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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: techsvcs@vikingcorp.com
1. DESCRIPTION
Viking supervised Double-Interlocked Electric/Pneumatic Release Preaction Systems
utilize the Viking G-4000P Valve.
The small profile, lightweight, pilot operated Viking Model G-4000P 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
Preaction 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-4000P 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-4000P Valve: 31.2'
12" Section of Pipe: 1'
Water Supply Control Valve: 15'
Model G-4000P Valve C v Factor: 341
Valve Color: Black
Material Specifications:
Refer to Figure 11.
Ordering Information:
Available since 2009.
Part Number: Double Interlock Electric/Pneumatic Preaction System Riser Assembly (with
Control Valve and Pressure Switches): 15653-1 (Refer to Figure 8.)
Accessories:
(Refer to Figure 9.)
Drain Manifold: 15588
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-4000P Double Interlock Electric/Pneumatic Preaction System Riser Assembly.
Prior to G-4000P Valve maintenance, this section of pipe may be removed to provide clearance for lifting the cover from the
Form No. F_112008
18.10.25
TECHNICAL DATA
P65
4" MODEL G-4000P
DOUBLE INTERLOCK PREACTION
WITH ELECTRIC/PNEUMATIC RELEASE
Q= C v
Q = Flow
C v = Flow Factor (GPM/1 PSI ∆P)
∆P = Pressure Loss through Valve
S = Specific Gravity of Fluid
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.
Replaces Form No. F_112008 Rev May 28, 2013
(Added P65 Warning.)
Page 1 of 12
√
∆P
S
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Summary of Contents for Viking G-4000P
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Page 1: Technical Data
2. A 12” section of pipe is provided with the G-4000P Double Interlock Electric/Pneumatic Preaction System Riser Assembly. Prior to G-4000P Valve maintenance, this section of pipe may be removed to provide clearance for lifting the cover from the Form No. F_112008 18.10.25... - Page 2 4” MODEL G-4000P TECHNICAL DATA 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: techsvcs@vikingcorp.com Figure 1 - Air Supply Options Form No. F_112008...
- Page 3 (enclosure) with adequate heat around the G-4000P Valve and trim. Freezing temperatures will dam- age the G-4000P Valve. When corrosive atmospheres and/or contaminated water supplies are present, it is the owner’s responsibility to verify compatibility with the Model G-4000P Valve and associated equipment.
- Page 4 2. Automatic air supplies must be regulated, restricted, and from a continuous source. A Viking Air Maintenance Device should be installed on each system equipped with a tank mounted compressor, plant air or nitrogen. For compressors with a capacity less than 5.5 ft...
- Page 5 TECHNICAL DATA 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: techsvcs@vikingcorp.com Figure 5 - Trim Components 5. Drain all water from the Preaction System. If the system has operated, or if water has entered the system, allow enough time to completely drain the system.
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Page 6: Operation
The closed pneumatic actuator, and the normally closed solenoid valve prevent prime water from escap- ing the prime chamber of the G-4000P Valve. When prime water enters the prime chamber, the rolling diaphragm is pressurized, causing it to expand downward onto the water seat. - Page 7 With both the pneumatic actuator and solenoid valve open, prime water is drained from the prime chamber, causing the G-4000P Valve to open, filling the sprinkler piping with water. Water from the intermediate chamber of the G-4000P Valve pressurizes the sensing end of the PORV causing the PORV to open. The open PORV prevents water pressure from building in the prime chamber should the solenoid or pneumatic actuator close.
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Page 8: Maintenance
To Test Sprinkler System “Low Supervisory Air” Alarm: 1. To prevent operation of the G-4000P Valve and filling the system with water during the test, DO NOT operate the electric detection system during test. Consider closing the main water supply control valve. - Page 9 (4) toward the prime line and remove from the body. 2. Inspect and replace if necessary. 3. Inspect the seat. The seat should be clean and free of foreign material. If the seat is damaged, the G-4000P Valve must be replaced.
- Page 10 4” MODEL G-4000P TECHNICAL DATA 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: techsvcs@vikingcorp.com Part Number 15653-1: G-4000P Valve G-4000P Double Interlock, Electric/ Pneumatic Release Trim (Includes NC Solenoid &...
- Page 11 4” MODEL G-4000P TECHNICAL DATA 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: techsvcs@vikingcorp.com Figure 10 - Installation Dimensions Form No. F_112008 18.10.25...
- Page 12 Page 12 of 12 4” MODEL G-4000P TECHNICAL DATA 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: techsvcs@vikingcorp.com Figure 11 - Replacement Parts Item Part...