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Dixon Fire 2012
US: 877.712.6179 Canada: 800.786.9697
Brass Valves & Wyes
A
Brass
Valves
& Wyes
Factory Set Pressure Reducing (regulating) Brass Valves
18-457 / 18-458
•
Pressure Reducing (regulating) Valves are listed by:
1. Underwriters Laboratories for Automatic Sprinkler Systems as floor or zone control valves
2. Standpipe Systems, Class I, II and III
3. Automatic Check Valve for Dual Riser Systems
4. Approved by the New York City Board of Standards and Appeals, approval # MEA 54-07-E
5. Approved by the City of Los Angeles and the City of San Francisco (ULC 2½")
•
True combination shut-off and pressure reducing valves. 1½" size reduces inlet pressure of 300 PSI (2069 kPa) or less to
working pressures of
10
through
175 PSI
(69-1207 kPa). 2½" size reduces inlet pressures of 400 PSI (2758 kPa) or less to
desired working pressures from
20
through
175 PSI
(138-1207 kPa) under discharge or static conditions.
•
Female x female valves are furnished with OPEN / CLOSED Indicator Bonnet for rapid confirmation of the valves status in the
system.
•
factory valves are tamper resistant
•
material:
cast brass
female x male
18-457
female x female
18-458
E
B
A
C
D
Size
A
B
C
D
E
closed
E
open
1½"
2½"
2-7/32"
3-7/32"
4-5/32"
6-3/32"
3-7/8"
5-3/4"
3-3/4"
5-3/4"
9-25/64"
11-3/8"
8-53/64"
10-13/16"
Dimensions
Valves are available with a tamper proof switch as an accessory device to hasten valve operation while
monitoring its open condition. The complete switch, with bracket and housing, is available for field mounting.
Consult the factory for price and availability.
Inlet
Female NPT
Outlet
Male NH (NST)
Part #
Powhatan
Part #
Wt.
Lbs.
1½"
2½"
1½"
2½"
NAPRAV150F-15
NAPRAV150F-20
NAPRAV150F-25
NAPRAV150F-30
NAPRAV150F-35
NAPRAV150___*
NAPRAV250F-55
NAPRAV250F-60
NAPRAV250F-65
NAPRAV250F-70
NAPRAV250F-75
NAPRAV250F-80
NAPRAV250F-90
NAPRAV250___*
18-457-00034
18-457-00027
18-457-00029
18-457-00030
18-457-00010
---
18-457-00076
18-457-00077
18-457-00078
18-457-00079
18-457-00080
18-457-00081
18-457-00083
---
7
7
7
7
7
--
19
19
19
19
19
19
19
--
Inlet
Female NPT
Outlet
Female NPT
Part #
Powhatan
Part #
Wt.
Lbs.
1½"
2½"
1½"
2½"
NAPRAVF150-15
NAPRAVF150-20
NAPRAVF150-30
NAPRAVF150-25
NAPRAVF150-50
NAPRAVF250-75
NAPRAVF250-65
NAPRAVF250-60
NAPRAVF250-55
NAPRAVF250-70
NAPRAVF250-80
NAPRAVF250-85
18-458-00021
18-458-00022
18-458-00024
18-458-00025
18-458-00036
18-458-00040
18-458-00078
18-458-00087
18-458-00088
18-458-00092
18-458-00101
18-458-00102
7
7
7
7
7
19
19
19
19
19
19
19
* customer to specify thread