Deluge valve priming pipe connection and check val
Deluge valve priming pipe connection and check val
(OP)
In the supply pipe of a deluge system there is a check valve upstream the OS&Y control valve, the priming line pipe is connected between the check and the OS&Y. See the photo attached.
Is it OK? Is it adressed in NFPA or FM a requirement on this?
Or does it has to be connected upstream the check valve?.
The other question is if this check valve is a requirement or if this can be removed.
Is it OK? Is it adressed in NFPA or FM a requirement on this?
Or does it has to be connected upstream the check valve?.
The other question is if this check valve is a requirement or if this can be removed.





RE: Deluge valve priming pipe connection and check val
The fdc is before the check valve right???
if so does not seem like the check valve is needed
would be nice to see more of the piping diagram
if the check valve is required than a valve has to be there so the check can be serviced.
RE: Deluge valve priming pipe connection and check val
If this is a diaphragm deluge valve, a check valve is required between the diaphragm chamber supply control valve and the diaphragm chamber automatic shutoff valve. The check valve I am speaking of ensures the air stay off (and the diaphragm stays open) when the valve operates.
RE: Deluge valve priming pipe connection and check val
RE: Deluge valve priming pipe connection and check val
RE: Deluge valve priming pipe connection and check val
I believe the valve Stookey refers to between the diaphragm chamber control valve and automatic shutoff valve is called a PORV or Pressure Operated Relief Valve. I do not see it in the picture. I would also like to see more of the piping detail.
RE: Deluge valve priming pipe connection and check val
The valve is a Viking model E (4") with their "conventional" trim. The check valve a NIBCO swing FM-UL.
In the photo you can see more details.
The check valve is needed for the fire dept.inlet conn.
I would´ve preferred to install the prime line before the check valve, but in site they saw it easier to use the existing NPT outlet of the valve. And they are asking if it is OK.
RE: Deluge valve priming pipe connection and check val
is it installed per manufacuter instructions???
RE: Deluge valve priming pipe connection and check val
htt
RE: Deluge valve priming pipe connection and check val
Regards
Dave
RE: Deluge valve priming pipe connection and check val
I noted that the trim of the valve had a little modification but the accessories are on the correct position and place.
So for your comments it looks that the priming line with respect to the check valve is OK. Thanks to all for your comments and links.