Elkhart Brass ELKHART PRESSURE-MATIC VALVES - Manual (Page 5)

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IV. Valve Care & Maintenance:
Pressure-Matic® valves require minimal maintenance, and can normally serve reliably for twenty years or longer
in fire protection systems. However, a routine inspection and testing program is essential for any fire protection
system to insure that it is in proper operating condition. NFPA 25, Standard for the Inspection, Testing and
Maintenance of Water-Based Fire Protection Systems should be consulted for a determination of required test
frequency and methods.
Below is a summary of the required frequency of inspections and testing for pressure reducing valves:
Valve Application Inspection Flow Test
sprinkler system pressure regulating
control valve
quarterly annually
hose connection and hose rack assembly
pressure regulating valve
quarterly 5-years
Flow test results should be compared to previous test results, and to system performance criteria. Because the
Pressure-Matics® are non-adjustable type valves, test results should not vary significantly from previous test
results unless the water supply or pump characteristics have changed, resulting in a higher or lower inlet pressure
to the Pressure-Matic® valve. If changes to the water supply result in unsatisfactory performance of the PRV, the
upper bonnet subassembly may be field replaced with a different type to achieve a different reduction ratio.
For information on bonnet subassembly replacement or on any repair parts, please contact:
Elkhart Brass Mfg Co
PO Box 1127
Elkhart, IN 46514
574-295-8330
NOTE: The outlet pressure shown on the following charts are subject to a tolerance of ±10%.