Pressure Reducing Valve for Water

Pressure Reducing Valve for Water

RD-45 Pressure Reducing Valve with Stop Valve for water

RD-45SN type M

RD-45SN type M
Model RD-45SN 
type L
RD-45SN 
type M
RD-45SN 
type H
Size 20
Applicable fluid Water and hot water
Applicable 
temperature
5 - 90 Deg.C
(In using core at connection, applicable temperature 
will be 5 - 40 Deg.C)
Applicable
primary pressure
Max. 1.0MPa
Adjustable 
secondary pressure
0.05 - 0.12MPa 0.11 - 0.23MPa 0.22 - 0.30MPa
Rated flow 50 l/min
(pressure differential across the disc is over 0.1MPa)
Maximum 
reducing rate
10 : 1
Minimum pressure 
differential across 
the disc
0.02MPa
Materials Body : Cast bronze
Diaphragm and Disc : Synthetic rubber
End connection Screwed JIS Rc
RD-44N Pressure Reducing Valve for water
RD-44N type MP
RD-44N type MP

RD-44N type MB
RD-44N type MB
Model RD-44N 
type L
(P, B, C)
RD-44N 
type M
(P, B, C)
RD-44N 
type H
(P, B, C)
Size 20
Applicable fluid Water and hot water
Applicable
temperature
5 - 90 Deg.C
(In using core at connection applicable temperature 
will be 5 - 40 Deg.C)
Applicable
primary pressure
Max. 1.0MPa
Adjustable
secondary pressure
0.05 - 0.12MPa 0.11 - 0.23MPa 0.22 - 0.30MPa
Rated flow 50 l/min(pressure differential across the disc is over 0.1MPa)
Maximum
reducing rate
10 : 1
Minimum pressured
differential across 
the disc
0.02MPa
Materials Body : Cast bronze, Diaphragm and Disc : Synthetic rubber
End connection P(Male unions) : Screwed JIS R3/4
B(Female unions with pipe end core) : Screwed JIS Rc3/4
C(Male union and female union) : Screwed JIS R3/4
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RD-31N, 31FN, 33FN Cast bronze, Direct operating type Pressure Reducing Valve
RD31 - 33 series
RD-31 - 33 series
Model RD-31N RD-31FN RD-33FN
Size 15 - 50 25 - 50 65 - 150
Applicable fluid Water, hot water, air and inert gases
Applicable
temperature
5 - 90 Deg.C
( In using core at connection, applicable temperature 
will be 5 - 40 Deg.C)
Applicable
primary pressure
Max. 1.0MPa
Adjustable
secondary pressure
Spring range L : 0.05 - 0.35MPa
  H : 0.3 - 0.7MPa
over size 125 mm : 0.3 - 0.5MPa
Maximum
reducing rate
10 : 1
Minimum pressure
differential across
the disc
0.05MPa
Materials Body : Cast bronze
Diaphragm and Disc : NBR
End connection Screwed JIS Rc Flanged JIS 10KFF
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[Note] Applicable pressure 1.6MPa is available upon request
RDB-33FN Cast bronze, Direct operating type Pressure Reducing Valve with bypass
RDB-33FN
Model RDB-33FN
Size 20 - 100
Applicable fluid Water, hot water
Applicable
temperature
5 - 90 Deg.C
Applicable
primary pressure
Max. 1.0MPa
Adjustable
secondary pressure
Spring range L : 0.05 - 0.35MPa
  H : 0.3 - 0.7MPa
Maximum
reducing rate
10 : 1
Minimum pressure
differential across
the disc
0.05MPa
Materials Body : Cast bronze
Diaphragm and Disc : NBR
End connection Size 20, 25 : Loose Flanged JIS 10K
Size 32 - 100 : Flanged JIS 10KFF
RD-35 Stainless steel, Direct operating type Pressure Reducing Valve
RD-35
RD-35
Model RD-35L,H RD-35FL,H
Size 25 - 40 25 - 100
Applicable fluid Water, hot water, air and inert gases
Applicable
temperature
5 - 90 Deg.C
Applicable
primary pressure
Max. 1.0MPa
Adjustable
secondary pressure
range
Spring range L : 0.05 - 0.35MPa
  H : 0.3 - 0.7MPa
Maximum
reducing rate
10 : 1
Minimum pressure
differential across
the disc
0.05MPa
Materials Body and trim : Stainless steel 
Disc and Diaphragm : NBR
End connection Screwed JIS Rc Flanged JIS 10KFF
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[Note] Applicable pressure 1.6MPa is available upon request
RD-20 Stainless steel, Direct operating type Pressure Reducing Valve
RD-20
RD-20
Model RD-20L RD-20M RD-20H
Size 15 - 25
Applicable fluid Water, liquids, air or gases
Applicable
temperature
5 - 60 Deg.C
Applicable
primary pressure
Max. 2.0MPa
Adjustable
secondary pressure
Spring range
L : 0.02 - 0.12MPa, 
M : 0.1 - 0.3MPa, 
H : 0.25 - 0.5MPa
Maximum
reducing rate
Water, liquids: 10 : 1 Air, gases: 20 : 1
Minimum pressure
differential across
the disc
0.05MPa
Materials Body : Stainless steel
Diaphragm and Disc : NBR
End connection Screwed JIS Rc
or
Flanged JIS 10K RF
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RD-14 Cast iron, Direct operating type Pressure Reducing Valve
RD-14W
RD-14W
Model RD-14W RD-14CN RD-14H
Size 15 - 150
Applicable fluid Water, hot water, and air Water, hot water Oils not corrosive,
kerosene, lubricant,
heavy oil A and B, 
and hot water.
Applicable
temperature
5 - 60 Deg.C 5 - 90 Deg.C
Applicable
primary pressure
Max. 1.0MPa
Adjustable
secondary pressure
Size 20 - 80mm : 0.05 - 0.35MPa
  0.3 - 0.7MPa
Size 100 - 150mm : 0.05 - 0.35MPa
  0.3 - 0.5MPa
Maximum
reducing rate
10 : 1
Minimum pressure
differential across
the disc
0.05MPa
Maximum applicable viscosity - Under 800cSt
Materials Materials and Painting for Body Cast iron 
(Interior :
Epoxy resin
Exterior :
Metallic blue)
Cast iron(Inside & outside :
Nylon 11 coating)
Cast iron
Trim Disc and Seat : Cast bronze 
Disc and Diaphragm : Synthetic rubber
End connection Flanged JIS 10KRF
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RD-7 Direct operating type Pressure Reducing Valve
RD-7
Model RD-7
Size 10 & 15
Applicable fluid Fuel oils
Applicable
temperature
5 - 120 Deg.C
Applicable
primary pressure
Max. 1.0MPa
Adjustable
secondary pressure
0.01 - 0.08, 0.08 - 0.2, 0.2 - 0.3MPa
Maximum
reducing rate
20 : 1
Minimum pressure
differential across
the disc
0.05MPa
Fluid viscosity 700cSt or less
Materials Body : Cast iron, ( interior : Epoxy resin )
Trim : Cast bronze
Diaphragm and Disc : Synthetic rubber
End connection Screwed JIS Rc
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WVR-02 Cast iron, pilot type Pressure Reducing Valve
WVR-02
WVR-02
Model WVR-02
Size 40 - 400 250 - 400 40 - 200
Applicable fluid Water and hot water
Applicable
temperature
5 - 60 Deg.C
Applicable
primary pressure
Max. 1.0MPa Max. 1.6MPa
Adjustable
secondary pressure
0.05 - 0.35MPa 0.05 - 0.35MPa
0.3 - 0.95MPa 0.3 - 0.7MPa 0.3 - 1.0MPa
Maximum
reducing rate
10 : 1
Minimum pressure
differential across
the disc
0.05MPa
Materials Body : Cast iron, ( Interior : Epoxy resin )
Trim : Cast bronze
Diaphragm and Disc : Synthetic rubber
End connection Flanged JIS 10RF Flanged JIS 16KRF
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