JIS F3059 Cast Steel Vertical Storm Valve
Typical Specifications Summary
Feature: Specification / Description
Standard: JIS B 2071 / B 2081
Pressure-Temp Rating: 5K (e.g., 0.5 MPa @ 120°C)
Body Material: Cast Steel (SC450)
Disc / Wedge: Carbon Steel (Often with 13Cr trim or equivalent for wear)
Stem: Carbon Steel or Stainless Steel (Option)
Seat Rings: Integral body seat or welded seat rings
Overview
Application-Oriented Features
• Bi-Directional Flow: Can be installed in either flow direction, though typical installation has pressure under the wedge.
• Service Fluids: Suitable for a wide range of services including water, steam, air, oil, and non-corrosive gases.
• Temperature Range: Ideal for moderate temperature services, typically from -20°C to around 250°C, depending on the specific trim and packing materials.
• Installation Orientation: Must be installed with the stem vertical. It cannot be installed on its side, as this would impede stem movement and cause abnormal wear.
Drawing

Elementary Dimensions
Type | Size | H | D | C | No. | h | t | L1 | D2 | Kg |
F3059 | 050 | 210 | 130 | 105 | 4 | 15 | 16 | - | 100 | 11.5 |
065 | 240 | 155 | 130 | 4 | 15 | 18 | - | 100 | 16.5 | |
080 | 260 | 180 | 145 | 4 | 19 | 18 | - | 125 | 21.6 | |
100 | 280 | 200 | 165 | 8 | 19 | 20 | - | 125 | 29.6 | |
125 | 330 | 235 | 200 | 8 | 19 | 20 | - | 125 | 43.6 | |
150 | 360 | 265 | 230 | 8 | 19 | 22 | - | 125 | 51.6 | |
200 | 459 | 320 | 280 | 8 | 23 | 24 | - | 125 | 106.5 |
