SPECIFICATIONS
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Pressure rated up to 400 psi.
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Flow rated up to 500 GPM
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Open-Close indication from 2 view directions
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Pressure reduction can be field adjusted
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Pressure reduction adjustment can be easily determined by indication label
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Pressure reduction adjustment has tamper resistant feature
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Low-torque manual close handwheel
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Built-in automatic check valve
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Regulates pressure under both flow and no-flow conditions
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Tapped for pressure gauge on both inlet and outlet side of valve
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Optional integral supervisory switch (For Indoor Use Only)
INLET – OUTLET CONNECTIONS
VALVE MODEL
INLET THREAD
OUTLET THREAD
URFA-20-2.5 2-1/2"
FEMALE
NPT
2-1/2" FEMALE NPT
URFA-20S-2.5 2-1/2"
FEMALE NPT
2-1/2" FEMALE NPT
URFA-25-2.5
2-1/2" FEMALE NPT
2-1/2" MALE HOSE
APPLICATION
A. AUTOMATIC SPRINKLER SYSTEMS
The models URFA-20S-2.5 and URFA-20-2.5 valves are most commonly used in automatic
sprinkler systems as floor control valves in high-rise buildings where supply riser pressures
exceed 175 psi. The URFA valves are Listed by Underwriters Laboratories as “Special System
Water Control Valves – Pressure Reducing and Pressure Control Type (VLMT)”, and also
meet the listing requirements for indicating valves. Installation requirements for pressure
reducing valves in automatic sprinkler systems are given in Section 4-6.1.2 of NFPA 13,
Standard for the installation of Sprinkler Systems, 1999 Edition. When designing URFA
pressure reducing valves into a sprinkler system a maximum flow rate of 400 GPM should be
observed.
URFA Pressure Reducing Valves are also listed as checking devices, which eliminates the
need for a separate check valve. When sprinklers on a given floor are fed from dual risers, the
URFA valve acts as a check valve to prevent loss of sprinkler water supply in the event of one
riser sustaining damage.
Requirements for Alarm Attachments are given in Section 5-15.1.6 of NFPA 13, Standard for
the installation of Sprinkler Systems, 1999 Edition. An integral, listed supervisory alarm
switch is available on URFA pressure reducing valves as option number “01” when ordering.
