| Model | GD-28S | |
| Application | Cold and hot water | |
| Inlet pressure | 1.6 MPa or less | |
| Reduced pressure | (A) 0.05-0.35 MPa (B) 0.3-0.7 MPa | |
| Min. differential pressure | 0.05 MPa | |
| Max. coeff. pressure reduction | 10: 1 | |
| Operating temperature | 5-90 ° C | |
| Material | Frame | Cast stainless steel |
| Valve seat | Cast stainless steel | |
| Valve plug | Ethylene Propylene Rubber | |
| Membrane | Ethylene Propylene Rubber | |
| Compound | JIS Rc Threaded Connection | |
A filter (40 mesh) is installed on models from 20A to 50A.
Pressure gauge connection with JIS Rc 1/4 thread.
Variants available with fluoroelastomer components.
- The parts of the flow path are made of a material resistant to corrosion, which excludes the presence of rusty debris.
- Low noise level.
- The pressure balanced design of the valve allows the reduced pressure to be kept constant without being influenced by the inlet pressure.
- The closed design keeps liquid inside even if the diaphragm is damaged or broken.
- The valve top is easily removable for inspection and maintenance.
- Compact and lightweight design makes piping easy.
| Nominal size | d | L | H | H 1 | The weight |
| 20A | Rc 3/4 | 135 | 170 | 41 | 2.2 |
| 25A | Rc 1 | 135 | 170 | 41 | 2.2 |
| 32A | Rc 1-1 / 4 | 180 | 224 | 57 | 4.7 |
| 40A | Rc 1-1 / 2 | 180 | 224 | 57 | 4.5 |
| 50A | Rc 2 | 200 | 239.5 | 61 | 6.5 |
Nominal sizing diagram
Differential pressure before and after the valve is not less than 0.15 MPa
| Nominal size | 15A | 20A | 25A | 32A | 40A | 50A | 65A | 80A | 100A | 125A | 150A |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nom. flow rate, l / min | thirty | 40 | 60 | 100 | 150 | 250 | 300 | 450 | 700 | 1600 | 1800 |
* If the differential pressure upstream and downstream of the valve is less than 0.15 MPa, select the correct nominal size using the appropriate diagram below.
Inlet pressure
Consumption graph
Nominal size: 15A-50A
Consumption graph
Nominal size: 65A-100A
Inlet pressure
Consumption graph
Nominal size: 125A-150A
Noise performance graph
Pressure curve
This graph shows the change in reduced pressure when the pressure of 0.6 MPa at the valve inlet begins to fluctuate between 0.15 MPa and 1.0 MPa, while the reduced pressure is set at 0.1 MPa.
Flow characteristics graph
* Pressure offset
| Nominal size | Pressure range | Decrease range pressure | Offset pressure |
| 15A - 100A | A | 0.05-0.35 MPa | no more than 0.05 MPa |
| B | 0.3-0.7 MPa | no more than 0.10 MPa | |
| 125A, 150A | A | 0.05-0.20 MPa | no more than 0.07 MPa |
| B | 0.2-0.5 MPa | no more than 0.12 MPa |
Delivery
- Pickup from a warehouse in Kiev - is free
- New Mail - at the rates of the delivery service, at the rates of the delivery service, at the rates of the delivery service
- SAT - at the rates of the delivery service
- Deliveri - at the rates of the delivery service
Payment
- Cashless payment with VAT
- Online Privat24, Visa / MasterCard
