TECHNICAL DATA
3” MODEL G-3000P
DOUBLE INTERLOCK PREACTION
WITH ELECTRIC/PNEUMATIC RELEASE
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: [email protected]
Page 1 of 12
Form No. F_011610 18.10.25 P65
1. DESCRIPTION
Viking supervised Double-Interlocked Electric/Pneumatic Release Preaction Systems
utilize the Viking G-3000P Valve.
The small profile, lightweight, pilot-operated Viking G-
3000P Valve comes complete as shown in Figure 8.
The system piping is pressurized with air
or nitrogen to serve both as a means of supervising the integrity of the piping network and as
one portion of the system release operation. This feature serves to prevent undetected leaks
on the system piping network. If the system piping or a sprinkler is damaged, the supervisory
pressure is reduced and a “low air” supervisory alarm is activated.
This pilot operated externally reset valve also includes an internal check diaphragm
which eliminates the need for a separate check valve being installed in the system riser.
Double interlocked electric/pneumatic release preaction systems require the use of one 24
VDC normally closed (NC) electric solenoid and one pneumatic actuator. The electric sole-
noid is connected to a compatible release control panel and compatible detection devices.
The pneumatic actuator is controlled by the air pressure that is contained within the sprinkler
system piping. In fire conditions, both the solenoid and a sprinkler must open in order for the
G-3000P Valve to operate. When both the solenoid and pneumatic actuator open, the prim-
ing water is relieved from the internal prime chamber assembly. The prime chamber assem-
bly collapses, and water passes through the G-3000P Valve and internal check diaphragm to
the system piping network. The entire sprinkler system fills with water.
Double interlock electric/pneumatic release preaction systems are commonly used in cold
storage applications and other areas where it is important to control accidental water dis-
charge due to inadvertent damage to the sprinkler piping.
2. LISTING AND APPROVALS
cULus Listed:
VLFT
FM Approved:
Refrigerated Area Sprinkler Systems
3. TECHNICAL DATA
Specifications:
Pressure Rating: 250 PSI (17.2 bar) Water Working Pressure
Factory Hydrostatically Tested to: 500 PSI (34.5 bar)
Friction Loss (Given in feet of Schedule 40 pipe based on Hazen & Williams formula C = 120):
Model G-3000P Valve: 17.3’
12” Section of Pipe: 1’
Water Supply Control Valve: 10’
Model G-3000P Valve Cv Factor: 225
Valve Color: Black
Material Specifications:
Refer to Figure 11.
Ordering Information:
Available since 2010.
Part Number: Double Interlock Electric/Pneumatic Preaction System Riser Assembly: 16191-1 (Refer to Figure 8)
Accessories:
(Refer to Figure 9.)
Drain Manifold: 16212
Model E-1 Accelerator: 08055
Model LD-1 Anti-Column Device: 14800
4. INSTALLATION:
A. General Installation Instructions
1. For proper operation and approval, the valve must be installed in the vertical position as trimmed from the factory. DO NOT
modify the factory assembled trim except as described in this technical data sheet.
2. A 12” section of pipe is provided with the G-3000P Double Interlock Electric/Pneumatic Preaction Riser Assembly. Prior to
valve maintenance, this section of pipe may be removed to provide clearance for lifting the cover from the body.
3. The G-3000P Valve must be installed in an area not subject to freezing temperatures or physical damage. If required, provide
Viking Technical Data may be found on
The Viking Corporation’s Web site at
http://www.vikinggroupinc.com.
The Web site may include a more recent
edition of this Technical Data Page.
Q = Cv
√
∆
P
S
Q = Flow
Cv = Flow Factor (GPM/1 PSI ∆P)
∆P = Pressure Loss through Valve
S = Specific Gravity of Fluid
Replaces Form No. F_011610 Rev January 6, 2012
(Added P65 Warning.)