All stainless steel body and guide piping fittings
Sensitive and precise pressure control
Small volume and light weight
Easy regulation and maintenance
Excellent sealing performance
Built-in strainer, to prevent the guide piping system from being blocked
If the optional check feature is selected, back pressure is generated, and the return fluid will enter the air chamber to close the valve to prevent the fluid from back flow.
Body/Bonnet: Stainless Steel
Disc & Stem: Stainless Steel
Piping: Stainless Steel
Diaphragm: EPDM
Fasteners and Springs: Stainless Steel
175PSI/235PSI/350PSI
10Bar/16Bar/25Bar
ANSI / BSEN / ISO / DIN
0°C~100°C normal temperature water
Pressure Regulating Range: 0.1~5 kgf/cm², 5~9 kgf/cm², 7~17 kgf/cm²
Pressure Regulator Material: Bronze/Stainless Steel
Valve figure number/size/pressure grade/connecting end type/pressure regulating range/other optional accessories
Note: In valve installation, it is strongly suggested that sufficient space should be left for easy maintenance in the future. A strainer shall be mounted in front of the valve to prevent foreign matters from blocking the valve.
① Strainer (Built-In)
② Ball Valve
③ Needle Type Regulating Valve
④ Ball Valve
⑤ Pressure Reducing Valve
⑥ Ball Valve
⑦ Body
If flow demand varies in a large range, multiple PR300S pressure reducing valves should be used in parallel. In case of large flow demand, two pressure reducing valves will work simultaneously. In case of small flow demand, the large-sized valve will automatically close, while the small-sized valve will continue to provide the required flow. When setting the pressure regulating range for the valves, the set pressure of the small-sized valve should be about 0.3 kgf/cm² higher than that of the large-sized valve.
If the pressure reduction range is large, multiple PR300S pressure reducing valves should be used in series for sectional pressure reduction.
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