Fushiman Co.
Fushiman PPD41B Pressure Reducing Valves
Manufacturer: Fushiman Co.,LTD.
Model: PPD41B
The photo shows a cast bronze spring guard.
| Model | Nominal Diameter |
Primary Pressure | Secondary Pressure Range | Maximum Operating Temperature | Body Material | Connection |
|---|---|---|---|---|---|---|
| PPD41B | 15〜25 | MAX. 4.0MPa | 0.6～3.0MPa | 80℃ | SUS | Flange |
- The valve adopts a secondary pressure balance method, so the secondary pressure is hardly affected by fluctuations in the primary pressure.
- The PPD41B-3 type pressure reducing valve is for high-pressure applications.
- If the capacity is insufficient, please use the PHP30 type high-pressure gas pressure reducing valve (for specifications, please contact us).
- We also manufacture high-pressure gas equipment certified products.
Specifications and Materials
| Fluid | Pressure MPa | Temperature ℃ | Main Component Materials | Pipe Connection | |||||
|---|---|---|---|---|---|---|---|---|---|
| Primary Side | Secondary Side Setting Range | Valve Box | Lower Cover | Spring Protection Tube | Valve Body ♦ Valve Stem | Diaphragm | |||
| Air and Non-Corrosive Gases | 0.7 – 4.0 | 0.6〜1.6 1.3〜2.3 2.0〜3.0 |
0 – 80 | Stainless Steel | Stainless Steel | Cast Steel or Carbon Steel | Stainless Steel (Valve Contact Surface with Teflon Coating) | Synthetic Rubber | Flange JIS 40K Flat Face |
Note 1: ASME Class 300 and ASME Class 600 can also be manufactured.
Performance
| Minimum Settable Differential Pressure | 0.1 MPa |
|---|---|
| Offset | Approximately 10% of the maximum set pressure |
| Tight Shutoff Pressure Increase | Approximately 0.1 MPa |
| Minimum Adjustable Flow Rate (Air) (1) | 3 m³/h (Standard Conditions) |
| Seat Leakage | Less than 0.05% of the rated flow rate |
Note (1): For gases other than air, divide by √G (where G is the specific gravity of the gas, with air as 1).
CV Value
| Nominal Diameter | 15 | 20 | 25 |
|---|---|---|---|
| CV | 1.8 | 2.6 | 3.9 |
Structure and Dimensions
The diagram shows a cast bronze spring guard tube.
Dimensions and Mass
(mm, kg)
| Nominal Diameter | L | Hi | h2 | E | Mass |
|---|---|---|---|---|---|
| 15-20 | 223 | 83 | 182 | 140 | 18 |
| 25 | 227 | 83 | 182 | 140 | 20 |
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