- Slim design, compact and lightweight.
- Simple construction, high strength and easy maintenance.
- Easy installation thanks to threaded connection.
- Possibility to adjust the pressure manually without any tools.
- High wear resistance and strength of stainless steel valve and valve seat
- A filter (60 mesh) is installed to protect the valve and seat from contamination.
- Excellent performance provided by impulse tube external pressure bellows.
| Model | GD-30 | |
| Nominal size | 15A-25A 40A • 50A | |
| Apply | Steam | |
| Inlet pressure | No more than 1.7 MPa | |
| Reduced pressure | (A) 0.02-0.1 MPa (spring color: yellow) | |
| (B) 0.05-0.4 MPa (spring color: blue) | ||
| (С) 0.35-1.0 MPa (spring color: yellow-green) | ||
| Min. differential pressure | 0.05 MPa | |
| Max. coefficient pressure reduction | 10:1 | |
| Max temperature | 210 °C | |
| Valve seat leaks | No more than 0.1% of nominal flow | |
| Material | Body | Cast Bronze |
| Valve, valve seat | Stainless steel | |
| Belfon | Phosphor bronze | |
| Connection | JIS Rc Thread | |
| Nominal Size | d | L | H | H1 | Weight |
|---|---|---|---|---|---|
| 15A | Rc 1/2 | 80 | 191 | 47 | 1.9 |
| 20A | Rc 3/4 | 85 | 191 | 47 | 1.9 |
| 25A | Rc 1 | 95 | 191 | 77 | 2.0 |
| 40A | Rc 1-1/2 | 140 | 307 | 77 | 10.1 |
| 50A | Rc 2 | 150 | 307 | 77 | 10.4 |
Nominal Sizes Selection Chart (For Steam)
[Example]
When selecting the nominal size of a pressure reducing valve whose inlet pressure (P1), reduced pressure (P2), and flow rate are 1.3 MPa, 0.6 MPa, and 200 kg/h, respectively, first find the intersection point of the inlet pressure of 1.3 MPa and the reduced pressure of 0.6 MPa. Trace down vertically from this intersection point to find the nominal size with a flow rate of 200 kg/h or over. In this case, the nominal size is 20A. Note) The nominal sizes selection chart is based on measured data. As you can see, there is no specific relationship between the pressure difference and the flow rate in the chart above, and it is, therefore, impossible to calculate a fixed Cv value.
* Set the safety factor at 80 to 90%.
Delivery
- Delivery by Poland with DHL courier service to the branch - free
- Delivery by Poland with DHL courier service to the branch at the address ("from door to door") - free
Payment
- Cashless payment with VAT: OPEKS Energysystems sp.z.o.o., TIN 5273030184, Santander Bank Polska S.A., SWIFT: WBKPPLPP, account number: 69 1090 1056 0000 0001 5227 8036, IBAN: PL69 1090 1056 0000 0001 5227 80
- Online Przelewy24 (Visa/MasterCard)
