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Yoshitake OB-30 Manual

Temperature regulator
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Temperature Regulator
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Summary of Contents for Yoshitake OB-30

  • Page 1 Temperature Regulator...
  • Page 2 Step 0 Type/Structure/Features Please refer to this for type, structure and features of Temperature Regulator. Step 1 Selection Please refer to the ID chart to select the right products depending on the intended uses. Details are on the product page. Step 2 Sizing Please check the required Cv value from size selection...
  • Page 3 30˚C or more. Bellows · OB-1-OB-6 “G” type. Insusceptible to the ambient temperature and External pressure usable even at a place where the difference bellows between the set temperature and the ambient temperature is 30˚C or less. For liquid For air www.yoshitake.jp...
  • Page 4 Temperature Regulator Step Features of Direct Acting Type <OB-30> Application For small heat exchanger, HVAC and plating apparatus. Thermal bulb (Gas filled type) Thermal bulb can be installed in any Red or Blue handle position because the temperature is sensed by sealing gas. It is especially Red for heating and blue for cooling.
  • Page 5 ID-Charts Max. Max. Model Type Fluid Material Press. Temp. Connection Size Feature Page (MPa) (˚C) Steam OB-30 JIS Rc 15-25A · Heating (red Hot water handle) External pressure CAC406 185°C · Low-leakage bellows designed single Steam seat valve JIS Rc...
  • Page 6 15-25A designed single (union joint) bellows seat valve Steam, Hot water · Low-leakage External OB-6 pressure FC200 180°C JIS 10KFF 15-25A designed single bellows seat valve * Max. pressure depends on size. For details please refer to P. -26. www.yoshitake.jp...
  • Page 7 Point to remember when selecting the size ∙ If system has small capacity and seat leakage become a problem, select single valve type such as OB-30 Series, OB-5 or OB-6. ∙ Differential pressure between inlet and outlet of temperature regulator should be 0.05 MPa in principle. It is recommended that inlet pressure be 0.2-0.3 MPa to obtain the best performance of the temperature regulator and its longer product life.
  • Page 8 Temperature Regulator Step Guidelines for Temperature Regulator OB-30 Series OB-30 Series Precautions during Installation (Body and sensor are packed separately). ∙ Installation of body ∙ Assembly of body and thermal bulb Install the bellows follower into the bellows at thermal 1.
  • Page 9 Piping example Safety relief valve Hot water Thermometer Model OB-2000 Pressure Temperature regulator Thermal bulb gauge Storage tank Strainer Heating coil Stop Stop valve valve Water Bypass Sight glass Strainer Trap Blow www.yoshitake.jp...
  • Page 10 6. Remove the companion flange bolts from attaching part of the thermal bulb. Then screw the flange and insert the bulb to align holes of companion flange, tighten the bolts uniformly. Do WRONG not twist conduit pipe (except for the OB-5 ∙ 6). www.yoshitake.jp...
  • Page 11 Temperature Regulator OB-30,30U OB-31,31U Direct acting type Pilot operated type Heating Cooling Bellows Diaphragm Single valve Double valve Soft seat For heating For cooling Blue handle handle OB-30 OB-31 OB-30U OB-31U For heating For cooling Features 1. Red handle type is for heating and blue handle type for cooling. It is possible to identify their application at a glance.
  • Page 12 OB-30·31 Nominal size Body weight Rc 1/2 Rc 3/4 OB-30 Rc 1 · Body (OB-30U·31U) OB-30U·31U Nominal size Body weight Rc 1/2 Rc 3/4 Rc 1 · Sensor (Common to OB-30·31·30U·31U) Capillary length Weight 0.6 kg R 1/2 OB-31U www.yoshitake.jp...
  • Page 13 15A and 20A, select the larger one, 20A. · When the OB-30 or OB-30U is used and the fluid is hot water, use the selection chart shown above. * Chart of the flow rate is a reference value.
  • Page 14 · Available with capillary of 3 or 5 meter. *2 In the case of attached to spring chamber, the bush of thermal bulb will be unnecessary. Please refer to P. -40. · Available with NPT or BSPT screwed. · Available with ASME or EN flanged. www.yoshitake.jp...
  • Page 15 24.1 ( 23.7) 196 (192) 24.6 ( 24.2) 222 (218) 35.7 ( 35.5) 282 (278) 63.3 ( 63.0) 302 (294) 70.3 ( 68.1) 100A 342 (330) 110.0 (106.4) · The above values within parentheses are JIS 10K FF flanged. www.yoshitake.jp...
  • Page 16 0.5 MPa and the outlet pressure of 0.4 MPa. Trace down vertically from this intersection point (a) to find intersection point (b) with the flow rate of 400 kg/h. Since this intersection point (b) lies between nominal sizes 20A and 25A, select the larger one, 25A. * Chart of the flow rate is a reference value. www.yoshitake.jp...
  • Page 17 · Available with capillary of up to 5 meter. (Please refer to P. -46 for errors of set temperature). · Available with temperature adjusting range of 30˚C. (For OB-1 only). · Available with thermal well (SUS304 made or with a PTFE cap) for liquid. www.yoshitake.jp...
  • Page 18 · The term “withstand temperature” means the temperature from pressure resistance of the bellows. Dimensions (mm) and Weights (kg) (For air) (For liquid) OB-1G has a little difference in bellows structure. Nominal size Weight Rc 1/2 Rc 3/4 Rc 1 Rc 1-1/4 Rc 1-1/2 www.yoshitake.jp...
  • Page 19 MPa and the outlet pressure of 0.25 MPa. Trace down vertically from this intersection point (a) to find intersection point (b) with the flow rate of 60 kg/h. Since this intersection point (b) lies between nominal sizes 15A or 20A and 25A, select the larger one, 25A. * Chart of the flow rate is a reference value. www.yoshitake.jp...
  • Page 20 · Available with Max. temperature inside [ ]. (Valve and valve seat material, and bellow is different from standard type). · Available with temperature adjusting range of 30˚C. (For OB-2 only). · Available with thermal well (SUS304 made or with a PTFE cap) for liquid. www.yoshitake.jp...
  • Page 21 Dimensions (mm) and Weights (kg) (For liquid) (For air) Structure will be little different depends on sizes. OB-2G has a little difference in bellows structure. (mm) Nominal size Weight 100A 125A 150A ∙ The OB-2G comes in nominal size up to 125A. www.yoshitake.jp...
  • Page 22 MPa and the outlet pressure of 0.25 MPa. Trace down vertically from this intersection point (a) to find intersection point (b) with the flow rate of 60 kg/h. Since this intersection point (b) lies between nominal sizes 15A or 20A and 25A, select the larger one, 25A. * Chart of the flow rate is a reference value. www.yoshitake.jp...
  • Page 23 ∙ Available with capillary of up to 5 meter. (Please refer to P. -46 for errors of set temperature). ∙ Available with temperature adjusting range of 30˚C. (For OB-3 only). ∙ Available with thermal well (SUS304 made or with a PTFE cap) for liquid. www.yoshitake.jp...
  • Page 24 Dimensions (mm) and Weights (kg) R 1-1/4 (For liquid) (For air) OB-3G has a little difference in bellows structure. Nominal size Weight Rc 1/2 Rc 3/4 Rc 1 Rc 1-1/4 Rc 1-1/2 www.yoshitake.jp...
  • Page 25 (a) with the differential pressure (ΔP) 0.15 MPa (0.3 MPa – 0.15 MPa) before and after valve and the flow rate 9 m /h. Since this intersection point (a) locates between nominal sizes 32A and 40A, select the larger one, 40A. * Chart of the flow rate is a reference value. www.yoshitake.jp...
  • Page 26 ∙ Available with Max. temperature inside [ ]. (Valve and valve seat material, and bellows is different from standard type). ∙ Available with temperature adjusting range of 30˚C. (For OB-4 only). ∙ Available with thermal well (SUS304 made or with a PTFE cap) for liquid. www.yoshitake.jp...
  • Page 27 Dimensions (mm) and Weights (kg) (For liquid) (For air) Structure will be little different depends on sizes. OB-4G has a little difference in bellows structure. Nominal size Weight 100A 125A 150A · OB-4G comes in nominal size up to 125A. www.yoshitake.jp...
  • Page 28 (a) with the differential pressure (ΔP) 0.15 MPa (0.3 MPa – 0.15 MPa) before and after valve and the flow rate 9 m /h. Since this intersection point (a) locates between nominal sizes 32A and 40A, select the larger one, 40A. * Chart of the flow rate is a reference value. www.yoshitake.jp...
  • Page 29 ∙ Available with temperature adjusting range of 30°C. (For OB-5 only). Temperature Adjusting Range Temperature adjusting (°C) Withstand temperature (°C) For liquid For air 40-60 40-60 50-70 50-70 60-80 60-80 80-100 80-100 100-120 100-120 · The term “Withstand temperature” means the temperature from pressure resistance of the bellows. www.yoshitake.jp...
  • Page 30 (a) and find intersection point (b) with the flow rate 80 kg/h. Since this intersection point (b) locates between nominal sizes 15A or 20A and 25A, select the larger one, 25A. * Chart of the flow rate is a reference value. www.yoshitake.jp...
  • Page 31 ∙ Available with temperature adjusting range of 30˚C (OB-6 only). Temperature Adjusting Range Temperature adjusting (°C) Withstand temperature (°C) For liquid For air 40-60 40-60 50-70 50-70 60-80 60-80 80-100 80-100 100-120 100-120 · The term “Withstand temperature” means the temperature from pressure resistance of the bellows. www.yoshitake.jp...
  • Page 32 (a) and find intersection point (b) with the flow rate 80 kg/h. Since this intersection point (b) locates between nominal sizes 15A or 20A and 25A, select the larger * Chart of the flow rate is a reference value. one, 25A. www.yoshitake.jp...

  • Page 33: Table Of Contents

    Temperature Regulator – Annex OB-30 Series ………………………………………………………  OB-2000 Series ……………………………………………………  [OB-1 to OB-6] Precautions for installation ………………………………………  Piping example ……………………………………………………  Adjustment procedure ……………………………………………  Disassembly and disposal …………………………………………  Troubleshooting ……………………………………………………  Tolerance of set temperature ……………………………………...

  • Page 34: Temperature Regulator - Annex

    Temperature Regulator – Annex CAUTION Please refer to the manual attached to the product for procedures for installation and operation. OB-30 series Temperature Regulator – Annex Disassembly and troubleshooting OB-30 series Please note that body and sensor are supplied separately. Assemble body and sensor according to the following procedures.
  • Page 35 Temperature Regulator – Annex CAUTION Please refer to the manual attached to the product for procedures for installation and operation. Piping example OB-30 series · OB-30, OB-30U (for heating) · OB-31, OB-31U (for cooling) OB-31 Temperature regulator Safety relief valve...
  • Page 36 Please refer to the manual attached to the product for procedures for installation and operation. Disassembly and troubleshooting OB-30 series Make sure to close the stop valves installed at before and after the product, prior to disassembly. Completely discharge the pressure inside of the product, piping and equipment prior to disassembly and inspection.
  • Page 37 Temperature Regulator – Annex CAUTION Please refer to the manual attached to the product for procedures for installation and operation. · OB-30 · 30U (for heating) Trouble Cause Remedy Inadequate adjustment........Readjust according to the adjustment procedures. Temperature Insufficient drainage from the trap ....

  • Page 38: Ob-2000 Series

    Place the bellows follower, with its flat face downward, into the bellows. And then, screw the ring into the bellows. Please be careful not to lose the bellows follower attached to the product. OB-2000 main valve OB-2000P pilot valve Bellows follower Bellows Ring Completely discharge the internal pressure from the valves before disassembly. www.yoshitake.jp...

  • Page 39: Piping Example

    22°C 45°C 68°C 101°C - 2°C 15°C 37°C 61°C 89°C 130°C 6°C 25°C 49°C 76°C 107°C 153°C 14°C 34°C 58°C 91°C 125°C 178°C 21°C 43°C 67°C 106°C 147°C 210°C Completely discharge the internal pressure from the valves before disassembly. www.yoshitake.jp...

  • Page 40: Troubleshooting

    Some of structures differ according to product size. Please contact us for details. *1 Bushing is not required when using thermal well (stainless-steel made). Completely discharge the internal pressure from the valves before disassembly. www.yoshitake.jp...
  • Page 41 Leakage from the gasket........Retighten or replace the gasket. Outside Seal bellows is damaged........Replace the seal bellows. leakage. Special specifications Temperature regulator · OB-2000 Thermal well (stainless-steel made) Completely discharge the internal pressure from the valves before disassembly. www.yoshitake.jp...
  • Page 42 By-pass stop valve Water Strainer Condensate Trap <For Gas> Thermometer Capillary tube Pressure Thermal bulb (for Gas) gauge Temperature Pressure gauge regulator Equipment Strainer By-pass stop valve Strainer Trap Completely discharge the internal pressure from the valves before disassembly. www.yoshitake.jp...
  • Page 43 * These values are max. leakage amount under the working pressure of 0.5 MPa or max. pressure at the temperature of “set temperature +5˚C” for heating, or at the temperature of “set temperature -5˚C” for cooling. Completely discharge the internal pressure from the valves before disassembly. www.yoshitake.jp...
  • Page 44 3 Detach the bottom cover and take out the valve. · Precaution for disposal [OB-1, OB-1G, OB-2, OB-2G, OB-3, OB-3G, OB-4, OB-4G, OB-5, OB-6] * Thermal bulb contains alcohol or CFC. Disposal should be done accordingly. Completely discharge the internal pressure from the valves before disassembly. www.yoshitake.jp...
  • Page 45 Large error of Replace the product. temperature shocks or excessive heat. control. Thermal bulb and thermometer are installed ..Reinstall them properly in proper positions. improperly or in wrong positions. Completely discharge the internal pressure from the valves before disassembly. www.yoshitake.jp...
  • Page 46  Table of minimum length (ℓ) for internal high pressure type thermal bulb (mm) R 3/4 R 1-1/4 20A or larger 25A or larger 32A or larger Nominal size 15-25A 32-40A − 100A − 125A − − 150A − − Completely discharge the internal pressure from the valves before disassembly. www.yoshitake.jp...

This manual is also suitable for:

Ob-30uOb-31Ob-31uOb-2000Ob-1Ob-1g ... Show all