Description
High temperature pressure reducing regulator DNOVA PRA-S are designed to automatically maintain a given pressure of the working medium after the regulator (before the object of regulation) by changing the flow rate. They do not work in the absence of flow and in dead-end circuits. High temperature pressure reducing regulator DNOVA PRA-S is equipped with an impulse cooler (supplied with the regulator). The impulse cooler is installed between the pipeline and the membrane chamber, to which the impulse tube is connected. Before commissioning, the regulator cooler is filled with water from the side of the membrane chamber. The installation of an impulse cooler is necessary in order to prevent the high temperature coolant from affecting the membrane. The regulator valve is normally open when there is no signal (energy).
Materials and construction of the regulator DNOVA PRA-S PSI 232 class 125 RF cast iron flange connection
| Valve | |
| 1 | Saddle - stainless steel 40x13 |
| 2 | O-ring (discharge chamber seal) |
| 3 | Valve cover - steel 20 |
| 4 | Glass |
| 5 | Sealing - guides-PTFE, gaskets-EPDM |
| 6 | Stem - stainless steel 40x13 |
| 7 | Plate |
| 8 | Plunger - stainless steel 40x13 |
| 9 | Valve body - cast iron |
| Drive | |
| 10 | Diaphragm piston |
| 11 | Membrane - EPDM on fabric backing |
| 12,15 | Cover |
| 13 | Washer |
| 14,16 | socket ( + ), ( - ) |
| 17 | pin |
| Probe | |
| 18,22 | Trigger spring |
| 19 | Washer |
| 20 | Adjustment nut |
| 21 | Stem |
| 23 | Glass |
| 24 | Sealing unit |
Regulator setting range, bar (mpa) DNOVA PRA-S PSI 232 class 125 RF cast iron flange connection
| 0.1 | 0.08…0.9 (0.008…0.09) | Orange spring |
| 1.1 | 0.16…1.8 (0.016…0.18) | Orange spring |
| 1.2 | 0.24…3.0 (0.024…0.30) | Gray spring |
| 1.3 | 0.4…4.8 (0.04…0.48) | Orange spring + Gray spring |
| 2.1 | 0.5…5.8 (0.05…0.58) | Red spring |
| 2.2 | 0.9…10.0 (0.09…1.0) | Yellow spring |
| 2.3 | 1.4…15.8 (0.14…1.58) |
Red spring + Yellow spring |
Wiring diagram DNOVA PRA-S PSI 232 class 125 RF cast iron flange connection
Specifications
Delivery
The cost and delivery time for your order depend on several factors, including the specific product you are ordering, the quantity, and the country of destination. Each product may have different manufacturing lead times and shipping requirements, which can affect the overall delivery schedule.
To get the most accurate and up-to-date information on delivery costs and timelines, we recommend contacting our sales managers. They will be happy to provide you with a detailed quote and estimated delivery time based on your specific requirements.
Please feel free to reach out to us for any questions or further assistance regarding your order.