Ductile cast iron body and PTFE Disc
Japan, Yoshitake
YOSHITAKE AL-4T Safety and Relief Valve
Made in Japan
Manufacturer: Yoshitake
Model: AL-4T
Specifications
| Features | Ductile cast iron, closed cap, PTFE disc | |
|---|---|---|
| Type | Safety relief valve | |
| Specifications | Product type | Safety valve/Relief valve |
| Nominal size | 65A (2-1/2″) – 150A (6″) | |
| Application | Air, water, oil | |
| End connection | JIS 10K FF flanged, JIS16K FF | |
| Working pressure | 0.05 – 1.5 MPa (MAX.1.0Mpa for bronze trim) | |
| Max. temperature | 150 degree(C) | |
| Material | Body | Ductile cast iron |
| Spring case | Ductile cast iron | |
| Valve and valve seat | Bronze + PTFE or stainless steel + PTFE | |
Remarks
*1 Maximum working pressure for 150A is 0.8 MPa (connection: JIS 10K FF flanged).
*2 When working pressure is more than 1.2 MPa (for 65A and 80A) or 1.0 MPa (for 100A and 125A), a metal-to-metal seating is incorporated in.
*3 JIS 16K FF flanged is used when working pressure is more than 1.0 MPa.
Dimensions and Weights (JIS 10K FF flanged)
| Size | L (mm) | H1 (mm) | Weight (kg) |
|---|---|---|---|
| 65A(2 1/2) | 120 | 120 | 20 |
| 80A(3) | 130 | 130 | 22 |
| 100A(4) | 160 | 150 | 44 |
| 125A(5) | 200 | 205 | 88 |
| 150A(6) | 210 | 215 | 113 |
Dimensions and Weights (JIS 16K FF flanged)
| Size | L (mm) | H1 (mm) | Weight (kg) |
|---|---|---|---|
| 65A(2 1/2) | 120 | 120 | 20 |
| 80A(3) | 130 | 130 | 22 |
| 100A(4) | 160 | 150 | 44 |
| 125A(5) | 200 | 205 | 88 |
About flow rate
Selection data：
Apply Pressure Classification List
(unit: MPa)
| Model | Nominal size | A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|---|---|
| AL-4·4T | 65A | 0.05-0.1 | 0.11-0.25 | 0.26-0.55 | 0.56-1.0 | 1.01-1.5 | |||
| 80A-125A | 0.05-0.1 | 0.11-0.2 | 0.21-0.4 | 0.41-0.8 | 0.81-1.5 | ||||
| 150A | 0.05-0.1 | 0.11-0.2 | 0.21-0.4 | 0.41-0.8 |
■ Certified Capacity Table for AL-4T
· For air (20°C) <Pressure vessel structure standard>
(kg/h)
| Pressure MPa | Nominal size | 0.05 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 65A | 422 | 550 | 799 | 1073 | 1347 | 1621 | 1895 | 2169 | 2443 | 2717 | 2991 |
| 80A | 562 | 732 | 1064 | 1428 | 1793 | 2158 | 2522 | 2887 | 3252 | 3616 | 3981 |
| 100A | 999 | 1302 | 1891 | 2540 | 3188 | 3836 | 4484 | 5133 | 5781 | 6429 | 7077 |
| 125A | 1562 | 2035 | 2955 | 3968 | 4981 | 5994 | 7007 | 8020 | 9033 | 10046 | 11059 |
| 150A | 2249 | 2930 | 4256 | 5715 | 7173 | 8632 | 10091 | 11549 | 13008 | — | — |
(kg/h)
| Nominal size | Pressure MPa | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 |
|---|---|---|---|---|---|
| 65A | 3264 | 3538 | 3812 | 4086 | 4360 |
| 80A | 4346 | 4710 | 5075 | 5440 | 5804 |
| 100A | 7726 | 8374 | 9022 | 9671 | 10319 |
| 125A | 12072 | 13085 | 14098 | 15111 | 16124 |
| 150A | — | — | — | — | — |
· For water (accumulation: 25%) <Yoshitake standard>
(m³/h)
| Pressure MPa | Nominal size | 0.05 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 65A | 4.1 | 5.9 | 8.3 | 10.2 | 11.8 | 13.2 | 14.5 | 15.6 | 16.7 | 17.7 | 18.7 |
| 80A | 5.5 | 7.8 | 11.1 | 13.6 | 15.7 | 17.6 | 19.3 | 20.8 | 22.3 | 23.6 | 24.9 |
| 100A | 9.9 | 14.0 | 19.8 | 24.2 | 28.0 | 31.3 | 34.3 | 37.0 | 39.6 | 42.0 | 44.3 |
| 125A | 15.4 | 21.9 | 30.9 | 37.9 | 43.8 | 48.9 | 53.6 | 57.6 | 61.9 | 65.7 | 69.2 |
| 150A | 22.3 | 31.5 | 44.6 | 54.6 | 63.0 | 70.5 | 77.2 | 83.4 | 89.2 | — | — |
(m³/h)
| Nominal size | Pressure MPa | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 |
|---|---|---|---|---|---|
| 65A | 19.6 | 20.5 | 21.3 | 22.1 | 22.9 |
| 80A | 26.1 | 27.3 | 28.4 | 29.5 | 30.5 |
| 100A | 46.4 | 48.5 | 50.5 | 52.4 | 54.2 |
| 125A | 72.6 | 75.8 | 78.9 | 81.9 | 84.8 |
| 150A | — | — | — | — | — |
Dimensional drawing
