Specifications

18
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Model ZW109FP 300 lb class flange (1
1
/
2
” – 6”)
Model ZW109FPX 150 lb flange (1
1
/
2
” – 8”)
Model ZW109FPG Grooved connections (1
1
/
2
”, 2”, 2
1
/
2
”, 3”, 4", 6”, 8")
Model ZW109FPTH Threaded (1
1
/
2
” – 3” only)
For Additional Information, reference WK-ACV catalog or visit
our web site.
• 1
1
/
2
”, 2”, 2
1
/
2
”, 3”, 4”, 6”, 8”, 10"
• Pilot control system consists of a two-way, normally open, direct-acting,
adjustable spring-loaded diaphragm actuated pressure reducing pilot
• Inlet pressure 300 psi maximum (class 300 flange)(UL rating)
• Pilot control is field adjustable from 30 psi to 165 psi
• Corrosion-resistant seat and resilient, rectangular seat disk
• Globe or angle configurations available, (globe 1
1
/
2
” – 3” threaded
ends, 1
1
/
2
” – 6” flanged ends). (angle 1
1
/
2
” - 3” threaded ends, 2” – 6”
flanged ends)
• Epoxy coated ductile iron body with flow clean strainer (1
1
/
2
” – 3”) or
wye type strainer (4” – 10”)
Fire protection systems are required to have the pressure reduced to a value below 165 psi, There-
fore, the pressure within a fire protection system must be tightly controlled. The ZW109FP is designed
to handle this very application. The ZW109FP is a pilot operated pressure reducing valve made spe-
cifically for the demands of a fire protection system. Designed to hold downstream pressure constant,
regardless of flow rate or inlet pressure fluctuations, the ZW109FP will accept 300 psi on the inlet and
adjust from 30 to 165 psi on the outlet. The ZW109FP is furnished standard with 300# flanges, but
also available in grooved and 150# flange connections.
Underwriters Laboratories requires the installation of pressure
gauges upstream and downstream of the pressure reducing
valve. Also, a relief valve of not less than 1/2” in size must
be installed on the downstream side of the pressure control
valve. Adequate drainage for the relief valve discharge must
be provided.
UL INSTALLATION SPECIFICATIONS REQUIREMENTS
The valve is to be installed in accordance with the standard
for installation of sprinkler systems, NFPA 13. The valve is to
be inspected, tested and maintained in accordance with
the standard for the inspection, testing and maintenance of
water-based fire protection systems, NFPA 25.
OptionsTypical Installation
Fire Protection Pressure Reducing Valve – ZW109FP
Features Applications
Refer to Order Form on Web site
MODEL ZW109FP
PRESSURE
REDUCING VALVE
MODEL P4000
PRESSURE
RELIEF VALVE
MODEL ZW109FP
PRESSURE
REDUCING VALVE
MODEL P4000
PRESSURE
RELIEF VALVE
MAIN FIRE
HEADER
DISTRIBUTION TO EACH FLOOR
SIZE
DUCTILE IRON DUCTILE IRON DUCTILE IRON DUCTILE IRON DUCTILE IRON
150# FLANGE 300# FLANGE 300# THREADED GLOBE GROOVE ANGLE GROOVE
1-1/2" UL / ULC UL UL / ULC UL
2" UL / ULC UL / ULC UL / ULC UL UL
2-1/2" UL / ULC UL / ULC ULC UL
3" UL / ULC UL / ULC UL / ULC UL UL
4" UL / ULC UL / ULC UL UL
6" UL / ULC UL / ULC UL
8" UL / ULC UL / ULC UL
10" ULC ULC
Automatic Control Valves