TFP1020
Page 4 of 20
ifications are NPT threaded per ANSI
Standard B1.20.1. Trim port connec-
tions 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 shown in Parts 2
and 3 of Figures 3, 4, and 5.
Model DPV-1 Valve assemblies are
shown in Figure 1. The Body and Hand-
hole Cover are ductile iron. The Hand-
hole Cover Gasket is neoprene, and
the Clapper Facing is EPDM. The Air/
Water Seat Ring is brass, the Clapper
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 Hand-
hole Cover are carbon steel.
Valve Trim
Installation dimensions are provided
in Figure 6, and Valve Trim and Pre-
Trimmed Valve Assemblies are shown
in Figures 3, 4, and 5.
The valve trim, ordered separately or as
a pre-trimmed valve assembly, forms
a part of the laboratory listings and
approvals of the DPV-1 Valve and is
necessary for the proper operation of
the DPV-1 Valve.
Trim packages or pre-trimmed valve
assemblies include the following
equipment:
• 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)
Pre-trimmed valve assemblies also
include the following equipment:
• Model BFV-300 butterfly valve
• Figure 577 grooved coupling
• PS10-2 waterflow alarm switch
• PS40-2 low air pressure alarm switch
Order the above equipment sepa-
rately when ordering trim packages
separately.
Note: When the system pressure is
greater than 175 psi (12,1 bar), provision
shall 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.
Weights
The following are the nominal weights
for Pre-Trimmed Valve Assemblies,
Semi-Assembled Trim, and DPV-1
Valves without trim.
Pre-Trimmed DPV-1 Valve
Assemblies:
2-1/2 in. (DN65) GxG ..............87 lb (40 kg)
3 in. (DN80) GxG.....................90 lb (42 kg)
4 in. (DN100) GxG................. 121 lb (56 kg)
4 in. (DN100) FxG..................135 lb (64 kg)
4 in. (DN100) FxF ..................145 lb (69 kg)
6 in. (DN150) GxG ................. 175 lb (81 kg)
6 in. (DN150) FxG ..................195 lb (90 kg)
6 in. (DN150) FxF...................208 lb (96 kg)
Standard Galvanized
Semi-Assembled DPV-1 Trim:
2-1/2 in. (DN65)........................23 lb (11 kg)
3 in. (DN80) ..............................23 lb (11 kg)
4 in. (DN100) ............................30 lb (14 kg)
6 in. (DN150) ............................30 lb (14 kg)
DPV-1 Valve (Without Trim):
2-1/2 in. (DN65) GxG ...............37 lb (17 kg)
3 in. (DN80) GxG...................... 38 lb(18 kg)
4 in. (DN100) GxG................... 57 lb (26 kg)
4 in. (DN100) FxG.................... 67 lb (31 kg)
4 in. (DN100) FxF .................... 77 lb (36 kg)
6 in. (DN150) GxG ................... 95 lb (44 kg)
6 in. (DN150) FxG.................. 108 lb (50 kg)
6 in.(DN150) FxF ................... 121 lb (56 kg)
Air Supply
Table B shows the system air pres-
sure requirements as a function of the
water supply pressure. The air (or nitro-
gen) pressure in the sprinkler system
is recommended to be automatically
maintained by using one of the follow-
ing pressure maintenance devices, as
appropriate:
• Model AMD-1 Air Maintenance
Device (pressure reducing type)
• Model AMD-2 Air Maintenance
Device (compressor control type)
• Model AMD-3 Nitrogen Maintenance
Device (high pressure reducing type)
The Pressure Relief Valve provided with
the valve trim is factory set to relieve
at a pressure of approximately 45 psi
(3,1 bar). If the normal system air pres-
sure 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 accordance with the authority
having jurisdiction.
Quick Opening Device
The Model DPV-1 Dry Pipe Valve may
optionally be equipped with an elec-
tronic or mechanical dry pipe valve
accelerator. Select the VIZOR Elec-
tronic Dry Pipe Valve Accelerator
(4 and 6 in. sizes only) as described
in Technical Data Sheet TFP1105, or
the Model ACC-1 Mechanical Dry Pipe
Valve Accelerator (2-1/2 through 6 in.
sizes) as described in Technical Data
She et TFP1112.
The VIZOR or the ACC-1 is used to
reduce 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 as the VIZOR or the ACC-1 may
be required to meet the requirements of
the National Fire Protection Association
to meet water delivery times.
Nominal
Valve
Size
Flange Drilling Specication
Nominal Dimensions in Inches and (mm)
AN SI B16.11
(Class 125)
ISO 7005-2
(PN16)2
JIS B 2210
(10K)
AS 2129
(Table E)
Dim.
A
Dim.
B
Qty.
N
Dim.
A
Dim.
B
Qty.
N
Dim.
A
Dim.
B
Qty.
N
Dim.
A
Dim.
B
Qty.
N
4 in.
(DN100)
7.50
(190,5)
0.75
(19,0) 87. 0 9
(180,0)
0.75
(19,0) 86.89
(175,0)
0.59
(15,0) 87. 0 0
(178,0)
0.71
(18,0) 8
6 in.
(DN150)
9.50
(241,3)
0.88
(22,2) 89.45
(240,0)
0.91
(23,0) 89.45
(240,0)
0.75
(19,0) 89.25
(235,0)
0.87
(22,0) 8
1. Drilling same as ANSI B16.5 (Class 150) and ANSI B16.42 (Class 150).
2. Drilling same as BS 4504 Section 3.2 (PN16) and DIN 2532 (PN16).
Diameter
Dim. B
Bolt Hole
Diameter
Qty. N
TABLE A
SELECTION OF FLANGE DRILLING SPECIFICATIONS
