On sprinklers:
SSU = sprinkler spray upright
SSP = sprinkler spray pendent
SSH = sprinkler spray horizontal sidewall
SSV = sprinkler spray vertical sidewall
It has to do with their orientation.
When they have paint on their arms or have a glass bulb:
No paint or red bulb = standard temperature range, specifically the solder link are 165º and the red glass bulb are 155º.
White paint or green bulb = intermediate temperature range, specifically the solder link are 212º and the green glass bulb are 200º.
Blue paint or blue bulb = high temperature range, specifically the solder link are 286º and the blue glass bulb are 286º
Those are 95% of the sprinklers out there, there are a few special higher and lower temps, but they are rarely used.
Head boxes are found on old jobs, when we retrofit buildings sometimes I swap out the boxes for new. They need to fit the new heads.
Im currently retrofitting several old buildings for schools. One of them was former AT&T. Basement had a preaction system that had a 1 hp General Air Compressor in it. I was walking it with my project manager, less than a year out if engineering school. I asked him if he had a good air compressor yet. He said "No, I have just started to get tools. My dad and uncle let me use theirs." I really liked his answer and offered him the compressor. Johnny, my foreman on the job, took it out 2 weeeks ago and we loaded it on his truck.
Good equipment on sprinkler systems. That compressor will last his life if he checks the oil and drains the condensate.
Chilly
