Safety and Relief Valve AL-250R | Yoshitake Inc.

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Safety and Relief Valve


* Superior durability due to all stainless steel made
* Simple structure and easy maintenance
* Unique structure especially for relief valve
* Stable operation even with back pressure change produced in continuous blow
* Set pressure is easily changed by handle

Feature Proportional type / Screwed / Stainless steel / With handle
Category Relief valve
Type Proportional type
Specifications Application Cold and hot water , Oil , Other non-dangerous fluids
Pressure range 0.05 - 1.0MPa("Refer to setting pressure range table.")
Connection JIS Rc screwed
Max. temperature 120 degree(C)
Material Spring case Cast stainless steel
Valve Stainless steel
Valve seat Stainless steel

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Size L (mm) H1 (mm) Weight (kg)
15A(1/2) 34 41 0.9
20A(3/4) 38 45 1.1
25A(1) 43 51.5 1.4
32A(1 1/4) 50 63.5 2.5
40A(1 1/2) 60 68.5 3.7
50A(2) 75 80 6.0

[About flow rate]

Selection data: Set pressure range  Nominal Size Selection Chart (For Water) 

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Dimensional drawing
Dimensional drawing:AL-250R

Data Downloading
Drawing (97 KB)
CAD external view (324 KB)
Data for the agency

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