OS&Y, FDC and PIV

A brief explanation of the Outside Screw/Stem and Yoke (OS&Y), Fire Department Connection (FDC) and the Post Indicator Valve (PIV).

[@Amnesty4Me]

I’ve been in fire alarm for about 3 years on the install now transitioning to service and inspections. The simple explanation on the sprinkler side really helped clear things up

[@S_W_I_F_F_T]

I'm doing a paper in college right now on fire protection, detection, and suppression systems and this just cleared up everything so thank you

[@Tyler-rs5xh]

Great stuff, thank you!

[@r.osborne6706]

Thank you.

[@marting.7564]

Excellent explanation. Thank you 👍🏽

[@r.osborne6706]

Thank you, it is for fire tech students so it is just the basics.

[@manueldelaherranjr7293]

@6:11 😂😂😂 Thank you for the informative video and the laugh.

[@r.osborne6706]

Sorry for the wind issues with sound.

[@Kevin-wj4ed]

Cold weather ever cause problems?

[@r.osborne6706]

Kevin, yes it does. In colder climates they are often covered with insulating blankets. I live and worked in an area that is warmer climate in SoCal, so rarely issues with winter weather unless at higher elevations. However, around 2003 we had a super cold winter and I was inspecting a Junior high that day and the back flow preventer/OS&Y had sprung a leak. But, it was quite humorous that the leak was a small spray and it was so cold it was making snow like a snow making machine and the students were throwing snowballs etc. Here is a website I found that talks about insulating blankets and other methods to protect equipment during cold weather. backflowdirect.com/blog/tips-to-prepare-your-backflow-preventer-for-cold-weather

[@justinbarrier3459]

Haha THEY BETTER NOT HAVE THE FIRE LINE TIED INTO THE DOMESTIC WATER "so you don't drink the disgusting sprinkler water " That fire line backflow (Wilkins) will not be domestic water .. thus again I'm proving myself right as the water in the fire line is black and disgusting thus a high hazard for protection of domestic water and double check backflows cannot protect high hazard. It would require a "RP" backflow for extra protection... and RPs aren't ever installed in just fire lines . Only double checks like that one

[@dannymoreno718]

Bro it’s only a supervisory they would never call the fire department for that. They will call the people on the call list that CENTRAL STATION has.

[@dcrock8978]

You need to rewatch the video BRO, he never said they’d call the fire department.

[@r.osborne6706]

Yup. That is right.