Safety and Relief Valve
AL-140
* Superior durability due to all stainless steel made * Simple structure and easy maintenance * Easy adjustment |
![]() |
Feature | Lift type / Screwed / Stainless / Closed type | |
Category | Safety relief valve | |
Type | Lift type | |
Specifications | Application | Steam , Air , 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 | 220 degree(C) (*) | |
Material | Spring case | Cast stainless steel |
Valve | Cast stainless steel (SCS14A) | |
Valve seat | Cast stainless steel (SCS14A) |

* The maximum temperature is 150 degree(C) when using for water, oil, or other liquids. |
Size | L (mm) | H1 (mm) | Weight (kg) |
15A(1/2) | 34 | 40 | 0.7 |
20A(3/4) | 38 | 42 | 0.8 |
25A(1) | 43 | 51 | 1.1 |
32A(1 1/4) | 50 | 61.5 | 1.8 |
40A(1 1/2) | 60 | 64 | 2.8 |
50A(2) | 75 | 76 | 4.7 |
[About flow rate]
Selection data: | Set pressure range |

![]() |

Drawing (82 KB) |
Instruction Manual (278 KB) |
CAD external view (127 KB) |