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MIYAWAKI ESH21 User Manual

Inverted bucket steam trap
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ESH21
INVERTED BUCKET STEAM TRAP
USER'S MANUAL

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Summary of Contents for MIYAWAKI ESH21

  • Page 1 ESH21 INVERTED BUCKET STEAM TRAP USER'S MANUAL...

  • Page 2: Table Of Contents

    SAFETY GUIDE The model ESH21 is a cast steel inverted bucket steam trap for medium condensate loads and medium up to high pressure applications. In order to get maximum benefit from this product, be sure to read this manual before installing it.

  • Page 3: Specifications And Markings

    Model: Showing the product model name  Some pictures and illustrations in this manual are examples of the ESH21 model. For more details regarding dimensions and other specifications, please refer to the catalog. The model ESH21 fully complies with the requirements of the European Pressure Equipment Directive 2014/68/EU.

  • Page 4: Construction Details

    CONSTRUCTION DETAILS Body Pipe 21. Cover Gasket Cover Eyebolt Pin 22. Spacer Screen Plug Lever 23. C-Ring Cover Plug Bracket 24. Body Plug Valve Seat 25. Body Plug Valve Set Bolt 26. Seat Gasket Valve Holder Screen 27. U-Nut Name Plate 28.

  • Page 5: Installation

    INSTALLATION WARNING Pay very careful attention when working in hazardous environments. There is a risk of explosion and the possibility of dangerous gases leaking. Always check whether the pipeline contains flammable, high pressure or high temperature materials before starting to work. ...
  • Page 6 2) Check the flow direction indicated on the body. 3) When installing the model ESH21, install it so that the flow from the upstream line to the downstream line is horizontal and the name plate is on the top side of the body.

  • Page 7: Operation

    OPERATION CAUTION Before starting operation, open the bypass valve or blow valve completely and blow off the scale in the piping. 4.1 Operation procedure 1) After blowing off the scale from the piping, close the bypass valve or blow valve. 2) Open the stop valve on the trap outlet side.

  • Page 8: Maintenance

    CAUTION  When replacing parts, make sure the replacement parts are supplied by MIYAWAKI. The performance of steam traps deteriorates gradually over time due to wear, corrosion or dirt accumulating around the valve and the valve seat. Please conduct periodic diagnosis of traps in order to keep steam control systems and equipment working well.
  • Page 9 Repairs When a trap fails, it is necessary to clean the internal parts and to replace damaged parts. Take the failed trap apart following the steps below. 5.2.1 Disassembling the trap 1) Untighten the screen plug (3), take out the screen (17), check and clean it. 2) Unscrew the cover bolts (20) and remove the cover (2) from the body (1).
  • Page 10 4) Connect the internal unit removed from the cover (2) to the cover with the pin (15). 5) If there are loose threads on the internal unit, be sure to tighten them. 6) Place the cover gasket (21) on the sealing surface of the body (1). At this time, be careful not to displace the outlet passage hole of the cover gasket (21) and the body (1).
  • Page 11 4. Cover Plug 19. Rivet 18. Name Plate 20. Cover Bolt 2. Cover 26. Seat Gasket 5. Valve Seat 22. Spacer 14. Bracket 15. Pin 16. Set Bolt 23. C-Ring 7. Valve Holder 6. Valve 12. Eyebolt Pin 13. Lever 8.

  • Page 12: Troubleshooting

    TROUBLESHOOTING Problem Possible cause Solution Steam leaks or blows The condensate amount in the through. body (1) is extremely small, Remove the cover plug (4) and the valve opening state and pour water into the body continues due to the sinking of (1).

  • Page 13: Warranty

    Problems caused by devices or equipment other than MIYAWAKI’s, or a disallowed use environment When a repair or modification has been performed by anyone other than MIYAWAKI or people who are authorized to make such repairs Intrusion of salt or other substances that promote significant rust or corrosion or problems from fluids that contain the same substances Consumable parts such as Packing, Gasket, O-ring, Diaphragm, etc.

  • Page 14: Serial Number (S. No.) Designation

    1 7 1 1 → Jan.1, 2017 2 9 X M → Oct. 21, 2029 ● For 9-digit display S.No. □□□□□□□□□ MIYAWAKI identification number Represents the month. Represents the year. (last two digits of the year according to the Western calendar) Example of serial number designation 1 7 1 1 2 C 0 2 0 →...

  • Page 15: Guidance For Reading Special Product Name

    GUIDANCE FOR READING SPECIAL PRODUCT NAME 〇〇〇-○○-□ Special symbol: The symbol applies only to special products (Please refer to table 1 for details) Model symbol: Product model number Table 1 Symbol description Suffix Special contents Trap for high-pressure gas installed property (only for Gas Trap) Blow valve attached Change of gasket Special face to face dimension...
  • Page 16 If you have any question, please contact MIYAWAKI, our local authorized agent, or the company where you purchased the product.  In the interest of the development and improvement of our products, MIYAWAKI Inc. reserves the right to change the specification of the products without prior notice.
  • Page 17 MIYAWAKI GmbH Birnbaumsmühle 65, 15234 Frankfurt (Oder), Germany Tel: +49-335-4007-0097 www.miyawaki.net e-mail: info@miyawaki.de China Importer and Authorized representative: MIYAWAKI WEST Co., Ltd. Room 1705, No.1, Building No.311, Yanxin Road, Huishan Economic Development Zone, Wuxi, Jiangsu, China Tel: +86-510-8359-5125 www.miyawaki-inc.com.cn e-mail: mywkwest@miyawaki-inc.com.cn...

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