The hose end connected to the trigger and lance, felt lighter as the water temperature passed 200 degrees F, the shape of the water stream at up to 180Fto 190F was wedge like and consistent with the shape of the stream at ambient temperatures, from above 195 the sound and pattern of the stream changed, louder and less blade like, to more of a conical shape. I believe working pressure had and influence on the stream as well, I think if the pressure was lower at the 250F it would have less of conical change. A 3200 psi working pressure is 400 psi lower than the manufacturer recommended 3600 psi of the TSF2021, but as you can see at the end of the video, the significant increase in pressure when the trigger is released, this is a result of the trapped pressure unloader , a higher operating pressure would mean an even higher "spike pressure" which would be well above manufacturer operating pressure of the TSF2021.
I apologize for not being able to display 100% the superior effectiveness of 250F because of my attempts to juggle video recording and operating the lance simultaneously.I believe that if I focused on the lance operation only I could have removed the pieces faster. Machine specs: 30HP Kohler, Pump TSF2021, pump tachometered at 1640 rpm when under load, YG trapped pressure unloader Green spring, pump produces 8 gpm, 20"coil 4 pancakes (don't remember how many feet of ½" coil) burning up to 4 gph diesel (3.5 B fuel nozzle, 140 psi) To elevate the temp to 250 F installed a 15045 nozzle, operating pressure 3200psi Things observed: The hose end connected to the trigger and lance, felt lighter as the water temperature passed 200 degrees F, the shape of the water stream at up to 180Fto 190F was wedge like and consistent with the shape of the stream at ambient temperatures, from above 195 the sound and pattern of the stream changed, louder and less blade like, to more of a conical shape. I believe working pressure had and influence on the stream as well, I think if the pressure was lower at the 250F it would have less of conical change. A 3200 psi working pressure is 400 psi lower than the manufacturer recommended 3600 psi of the TSF2021, but as you can see at the end of the video, the significant increase in pressure when the trigger is released, this is a result of the trapped pressure unloader , a higher operating pressure would mean an even higher "spike pressure" which would be well above manufacturer operating pressure of the TSF2021.