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EPDT-193e

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MODEL AL-150T series and AL-140T series

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.
The symbols used in this manual have the following meanings.

Warning

This symbol indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.

Caution

This symbol indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury or may result in only property damage.

Table of Contents

1. Usage of the Product ·················································· 1

2. Specifications···························································· 1

3. Dimensions and Weight ··············································· 2

4. Structure ································································ 3

5. Operation ······························································· 3

6. Nominal Size Selection Table ········································ 4

6.1 For air (at 20˚C) ··················································· 4

6.2 For water (

at 20˚C,

accumulation: 25%) ····················· 4

7. Installation ································································ 5

7.1 Piping example ···················································· 6

8. Maintenance ····························································· 6

8.1 Daily inspection ··················································· 7

8.2 Regular inspection ··············································· 7

8.3 Troubleshooting ··················································· 7

8.4 Procedure for set pressure adjustment ······················ 9

Warranty Information

Содержание AL-140T Series

Страница 1: ...n that if not avoided could result in death or serious injury Caution This symbol indicates a hazardous situation that if not avoided may result in minor or moderate injury or may result in only property damage Table of Contents 1 Usage of the Product 1 2 Specifications 1 3 Dimensions and Weight 2 4 Structure 3 5 Operation 3 6 Nominal Size Selection Table 4 6 1 For air at 20 C 4 6 2 For water at 2...

Страница 2: ...5 50A Material Spring case Cast bronze Cast stainless steel Cast bronze Valve valve seat Stainless steel Spring Stainless steel O ring Composition rubber Closed lever type AL 150TML and AL 140TML are able to carry out a blowout inspection manually Handle type AL 150TR is available for use in relief valve which is easy to change the set pressure Warning 1 Do not use the product for equipment or dev...

Страница 3: ... 40A 135 2 Rc 1 1 2 41 60 60 64 50A 208 2 Rc 2 51 75 76 76 Nominal size Dimensions mm Weight kg H AL 150T AL 140T AL 150TML AL 140TML AL 150TR AL 150T AL 140T AL 150TML AL 140TML AL 150TR 15A 128 128 157 185 0 7 0 8 1 0 20A 128 5 128 5 158 185 0 8 0 9 1 1 25A 144 5 148 174 203 1 1 1 3 1 4 32A 181 5 181 5 212 250 1 8 1 9 2 1 40A 205 205 246 280 2 8 3 0 3 1 50A 245 5 245 5 286 315 4 7 4 9 5 1 AL 150...

Страница 4: ...atmosphere by the pop action of valve 3 the force of fluid lift is lowered At this point the repelling force of the spring 8 becomes larger than the force of fluid lift and thus the valve closes In addition while the safety relief valve discharges pressure of fluid entering into the back of the valve 3 back pressure adds to the closing force AL 150T AL 140T No Part name 1 Spring case 2 Valve seat ...

Страница 5: ...7 6 2 For water at 20 C accumulation 25 Capacity Yoshitake standard m3 h Nominal size Blowout area mm2 Set pressure MPa 0 05 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 15A 20 1 0 4 0 5 0 9 1 1 1 3 1 5 1 6 1 8 1 9 2 0 2 1 20A 34 6 0 6 0 9 1 6 2 0 2 3 2 6 2 8 3 1 3 3 3 5 3 7 25A 53 0 1 0 1 5 2 5 3 1 3 6 4 0 4 4 4 7 5 1 5 4 5 7 32A 93 3 1 8 2 6 4 5 5 5 6 3 7 1 7 8 8 4 9 0 9 5 10 0 40A 135 2 2 7 3 8 6 5 ...

Страница 6: ...spectively Failure to follow this notice may prevent the product from functioning properly 3 Install the product vertically with the cap 13 facing upward Failure to follow this notice may prevent the product from functioning properly 4 Securely support and fasten the pipes Refer to the following Pipe mount and Exhaust pipe If an excessive stress is applied to the piping the product may be deformed...

Страница 7: ...n not be subject to the stress caused by thermal expansion of equipment and by dilatation of the exhaust pipe due to thermal action of blowout 2 Inner diameter of exhaust pipe shall be more than that of the product outlet to avoid improper back pressure 7 1 Piping example 8 Maintenance Warning 1 Do not touch the product pipes or the lever 19 with bare hands Failure to follow this notice may result...

Страница 8: ...n by lever operation is possible Size Differential pressure between set and inlet pressures 15 25A 1 0 MPa or less 32 40A 0 6 MPa or less 50A 0 4 MPa or less 8 3 Troubleshooting Trouble Cause Remedy Leakage detected at the outlet 1 Foreign substance or scale stuck on contact surface between the valve 3 and valve seat 2 1 Follow the procedure described in 8 2 2 to operate the product and eliminate ...

Страница 9: ...disassembled and cleaned Please contact us 2 Sliding parts of the valve 3 and valve seat 2 do not move smoothly 2 The product needs to be disassembled and cleaned Please contact us 3 The normal working pressure exceeds the closing pressure 3 Increase the difference between the set pressure and normal working pressure If the set pressure needs to be readjusted please contact us 4 The product is ins...

Страница 10: ...he limited numbers of turns Using tools or turning it with excessive force causes damage to the handle or malfunction of the product Procedure for adjusting the set pressure of AL 150TR See Fig 2 Structure 1 Loosen the lock nut 12 by turning it counterclockwise by hand Outer peripheral surface of the lock nut 12 is knurled for easy turning by hand 2 To increase the set pressure turn the handle 18 ...

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