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Yoshitake AL-6 Product Manual

Safety relief valve
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SAFETY RELIEF VALVE
Thank you very much for choosing the Yoshitake's product. To ensure the correct and safe use of the
product, please read this manual before use. This manual shall be kept with care for future references.
The symbols used in this manual have the following meanings.
Warning
Caution
1. Specifications ···························································· 1
2. Dimensions and Weights ············································· 2
3. Structure ································································ 3
4. Operation ······························································· 3
5. Nominal Size Selection Table ······································· 4
6. Installation ······························································ 5-6
7. Maintenance ····························································· 6
Warranty Information
MODEL AL-6
PRODUCT MANUAL
This symbol indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
This symbol indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury or may result in only property damage.
5.1 For steam (at saturated temperature) ······················· 4
7.1 Daily inspection ··················································· 7
7.2 Monthly inspection ··············································· 7
7.3 Troubleshooting ················································· 7-9

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■EPDT-241■

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Summary of Contents for Yoshitake AL-6

  • Page 1: Table Of Contents

    SAFETY RELIEF VALVE PRODUCT MANUAL Thank you very much for choosing the Yoshitake’s product. To ensure the correct and safe use of the product, please read this manual before use. This manual shall be kept with care for future references.

  • Page 2: Specifications

    1. Specifications Structure Open lever type Application Steam Working pressure 0.05 to 1.5 MPa* Max. temperature 220℃ Connection JIS 10K FF/16K FF flanged* Maximum Working pressure for 150A is 0.8MPa. JIS 16K FF flanged when working pressure is more than 1.0 MPa. 1.

  • Page 3: Dimensions And Weights

    2. Dimensions and Weights Fig.1 Dimensions Dimensions [mm] Nominal Flow area Weight size (kg) 331.9 20.2 441.8 130(132) 493(495) 24.0 100A 785.4 150(152) 626(628) 44.0 125A 1227.2 205(207) 835(837) 88.0 150A 1767.2 215(217) 845(847) 113.0 ・The values in parentheses are the dimensions of JIS 16K FF flanged. ■EPDT-241■...

  • Page 4: Structure

    3. Structure Part name Body Spring case Valve seat Valve Spindle Guide plate Spindle guide Spring plate 10 Adjusting screw 11 Lock nut 12 Spring 14 Lever 15 Stud bolt & nut 16 Pin 17 Nut 18 Bolt 19 Plug 20 Name Plate 21 Gasket 22 Split pin...

  • Page 5: Nominal Size Selection Table

    5. Nominal Size Selection Table 5.1 For steam (at saturated temperature) <Pressure vessel structure standards> [kg/h] Set pressure [MPa] Nominal size 0.05 1000 1165 1328 1489 1651 1814 1111 1331 1550 1767 1983 2198 2415 100A 1168 1569 1975 2367 2756 3142 3525...

  • Page 6: Installation

    6. Installation ・Fig. 3 reference. Warning 1. Do not install any closing device such as a stop valve at inlet and outlet sides of the product. 2. Install an exhaust pipe on outlet side of the product, and lead it to a place where there is no risk of physical damage even if fluid blows out.

  • Page 7: Maintenance

    Fig. 3 Piping example 7. Maintenance Warning 1. Do not touch the product/pipes with bare hands when touching them or operating the lever or operating with lever [14]. * Failure to follow this notice may result in scalds or injury. 2.

  • Page 8: Daily Inspection

    7.1 Daily inspection Check the following items while the system is in operation. • Corrosion or crack on the product • Leakage from the product under normal working pressure (check it visually and aurally). • Leakage from connection between the product and piping. * Please contact us if any abnormal condition is observed.
  • Page 9 4. The product is installed at outlet 4. The pressure reducing valve needs to be side of the pressure reducing repaired. If it is Yoshitake product, please valve which is out of order, and the contact us. reduced pressure of the valve is getting higher than expected.
  • Page 10 Lever cannot be lifted. 1. Inlet pressure is low. 1. Increase inlet pressure to 75% of set pressure or more. 2. Sliding portions of the valve [5] and 2. The product needs to be disassembled valve seat [4] does not move and cleaned.

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