Pressure Reducing Vavles
It is easy to use, handy and wide choice under any circumstances with various types of models.
It is easy to install by diverse change on requests from the field such as union type and socket type which are convenient for plumbing work.
It can avoid malfunction from foreign object by installing internal screen.
It resolved disadvantage of assembled reducing valve by simplifying connection and separation of water angle valve and reducing valve and is easy to maintenance management.

  • PRV-102

    -

  • PRV-202

    Pressure Indicated Type

  • PRV-602

    -

  • PRV-702

    -
Dimension
Model SIZE L H1 H2 PT
PRV-102 15A 110 90 120 1/2
20A 110 90 120 3/4
PRV-202 15A 110 90 120 1/2
PRV-602 15A 135 90 120 1/2
PRV-702 15A 110 90 120 1/2
Specification
Model PRV-102 PRV-202 PRV-602 PRV-702
Applied Fluid Water
Applied Pressure MAX, 1MPa
Applied Temperature MAX. 80℃
Scope of Pressure Control 50~500 KPa
Minimum Operating Pressure Differential 50 KPa
Pressure Test 2MPa
Main
Material		 BODY CAST BRASS(NPB / DR)
COVER CAST BRASS
DIAPHRAGM E. P. D. M.
SEAT STS 304
SCREEN STS 304
Installation Method
Reducing valve should be installed after removing foreign object clearly from pipe.
It can be operated well with prevent turbulent phenomenon by place straight throat at front and backside of valve.
Manual shutoff valve should be installed in front of reducing valve for the emergency
Pressure Control Method
Pressure valve would be released with previously set of secondary spindle pressure as request of orderer so that it has no need to be set pressure particularly, but in case of adjust with necessary, secondary
pressure will be high with turning adjust volt (adjust handle) as clockwise rotation, and will be low with turning adjust volt (adjust handle) as counterclockwise rotation.
Fault Diagnosis and Treatment Method
Problem Cause Treatment method and measu
Low volume of water supply Strainer is plugged up Clean the strainer in pipe and valve
Disorder of pressure control of valve Readjust pressure
The secondary spindle
pressure is low		 The first spindle pressure is low The first spindle pressure should be higher than
the secondary spindle pressure
Disorder of control spring Replacement of spring after inspecting damage of spring
A fluid does nor flow Direction of the installation is wrong Tune direction of a fluid to direction of an arrow
Set pressure is low or control bolt get loose Readjust pressure
Rising of the secondary
spindle pressure		 Disorder of diaphragm Replacement after inspecting damage
Insertion of foreign object in Disc Seat Removal of foreign object in Disc Seat after inspection
Damage of Disc Seat Replacement of Disc Seat after inspection. For damage
Abrasion of O-Ring Replacement of O-ring after inspecting for
damage and abrasion
Leaking of Spring case Damage of diaphragm Replacement after inspection for damage
Damage of spring case Replacement after inspection for damage