In detail
What it is made of
How it works
Spring-loaded relief valve
The number that matters
Nominal pressure
16bar
The pressure class of the valve body at 20 °C. Working limits depend on the medium and its temperature.
Construction
Parts and materials
Applications
Media and industries
- Water
- Air
- Steam
- Heating Systems
- Water Supply
- Oil And Gas Industry
A spring safety valve is a device used to automatically reduce excess pressure in systems, preventing it from exceeding established safety limits. It consists of a valve, a spring, and a setting that determines the valve's opening pressure.
When the pressure in the system reaches a certain level, the spring activates, opening the valve and allowing excess pressure to escape, preventing damage to equipment or the system due to overpressure. Spring safety valves are widely used in various industrial and technical systems to ensure their safety and reliability.
Technical data of safety valves DNOVA VR3430M-F DN25x32/300x400 PN16
| Nominal diameter DN, mm |
25-300 (inlet); 32-400 (outlet) |
| Working pressure PN, bar | 16 |
| Setting pressure ranges, bar |
0.6÷1; 1÷1.6; 1.6÷2.5; 2.5÷4; 4÷6; 6÷8; 8÷10; 10÷13; 13÷16 |
| Allowable pressure behind the valve, bar | 16 |
| Temperature of working environment t, °C | ≤300 |
| Working environment | water, steam, air |
| Connection to the pipeline | flanged |
| Body material | WCB steel |
| Seal material | steel 20X13 |
| Application areas | heating and water supply systems; compressed air pipelines; steam plants; industrial pipelines |
Sketch of dimensions of safety valves DNOVA VR3430M-F DN25x32/300x400 PN16
Weight and dimensions of safety valves DNOVA VR3430M-F DN25x32/300x400 PN16
| D.N. | ØD1, mm | ØD2, mm | ØD3, mm | b, mm | f, mm | n-Ød, mm | L, mm |
| 25 | 115 | 85 | 65 | 14 | 2 | 4-14 | 110 |
| 32 | 140 | 100 | 78 | 16 | 2 | 4-18 | 115 |
| 40 | 150 | 110 | 85 | 16 | 3 | 4-18 | 120 |
| 50 | 165 | 125 | 100 | 16 | 3 | 4-18 | 135 |
| 65 | 185 | 145 | 120 | 18 | 3 | 4-18 | 160 |
| 80 | 200 | 160 | 135 | 20 | 3 | 8-18 | 170 |
| 100 | 220 | 180 | 155 | 20 | 3 | 8-18 | 195 |
| 125 | 250 | 210 | 185 | 22 | 3 | 8-18 | 210 |
| 150 | 285 | 240 | 210 | 24 | 3 | 8-23 | 255 |
| 200 | 340 | 295 | 265 | 26 | 3 | 12-23 | 300 |
| 250 | 405 | 355 | 320 | 30 | 3 | 12-26 | 350 |
| 300 | 460 | 410 | 375 | 30 | 4 | 12-26 | 380 |
| DN ' | ØD1', mm | ØD2', mm | ØD3', mm | b ', mm | f ', mm | n-Ød ', mm | L1, mm |
| 32 | 140 | 100 | 78 | 16 | 2 | 4-18 | 95 |
| 40 | 150 | 110 | 85 | 16 | 3 | 4-18 | 100 |
| 50 | 165 | 125 | 100 | 16 | 3 | 4-18 | 110 |
| 65 | 185 | 145 | 120 | 18 | 3 | 4-18 | 120 |
| 80 | 200 | 160 | 135 | 20 | 3 | 8-18 | 135 |
| 100 | 220 | 180 | 155 | 20 | 3 | 8-18 | 135 |
| 125 | 250 | 210 | 185 | 22 | 3 | 8-18 | 175 |
| 150 | 285 | 240 | 210 | 24 | 3 | 8-23 | 190 |
| 200 | 340 | 295 | 265 | 26 | 3 | 12-23 | 230 |
| 250 | 405 | 355 | 320 | 30 | 3 | 12-26 | 260 |
| 300 | 460 | 410 | 375 | 30 | 4 | 12-26 | 320 |
| 400 | 580 | 525 | 485 | 36 | 4 | 16-30 | 350 |
| DN - DN' | H, mm | Area of the flow channel, mm2 | Weight, kg |
| 25-32 | 315 | 177 | 11 |
| 32-40 | 315 | 314 | 13 |
| 40-50 | 325 | 491 | 15 |
| 50-65 | 335 | 804 | 20 |
| 65-80 | 420 | 1256 | 30 |
| 80-100 | 435 | 1963 | 32 |
| 100-125 | 565 | 3317 | 60 |
| 125-150 | 640 | 5024 | 75 |
| 150-200 | 665 | 7850 | 90 |
| 200-250 | 800 | 12266 | 160 |
| 250-300 | 975 | 17663 | 360 |
| 300-400 | 1170 | 24041 | 630 |
Sketch of detailing of safety valves DNOVA VR3430M-F DN25x32/300x400 PN16
Materials of parts of safety valves DNOVA VR3430M-F DN25x32/300x400 PN16
| Item No. | Part name | Material |
| 1 | Frame | WCB steel |
| 2 | Adjusting screw | steel 20X13 |
| 3 | Disk | steel 20X13 |
| 4 | Guide bushing | steel 20X13 |
| 5 | Lid | WCB steel |
| 6 | Spring | steel 50KhFA |
| 7 | Lever | steel 20X13 |
- Body material
- Stainless steel WCB
- Maximum allowable temperature
- 300 °C
- Connection type
- Flanged
- Operating environment
- Water, Air, and Steam
- Applications
- Heating Systems, Water Supply, and Oil And Gas Industry
- Nominal pressure
- 16 bar
- Type of seal
- Metal
- Locking material
- Stainless steel AISI 420/1.4031
- Country of origin
- China
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.
Total items
Product subtotal