Safety and Relief Valve AL-31 | Yoshitake Inc.

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Safety and Relief Valve


* Superior durability due to all stainless steel made
* Small and compact
* Simple structure and easy maintenance

Feature Lift type / Flanged / Stainless steel / Closed type
Category Safety relief valve
Type Lift type
Specifications Application Steam , Air , Oil , Cold and hot water , Other non-dangerous fluids
Pressure range 0.05 - 1.0MPa("\"\\\"Refer to setting pressure range table.\\")
Connection JIS 10K RF flanged
Max. temperature 220 degree(C) (*)
Material Valve case Cast stainless steel
Spring case Cast stainless steel
Valve Stainless steel
Valve seat Stainless steel
* The maximum temperature is 150 degree(C) when using for water, oil, or other liquids.

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Size L (mm) H1 (mm) Weight (kg)
15A(1/2) 73 72 3.4
20A(3/4) 77 74 4.5
25A(1) 91 87 6.5
32A(1 1/4) 96 92 8.1
40A(1 1/2) 114 100 11.4
50A(2) 116 107 15

[About flow rate]

Selection data: Set pressure range 

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Dimensional drawing
Dimensional drawing:AL-31

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Drawing (111 KB)
CAD external view (71 KB)

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