Page 1 - inside front cover

Valves
Dixon Powhatan 2007 1-1 1-800-355-1991
Factory Set Pressure Reducing (regulating) Brass Valves
18-457 / 18-458 / 18-459
• 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 & Appeals 97-74-SM
5. Approved by the City of Los Angeles and the City of San Francisco (ULC 2-1/2")
• True combination shut-off and pressure reducing valves. 1-1/2" size reduces inlet pressure of 300 psi (2069 kPa) or less to
working pressures of 10 through 175 psi (69- 1207 kPa). 2-1/2" 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
• Cast brass
Dixon
Part #
NAPRVG250-55
NAPRVG250-60
NAPRVG250-65
NAPRVG250-70
NAPRVG250-75
Inlet
Grooved
2½"
Powhatan
Part #
18-459-00024
18-459-00025
18-459-00026
18-459-00027
18-459-00028
Outlet
Grooved
2½"
The 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.
Dixon
Part #
NAPRAVF150-15
NAPRAVF150-20
NAPRAVF150-30
NAPRAVF150-25
NAPRAVF150-50
NAPRAVF250-75
NAPRAVF250-65
NAPRAVF250-60
NAPRAVF250-55
NAPRAVF250-70
NAPRAVF250-80
NAPRAVF250-85
Inlet
Female NPT
1½"
2½"
Powhatan
Part #
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
Outlet
Female NPT
1½"
2½"
Dixon
Part #
NAPRVF250-60
NAPRVF250-65
NAPRVF250-70
NAPRVF250-75
NAPRVF250-55
NAPRVF250-85
NAPRVF250-80
Inlet
Female NPT
2½"
Powhatan
Part #
18-459-00011
18-459-00012
18-459-00013
18-459-00014
18-459-00015
18-459-00016
18-459-00017
Outlet
Female NPT
2½"
Dixon
Part #
NAPRAV250F-55
NAPRAV250F-60
NAPRAV250F-65
NAPRAV250F-70
NAPRAV250F-75
NAPRAV250F-80
NAPRAV250F-90
Inlet
Female NPT
2½"
Powhatan
Part #
18-457-00076
18-457-00077
18-457-00078
18-457-00079
18-457-00080
18-457-00081
18-457-00083
Outlet
Male NH (NST)
2½"