TFP1020
Page 4 of 20
Technical Data
Approvals
UL and C-UL Listed
FM and NYC under MEA 172-02-E (4 and
6 inch).
Dry Pipe Valve
The TYCO 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 and
drilled per ANSI, ISO, AS, and JIS spec-
ifications (Ref. Table A). The grooved
outlet connections, as applicable, 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 protection system service. Avail-
able combinations of inlet and outlet
connections are detailed in the Order-
ing Procedure section. They are also
noted in the “Available End Connection
and Sizes” table located on Page 1.
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 Parts 2 and 3 of Figures 4,
5, and 6.
Components of the DPV-1 Valves 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 given in
Figure 7, and the Valve Trim and Pre-
Trimmed Valve Assemblies are illus-
trated in Figures 4, 5, and 6. The Valve
Trim and Pre-Trimmed Valve 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
and pre-trimmed includes the follow-
ing 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)
Also included in the Pre-Trimmed Valve
Assembly, which can be ordered sepa-
rately for the Valve Trim, includes the
following items:
• Model BFV-300 butterfly valve
• Figure 577 grooved coupling
• PS10-2 waterflow alarm switch
• PS40-2 low air pressure alarm switch
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
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
As an option, the Model DPV-1 Dry
Pipe Valve may be equipped with the
VIZOR Electronic Dry Pipe Valve Accel-
erator (4 and 6 inch sizes) as detailed
in Technical Data Sheet TFP1105 or
the Model ACC-1 Mechanical Dry Pipe
Valve Accelerator (2-1/2, 3, 4, and 6
inch sizes) as detailed in Technical Data
Sheet 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 Specification
Nominal Dimensions in Inches and (mm)
ANSI B16.1
1
(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 Inch
(DN100)
7.50
(190,5)
0.75
(19,0)
8
7.09
(180,0)
0.75
(19,0)
8
6.89
(175,0)
0.59
(15,0)
8
7.00
(178,0)
0.71
(18,0)
8
6 Inch
(DN150)
9.50
(241,3)
0.88
(22,2)
8
9.45
(240,0)
0.91
(23,0)
8
9.45
(240,0)
0.75
(19,0)
8
9.25
(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).
Dim. A
Bolt Circle
Diameter
Dim. B
Bolt Hole
Diameter
Qty. N
Number of
Bolt Holes
TABLE A
DIMENSIONAL SPECIFICATIONS
FOR SELECTION OF FLANGE DRILLING
