Download
Share
Print this page
  1. Manuals
  2. Brands
  3. Yoshitake Manuals
  4. Control Unit
  5. GD-30S
  6. Installation & operation manual

Yoshitake GD-30S Installation & Operation Manual

Pressure reducing valve
Hide thumbs
1
2
3
4
5
6
7
8
9

Advertisement

Quick Links

Download this manual
PRESSURE REDUCING VALVE
Please read this bulletin thoroughly before using the pressure reducing valve, so that
you may do so correctly and safely. Please carefully store this bulletin in a handy place.
---------The following safety symbols are used in this manual. --------
This symbol indicates a potentially hazardous situation that, if not
Warning
avoided, could result in death or serious injury.
This symbol indicates a hazardous situation that, if not avoided, may
Caution
result in minor or moderate injury. ("Caution" may also be used to
indicate other unsafe practices or risks of property damage.)
1. Specifications ······························································· 1
2. Dimensions and Weights ················································ 1
3. Operation ···································································· 2
4. Nominal Size Selection Chart ··········································· 3
5.1 Example of piping ····················································· 4
5.2 Precautions during installation ····································· 4
6.1 Precautions during operation ······································· 5
6.2 Adjustment procedures ·············································· 5
7.1 Troubleshooting ························································ 6
7.3 Disassembly procedure ·············································· 6
7.4 Exploded drawing ····················································· 7
Model GD-30S
Installation & Operation Manual
Contents
■EPDT-127b■

Advertisement

loading
Need help?

Need help?

Do you have a question about the GD-30S and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Yoshitake GD-30S

Summary of Contents for Yoshitake GD-30S

  • Page 1: Table Of Contents

    Model GD-30S PRESSURE REDUCING VALVE Installation & Operation Manual Please read this bulletin thoroughly before using the pressure reducing valve, so that you may do so correctly and safely. Please carefully store this bulletin in a handy place. ―――――――――The following safety symbols are used in this manual. ――――――――...

  • Page 2: Specifications

    1. Specifications Model GD-30S Size 15A, 20A, 25A Fluid Steam Connection JIS Rc Screwed, NPT Screwed, BSPT Screwed Inlet Pressure 2.0 MPa or less Type Spring Color Setting Pressure range A Spring 0.02～0.1MPa Yellow Reduced Pressure B Spring 0.05～0.4 MPa...

  • Page 3: Operation

    3. Operation When the adjusting screw [11] connected to the handle [4] pushes the adjusting spring [12]，the bellows [10] are extended and the spindle [8] opens the valve [7].When the valve opens, the steam flowing to the outlet side passes through the reduced pressure detection hole, and becomes an upwardly directed pressure under the bellows and balances the force of the adjusting spring.

  • Page 4: Nominal Size Selection Chart

    4. Nominal Size Selection Chart [Example] Under the following operating conditions, the appropriate nominal size would be determined as described below. Inlet pressure (P ): 1.3 MPa Reduced pressure (P ): 0.6MPa Steam flow rate: 200 kg/h First, find the point where the inlet and reduced pressures intersect. Next draw a line straight down from that point to the nominal size scale where a flow rate of 200kg/h or more is indicated.

  • Page 5: Installation

    5. Installation 5.1 Example of piping 5.2 Precautions during installation Warning In case installing safety valve as safety device at outlet side, joint relief pipe at outlet of safety valve and guide it to safety place where steam can relief out. * Failure to do so may result in burns.

  • Page 6: Operating Procedure

    6. Operating Procedure 6.1 Precautions during operation Warning Do not touch the valve directly with bare hands. * Doing so may result in burns. Before flow the steam in pipeline, make sure steam can flow without any dangerous at the end of pipeline and pipeline is connected tightly.

  • Page 7: Maintenance Procedure

    7. Maintenance Procedure 7.1Troubleshooting Problem Cause Solution 1.Incorrect pressure is being used. 1.Correct the pressure. 2.Nominal size is too small for these 2.Replace with the correct nominal specifications. sized item. Pressure does not rise to the desired 3.Incorrect adjustment. 3.Re-adjust according to the level.

  • Page 8: Exploded Drawing

    7.4 Exploded drawing * Part names shown in boxes are consumable items. ■EPDT-127b■...

  • Page 9: Warranty Information

    ( e.g. in case of corrosion due to outdoor use). Fire, flood, earthquake, thunder and other natural disasters. Consumable parts such as O-ring, gasket, diaphragm and etc. Yoshitake is not liable for any damage or loss caused by malfunction or defect of the product. PDD-046f...