Technical data
TECHNICAL DATA
March 28, 2013
Dry 120a
DRY VALVE
MODEL F-1
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
The Viking Model F-1 Dry Pipe Valve is a latching differential valve used to separate the water
supply from the dry pipe sprinkler system. The valve combines a positive latching clapper and
air plate assembly with a differential air-to-water seat design. The latching clapper and air plate
assembly provides a positive mechanical seal for the air pressure in the dry pipe system. The
differential design allows an air supply of moderate pressure to control a higher water supply
pressure. When the air pressure in the dry pipe system is lowered sufciently to destroy the
pressure differential, the valve opens allowing water to enter the dry pipe system.
The valve is also designed to operate a water motor alarm and/or an electric pressure alarm
switch. The Viking Model D-2 or E-1 Accelerator can be used to speed the operation of the valve
on large capacity systems or where faster action is required.
2. LISTINGS AND APPROVALS
cULus Listed: VPZV
FM Approved: Dry Pipe Valves
NYC Department of Buildings: MEA 89-92-E, Vol. 22
LPCB Approved
CE Certied: Standard EN 12259-3, EC-certicate of conformity 0832-CPD-2011
VdS Approved: Certicate G4980057 - 3”, G4960044 - 4”, and G4960055 - 6”
3. TECHNICAL DATA
Specifications:
Rated to - 175 PSI (12.1 bar) Water Working Pressure.
Factory tested hydrostatically - 350 PSI (24.1 bar) with the clapper open.
Air pressure to water pressure area differential: Approximately 6 to 1.
Color - Red
Form No. F_070392
DESCRIPTION
NOMINAL
SIZE
PART
NO.
FRICTION
LOSS*
C
v
FACTOR
SHIPPING
WEIGHT
Flange / Flange
Flange Drilling
ANSI 3" 09441
3 ft.
(0.91 m)
800
130 lbs.
(59 kg)
ANSI 4" 07628
5 ft.
(1.52 m)
821
130 lbs.
(59 kg)
ANSI 6" 08464
49 ft.
(14.9 m)
780
197 lbs.
(89 kg)
PN10/16 DN80 09969
3 ft.
(0.91 m)
800
130 lbs.
(59 kg)
PN10/16 DN100 08841
5 ft.
(1.52 m)
821
130 lbs.
(59 kg)
PN10/16 DN150 08464
49 ft.
(14.9 m)
780
197 lbs.
(89 kg)
* Expressed in equivalent length of Schedule 40 pipe based on Hazen & Williams
formula: C = 120.
Table 1
DESCRIPTION
NOMINAL
SIZE
PART
NO.
FRICTION
LOSS*
C
v
FACTOR
SHIPPING
WEIGHT
Flange / Groove
Flange Drilling / Pipe O.D.
ANSI / 89 mm 3" 09446
3 ft.
(0.91 m)
800
125 lbs.
(57 kg)
ANSI / 114 mm 4" 07627
5 ft.
(1.52 m)
821
125 lbs.
(57 kg)
ANSI / 165 mm 6" 12654
49 ft.
(14.9 m)
780
184 lbs.
(84 kg)
ANSI / 168 mm 6" 08491
49 ft.
(14.9 m)
780
184 lbs.
(84 kg)
PN10/16 / 89 mm DN80 09970
3 ft.
(0.91 m)
800
125 lbs.
(57 kg)
PN10/16 / 114 mm DN100 09538
5 ft.
(1.52 m)
821
125 lbs.
(57 kg)
PN10/16 / 165 mm DN150 12653
49 ft.
(14.9 m)
780
184 lbs.
(84 kg)
PN10/16 / 168 mm DN150 08491
49 ft.
(14.9 m)
780
184 lbs.
(84 kg)
* Expressed in equivalent length of Schedule 40 pipe based on Hazen & Williams
formula: C = 120.
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= C
v
√
∆P
S
Q = Flow
C
v
= Flow Factor (GPM/1 PSI ∆P)
∆P = Pressure Loss through Valve
S = Specic Gravity of Fluid
Revised page replaces page 120a-k, dated February 25, 2011.
(Added VdS approvals)