Yoshitake Control Valves / Self-operated Regulators

Model comparison

Compare only the points that determine the choice: function or construction, applicable medium, operating range, body material, and connection or nominal size. Open the model page to confirm the full specification.

Model	Key selection point	Medium	Operating range	Body material	Connection / size
CF-60	Constant Flow Valve	5-60°C	1.0 MPa 5-60°C	—	JIS Rc screwed / Flangeless (wafer type); 25A-50A: JIS Rc screwed; 65A-100A: Flangeless (wafer type)
CF-90	Constant Flow Valve for Cold and Hot Water	Cold and hot water	1.0 MPa 5 - 90°C	—	JIS Rc screwed; Constant flow valve, 1.0 MPa, JIS Rc screwed
CP-2005	Combination Valve (Temperature Regulator with PRV), Ductile Cast Iron, 2.0 MPa	Heating fluid: Steam, Heated fluid: Water, Oil, Liquid	0.1 - 2.0 MPa 220°C	—	JIS Rc screwed, JIS 10K/20K flanged; Temperature Regulator with PRV
GD-20R	Primary Pressure Regulating Valve and Pressure Sustaining Valve	Cold and hot water, Oil, Air, Other non-dangerous fluids	0.05-0.7 MPa 5-80°C (GD-20R) / 5-60°C (GD-20RC)	—	Electrodeposition or tar-based coating
GD-20RC	Primary Pressure Regulating Valve / Pressure Sustaining Valve	Cold and hot water	(A) 0.05-0.25 MPa, (B) 0.26-0.7 MPa 5 - 60 °C	Ductile cast iron (FCD450) with Nylon 11 coating	JIS 10K FF Flanged; Nylon 11 coated (inside and outside surfaces)
GD-21	Differential Pressure Regulating Valve	Cold and hot water	15A-80A: 0.05-0.7 MPa \| 100A-150A: 0.05-0.5 MPa 5-80°C	Ductile cast iron	JIS 10K FF flanged; Differential pressure regulating valve, direct type
GD-47R	Primary Pressure Regulating Valve	Steam	0.2-0.9 MPa 220°C or less	—	JIS 10K FF flanged; Primary pressure regulating valve, Steam, 0.2-0.9 MPa, External sensing
GD-4R	Primary Pressure Regulating Valve	Air, Other non-dangerous fluids	2-200 kPa 5-80°C	—	JIS 10K FF flanged; 20-150A, JIS 10K FF
GPR-2000	Primary Pressure Regulating Valve	Steam	External sensing type 220℃	Ductile cast iron (FCD450)	JIS Rc screwed, JIS 20K RF flanged, JIS 10K FF flanged, NPT; Screwed: JIS Rc screwed connection; Flanged: JIS 20K RF / 10K FF flanged connection
MXV-1	Mixing Valve	Cold and hot water	1.0 MPa or less 38-65°C	—	Mixing valve, 25A-50A, JIS Rc screwed
OB-1	Direct-Acting Temperature Regulator	Heating	0.7 MPa 180°C	0.7 MPa	JIS Rc screwed (union joint); Temperature regulator for standard ambient temperatures
OB-1G	Direct Acting Temperature Regulator	—	0.7 MPa 180°C	0.7 MPa	JIS Rc screwed (union joint); External pressure type bellows, 15-100°C range
OB-2	OB-2G Direct Acting Temperature Regulator	Heating (Steam, Hot water)	Up to 0.7 MPa (depends on size) 180°C	Cast Iron	JIS 10K FF flanged; Standard bellows, temperature adjusting range 40-120°C
OB-2G	Temperature Regulator	Steam, Hot water	0.7 MPa (15A-40A) 15-100°C	—	JIS 10K FF flanged; External pressure type bellows, 15A-125A
OB-2000	Pilot Operated Temperature Regulator	Steam	2.0 MPa 220°C	—	JIS Rc screwed, JIS 10K FF / 20K RF flanged; Pilot operated temperature regulator, 2.0 MPa, 220°C
OB-3	Temperature Regulator Valve	Cooling / Heating	0.7 MPa 180°C	0.7 MPa	JIS Rc screwed (union joint); Standard temperature regulator valve, 40-120°C
OB-3G	Temperature Regulator Valve	—	0.7 MPa 180°C	0.7 MPa	JIS Rc screwed (union joint); External pressure type bellows, 15-100°C range
OB-30	Temperature Regulator	—	1.0 MPa (1.7 MPa for hot water/cooling) 185°C	Bronze	JIS Rc screwed / Union joint; For heating, JIS Rc screwed
OB-30U	—	—	1.0 MPa (1.7 MPa for hot water/cooling) 185°C	Bronze	JIS Rc screwed / Union joint; For heating, JIS Rc screwed (union joint)
OB-31	Temperature Regulator for Cooling	Cold water, Refrigerant	1.7 MPa	Bronze	JIS Rc screwed; For cooling, JIS Rc screwed connection
OB-31U	Direct-Acting Temperature Regulator for Cooling	Cold water, Refrigerant	1.7 MPa 185°C (Sensor max 100°C for cooling)	Bronze	JIS Rc screwed (union joint); For cooling, union joint, max pressure 1.7 MPa
OB-4	OB-4G Direct Acting Temperature Regulator Valve	—	0.7 MPa (15A-40A) / 0.5 MPa (50A-65A) / 0.4 MPa (80A-100A) / 0.2 MPa (125A-150A) 180°C	Cast iron	JIS 10K FF flanged; Standard bellows, 40-120°C adjusting range, 15A-150A
OB-4G	Temperature Regulator Valve (Cooling)	Cooling	180°C	Cast iron	JIS 10K FF flanged; 15A-125A, JIS 10K FF flanged, For Cooling

Process scope

Yoshitake self-operated regulators maintain pressure or temperature without an external powered controller in the local catalogue. The product group includes pressure regulators and temperature regulators for heating, cooling, water, oil, and steam systems; choose by the controlled variable, sensing arrangement, medium, range, and available pressure differential.

Project-specific checks

Specify the controlled variable, target/set range, sensor location, and allowable deviation.
Provide medium, pressure, temperature, required flow, and available pressure differential across the regulator.
Confirm bulb/capillary placement, ambient exposure, bypass arrangement, and start-up behavior.
Check connection, body material, maintenance access, and any required fail-safe or manual override.

Final verification

This guide groups local Yoshitake catalogue pages for preliminary engineering review. The model-specific Yoshitake documentation, sizing calculation, materials confirmation, and applicable site requirements control the final order and installation decision.