Technical
Data
Approvals:
UL and C-UL Listed. FM Approved.
NYC under MEA 172-02-E (4 and 6
inch).
DryPipeValve:
The Model DPV-1 Dry Pipe Valves are
for vertical installations (flow going
up), and they are rated for use at a
maximum service pressure of 250 psi
(17,2 bar). The Valve dimensions are
shown in Figure 7.
Flanged connections are available
drilled per ANSI, ISO, AS, and JIS
specifications (Ref. Table A). The
grooved outlet connections, as appli-
cable, are cut in accordance with
standard groove specifications for
steel pipe. They are suitable for use
with grooved end pipe couplings that
are listed or approved for fire protec-
tion system service. Available combi-
nations of inlet and outlet connections
are detailed in the Ordering Procedure
section.
Threaded port connections of valves
having flanges drilled to ANSI, AS, or
JIS specifications are NPT threaded
per ANSI Standard B1.20.1. Threaded
port connections of valves having
flanges drilled to ISO are available
either threaded per ISO 7/1 or NPT
threaded per ANSI Standard B1.20.1.
Valves with NPT threaded ports will
readily accept the trim arrangements
detailed in Figures 4, 5, and 6.
Components of the DPV-1 Valves are
shown in Figure 1. The Body and
Handhole Cover are ductile iron. The
Handhole Cover Gasket is neoprene,
and the Clapper Facing is EPDM. The
Air/Water Seat Ring is brass, the Clap-
per is bronze or aluminum bronze, and
both the Clapper Retaining Plate and
Latch are bronze. The Hinge Pin is
aluminum bronze, and the fasteners
for the Handhole Cover are carbon
steel.
Valve Trim:
Installation dimensions are given in
Figure 7, and the Valve Trim is illus-
trated in Figures 4, 5, and6. TheValve
Trim forms a part of the laboratory
listings and approval of the DPV-1
Valve and is necessary for the proper
operation of the DPV-1 Valve. Each
package of trim includes the following
items:
•Water Supply Pressure Gauge
•System Air Pressure Gauge
•Air Supply Connections
•Main Drain Valve
•Low Body Drain Valve
•Alarm Test Valve
•Automatic Drain Valve
•Drip Funnel
•Connections For Optional Quick
Opening Device (Accelerator)
NOTE
When the system pressure is greater
than 175 psi (12,1 bar), provision is to
be made to replace the standard order
300 psi (20,7 bar) Water Pressure
gauge with a separately ordered 600
psi (41,4 bar) Water Pressure Gauge.
Air Supply:
TableBshows thesystem airpressure
requirementsas afunctionofthewater
supply pressure. The air (or nitrogen)
pressure in the sprinkler system is rec-
ommended to be automatically main-
tained by using one of the following
pressure maintenance devices, as ap-
propriate:
•Model AMD-1 Air Maintenance De-
vice (pressure reducing type).
•Model AMD-2 Air Maintenance De-
vice (compressor control type).
•Model AMD-3 Nitrogen Mainte-
nance Device (high pressure reduc-
ing type).
The Pressure Relief Valve provided
with the valve trim is factory set to
relieve at a pressure of approxi-
mately 45 psi (3,1 bar). If the normal
system air pressure is less than or
exceeds 40 psi (2,8 bar), then the
pressure Relief Valve must be reset to
relieve at a pressure that is in accord-
ance with the Authority Having Juris-
diction.
Quick Opening Device:
As an option, the Model DPV-1 Dry
Pipe Valve may be equipped with the
Model QRS Electronic Dry Pipe Valve
Accelerator (4 and 6 inch sizes) as
detailed in Technical Data Sheet
TFP1100 or the Model ACC-1 Me-
chanical Dry Pipe Valve Accelerator
(2-1/2, 3, 4, and 6 inch sizes) as de-
tailed in Technical Data Sheet
TFP1112.
TheQRSortheACC-1isusedtore-
duce the time to valve actuation fol-
lowing the operation of one or more
automatic sprinklers. In some cases
the use of a quick opening device such
astheQRSortheACC-1maybere-
quired to meet the requirements of the
National Fire Protection Association to
meet water delivery times.
Patents:
U.S.A. Patent No. 6,557,645
Page4of20 TFP1020
ANSI B16.1 AS 2129JIS B 2210
(Class 125) (Table E)(10K)
A
7.50
9.50
(190,5)
(241,3)
B
0.75
0.88
(19,0)
(22,2)
7.00
9.25
(178,0)
(235,0)
0.71
0.87
(18,0)
(22,0)
6.89
(175,0)
Flange Drilling Specification
Nominal Dimensions in Inches and (mm)
9.45
(240,0)
Valve
4 Inch
6 Inch
(DN100)
(DN150)
N
8
8
ISO 7005-2
(PN16)
7.09
9.45
(180,0)
(240,0)
ABN
8
8
ABN
8
8
ABN
8
8
Dim. Dim.
Nominal
Qty. Dim. Dim. Qty. Dim. Dim. Qty. Dim. Dim. Qty.
Same drilling as for BS 4504 Section 3.2 (PN16) and DIN 2532 (PN16). Dim. A
Bolt Circle
Diameter
Dim. B
Bolt Hole
Diameter
Qty. N
Number of
Bolt Holes
2
2
Size
Same drilling as for ANSI B16.5 (Class 150) and ANSI B16.42 (Class 150).
1
1
0.75
(19,0)
0.91
(23,0) 0.75
(19,0)
0.59
(15,0)
TABLE A
DIMENSIONAL SPECIFICATIONS
FOR SELECTION OF FLANGE DRILLING
