| Model | GD-7B | ||
| Application | Cold and hot water, oil, other non-hazardous liquids | ||
| Nominal size | 20A-50A | 65A-150A | |
| Inlet pressure | 0.1-1.0 MPa | ||
| Low pressure | (A) 0.05-0.25 MPa (B) 0.25-0.45 MPa (C) 0.45-0.7 MPa | (A) 0.05-0.2 MPa (B) 0.2-0.5 MPa (C) 0.5-0.7 MPa | |
| Up to 85% of inlet pressure (gauge) | |||
| Min. differential pressure | 0.05 MPa | ||
| Max. coeff. pressure reduction | 20A-50A: 20: 1 65A-150A: 15: 1 | ||
| Operating temperature | 5-80 ° C * | ||
| Valve seat leaks | No | ||
| Fluid viscosity | No more than 700 cSt | ||
| Material | Frame | Cast iron | |
| Valve | NBR | ||
| Valve seat | Stainless steel | ||
| Stock | Stainless steel | ||
| Plunger | Bronze | ||
| Compound | Flange connection JIS 10K FF | ||
Models available with a maximum operating temperature of 120 ˚C.
The GD-7BH cast steel model is available, with a pressure regulation range of 0.7-1.6 MPa and an inlet pressure of no more than 2.0 MPa.
- Simple design, less prone to failure, easy maintenance.
- Highly effective when used to relieve the pressure of viscous oils and greases.
- The pressure balanced design of the valve provides a stable underpressure and a high pressure reduction ratio.
| Nominal size | L | H | H 1 | The weight |
| 20A | 170 | 535 | 95 | twenty |
| 25A | 170 | 535 | 95 | 22 |
| 32A | 180 | 545 | 100 | 23 |
| 40A | 180 | 545 | 100 | 23 |
| 50A | 180 | 565 | 110 | 26 |
| 65A | 215 | 680 | 125 | 41 |
| 80A | 260 | 705 | 140 | 51 |
| 100A | 300 | 755 | 165 | 66 |
| 125A | 360 | 815 | 195 | 90 |
| 150A | 382 | 885 | 225 | 129 |
The design differs depending on the nominal size.
Diagram of selection of technical characteristics. Nominal size 20A-50A.
Diagram of selection of technical characteristics. Nominal size 65A-150A.
Flow characteristics graph
| Nominal size | Cut-off pressure increase | |
| GD-7B | GD-7BH | |
| 20A-50A | Not more than 10% of the setting pressure | Not more than 15% of the setting pressure |
| 65A-150A | Not more than 15% of the setting pressure | Not more than 15% of the setting pressure |
| Nominal size | Pressure displacement MPa | |
| GD-7B | GD-7BH | |
| 20A-50A | No more than 0.08 | No more than 0.23 |
| 65A-150A | No more than 0.11 | No more than 0.18 |
Nominal sizing diagram (for water)
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
