Description
The differential pressure regulator DNOVA RDT is a normally open regulator, the principle of which is based on balancing the force of elastic deformation of the spring and the force created by the pressure difference of the working medium in the diaphragm chambers of the drive. The RDT direct-acting differential pressure regulator is designed to automatically maintain the differential pressure in the regulated section of the pipeline (between the supply and return pipelines) in the heating, hot water, ventilation circuits in the heating substations of heat supply facilities. The installation of a differential pressure regulator in the ITP prevents water hammer, helps to reduce noise effects on the control valve and increase its service life.
Parameters of pressure regulators ‘differential pressure regulator’ DNOVA PRD1030E-F-DA DN15-150 PN16:
| Regulator type | differential regulator |
| Type of execution | normally open |
| Nominal pressure, bar | 16 |
| Conditional flow capacity Kvs, m3 / h | 0.16 - 280 |
| Connection type | flanged |
| Body material | cast iron |
| Working environment temperature | From 5°C to +150°C |
| Ambient temperature | From -15°C to +50°C |
| Relative humidity | from 30 to 80% |
| Climate performance | U |
| Average product life | 8 years |
Technical characteristics of DNOVA PRD1030E-F-DA regulators DN15-150 PN16:
| DN, mm | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 |
| Conditional flow capacity Kvs, m3 / h |
0.16 0.25 0.4 0.63 1.0 1.6 2.5 3.2 4.0 |
1.6 2.5 4.0 5.0 6.3 |
1.6 2.5 4.0 5.0 6.3 10.0 |
6.3 10.0 16.0 |
10 16 20 25 |
10 16 25 32 40 |
25 40 63 |
40 63 100 |
63 100 125 |
100 125 160 |
160 280 |
| Regulation characteristics | Linear | ||||||||||
| Cavitation onset coefficient, Z | 0.6 | 0.55 | 0.5 | 0.45 | 0.4 | 0.35 | 0.3 | ||||
| Leakage through a closed valve, % | 0.05 Kvs | ||||||||||
Setting ranges of pressure regulators "differential regulator" DNOVA PRD1030E-F-DA DN15-150 PN16:
| Setting range number | Adjustment range of regulation | Pressure, MPa | Color of the spring of the setter | |
| 0 | 0.01 - 0.1 | 0.01 | Grey |  |
| 0.04 | ||||
| 0.1 | ||||
| 1 | 0.04 - 0.16 | 0.04 | Yellow |  |
| 0.1 | ||||
| 0.16 | ||||
| 2 | 0.1 - 0.4 | 0.1 | Red |  |
| 0.16 | ||||
| 0.3 | ||||
| 0.4 | ||||
| 3 | 0.3 - 0.7 | 0.3 | Blue |  |
| 0.4 | ||||
| 0.5 | ||||
| 0.6 | ||||
| 0.7 | ||||
| 4 | 0.6 - 1.2 | 0.6 | Black |  |
| 0.7 | ||||
| 0.8 | ||||
| 0.9 | ||||
| 1.0 | ||||
| 1.1 | ||||
| 1.2 | ||||
Sketch of dimensions of pressure regulators "differential regulator" DNOVA PRD1030E-F-DA DN15-150 PN16
Weight, dimensions and installation parameters of pressure regulators "differential regulator" DNOVA PRD1030E-F-DA DN15-150 PN16:
| DN, mm | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 |
| L, mm | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 |
| H, mm | 583 | 598 | 618 | 638 | 651 | 659 | 676 | 692 | 738 | 770 | 1109 |
| H1, mm | 535 | 545 | 560 | 568 | 576 | 576 | 583 | 592 | 628 | 645 | 966 |
| Weight, kg | 13.6 | 14.1 | 14.9 | 16.6 | 18.6 | 19.1 | 28.6 | 32 | 43.6 | 56.6 | 79.3 |
Mounting holes
| DN, mm | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 |
| Number of holes, pcs | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 8 | 8 | 8 |
| Hole diameter ød, mm | 12 | 12 | 12 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
Sketch of the composition of pressure regulators "differential regulator" DNOVA PRD1030E-F-DA DN15-150 PN16
Materials of pressure regulators "differential regulator" DNOVA PRD1030E-F-DA DN15-150 PN16:
| No. on the diagram | Part name | ||
| Valve I | 1 | Frame | Grey cast iron SCH 20 |
| 2 | Saddle | Steel45, Steel St 20X13, Steel St 40X13 | |
| 3 | Cover with the lower part of the membrane box | Steel 20 | |
| 4 | Piston | Steel45, Steel St 20X13, Steel St 40X13 | |
| 5 | screw | ||
| 6 | |||
| 7 | Guide | ||
| 8 | Pad | ||
| 9 | Block | ||
| Drive II | 10 | The lower part of the membrane box | Steel 20 |
| 11 | Upper part of the membrane box | Steel 20 | |
| 12 | Nipple "+" | ||
| 13 | Union "-" | ||
| 14 | Pin | ||
| 15 | screw | Steel20 | |
| 16 | Washer | ||
| 17 | Diaphragm piston | Steel 20 | |
| 18 | Membrane | Steel 20 | |
| 19 | Washer | ||
| 20 | Rod seal (sealing element assembly) | Rubber-fluoroplastic | |
| 21 | Stock | Steel 40X13, 95X18 | |
| 22 | Pad | ||
| Setter III | 23 | Pad | |
| 24 | Cap nut | ||
| 25 | Pin | ||
| 26 | Retaining ring | ||
| 27 | Pipe | ||
| 28 | Spring retainer | Steel 60S2A | |
| 29 | Top plate | ||
| 30 | Bottom plate | ||
| 31 | Connecting node | ||
| 32 | Spring | Steel 60S2A | |
| 33 | Hook bushing | ||
| 34 | Adjusting screw | Steel45 | |
| 35 | Locking screw | ||
| 36 | Plate | ||
| 37 | screw | ||
| 38 | Rack |
Specifications
Delivery
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