Need help identifying this device

[TimNY]

Can anybody tell me what this Zurn device is with the 3/4" nipple sticking up out of it:

Thanks,

Tim

 

[ICE]

It looks like a building sewer atmospheric pressure differential relief portal.

 

[TimNY]

I'm having trouble finding specs for it. ie how high is the relief pipe supposed to be.. tried googling for all sorts of zurn [backwater, atmospheric, etc] but can't find this. I haven't seen one before.

Thanks for the help ICE,

Tim

 

[TimNY]

Found it.. it's a Z1108 flow control device. They ship with indoor grease traps. Since we don't normally allow indoor grease traps, I hadn't seen one before.

The use of a flow control device (Z1108), furnished with allgrease interceptors, is an important factor in the operation of

the interceptor. The flow control device should be installed in

the waste line upstream of the grease interceptor. It should be

placed beyond the last connection from the fixture(s) and as

close as possible to the underside of the lowest fixture. When

two or more sinks or fixtures are combined and served by one

interceptor, a single flow control fitting can be used.

The flow control device must be properly vented to permit air

to mix with the fluid entering the interceptor. Air facilitates

separation and, more importantly, is necessary to maintain

the proper pressure, thus, the proper operating level within

the separation chamber.

Air intake for the flow control device may terminate under the

sink drain board, as high as possible, to prevent overflow or

terminate in a return bend at the same height outside of the

building. When a fixture is individually trapped and backvented,

air intake may intersect the vent stack. All installation

recommendations are subject to approval of code authority.

 

[ICE]

I'm having trouble finding specs for it. ie how high is the relief pipe supposed to be.. tried googling for all sorts of zurn [backwater, atmospheric, etc] but can't find this. I haven't seen one before.Thanks for the help ICE,

Tim

Any time Tim, any time.

 

[Moscow]

Just a thought I would make them run that to the outside because of the stink will will get from the grease trap will be awfull. I not sure if it is in the our state code or in the UPC that tells you that it has to run to the out side through a seperat vent.

Good Luck

Justin

 

[north star]

= =

You might install an air admittance valve on it,

if the AHJ approves it.

= =

 

[SCBO1]

ICE, Does that dancing pencil have any lead left? >

pc1

 

[chris kennedy]

we don't normally allow indoor grease traps

Why not? They are becoming increasing common down here.

 

[north star]

+ + +

"Why not?........They are becoming increasing common down here."

The people who service the indoor traps aren't typically as hygenic asdesired........Here, the servicers tend to spill grease wastes and not clean

up after themselves......The location of the indoor grease traps are also

problematic in that they are usually located in the Kitchen Areas, near

the food prep areas........When the servicers come to reclaim the grease

wastes, they [ sometimes ] interfere with the Kitchen operations.....Also,

indoor grease traps [ here ] aren't serviced too often, until the wastes

are oozing out from around the lid, or the drainline is completely

stopped up.

I vote for grease traps to be located outdoors!



+ + +

 

[chris kennedy]

Not to mention they don't fit under commercial dishwashers and create havoc with equipment lay-out.

But i am curious about the IPC issues with these. (to busy tonight to look that up)

 

[TimNY]

I don't profess to know the reason we don't allow them, but I suspect North Star is on the right track. The Sewers chapter of our local code is 30+ years old and it contains many interesting and [not my problem] things; among the stipulations is all grease traps must be outdoors.

I have been in close proximity when they pull the covers of an outdoor trap and the stench will knock you out. I couldn't imagine opening that inside a store.

The flow control was in a closed cabinet. I opened the cabinet door and stuck my head in there and didn't notice the slightest smell. It probably has to do with the type of establishment (ie if they were cooking burgers it would probably stink).

Thanks for the help and comments.

Tim