Bulletin 254
May 2019
Page 4 of 7
www.reliablesprinkler.com
Model NS-Pak
Listings and Approvals
cULus Listed
Model NS-Pak Dimensions
Figure 3
Syetem Operation
High-pressure nitrogen contained in the cylinder(s) is
reduced by the adjustable regulator (included with NS-
Pak) to a recommended setting of 100 psi (6.9 bar). The
high-pressure regulator supplies a field adjustable System
Pressure Regulator in the NS-Pak controlling pressure
to the system. As the cylinder pressure depletes below
90 psi (6.2 bar), the Inlet Pressure Switch activates to
indicate low nitrogen pressure and notify the owner that
the nitrogen supply requires servicing. The field adjustable
System Pressure Switch switch is factory preset to signal
low system pressure at approximately 13 psi (0.9 bar).
Pressure Regulator
P/N 6999991570
