Click to enlarge
This series reducing valve mainly composed of valve body, valve seat and valve flap. It adopts the structure of double valve seat and double cone valve flap. It adopts pressure balancing valve flap. Realize remote control and auto control through valve flap elevation to adjust the pressure, ZKZ-BC or other type straight travel electric activator can be equipped. The decompression ratio of this series product is best to be 0.6. The product is mainly applied on steam piping, to reduce and regulate the pressure. It is widely used in combined heat and power generation, spinning, printing and dyeing, petrochemistry and sugar-making industries.
Field of Application.
Product Name: Y945H Electric double seat steam pressure reducing valve.
Pressure Rating: 1.6- 16.0 Mpa.
Nominal Diameter: DN50-500 mm.
Body Material: Steel, CF8.
Standard Flanges: DIN, ANSI, JIS.
Main Technical Parameters and Indexes of Performance.
| Nominal pressure | 1.6 Mpa | 2.5 Mpa | 4.0 Mpa | 6.4 Mpa | 10.0 Mpa | 16.0 Mpa |
| Tested pressure of shell | 2.4 Mpa | 3.75 Mpa | 6.0 Mpa | 9.6 Mpa | 15.0 Mpa | 24.0 Mpa |
| Maximum upstream pressure | 1.6 Mpa | 2.5 Mpa | 4.0 Mpa | 6.4 Mpa | 10.0 Mpa | 16.0 Mpa |
| Pressure range of outlet | Best decompression ratio 0.6 | |||||
| Medium | Steam | |||||
| Temperature-pressure class | ANSI B16.34 | |||||
*the shell test does not include membrane and top cover.
Material of Main Component.
| Name of Component | Material of Component |
| Valve Body, Valve Cover, Seat Cover | WCB |
| Valve Seat | 304 |
| Valve Flap | 2Cr13 |
| Valve Rod | 2Cr13 |
| Gasket | flexible graphite/ 1Cr19Ni9Ti |
| Guide Sleeve | 2Cr13 |
| Filling Stuff | flexible graphite |
| Bolt | 35CrMoA |
| Nut | 45 |
Selection of Electric Actuator and Performance Index.
| DN(mm) | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 500 | ||
| Model | ZKZ-310BC | ZKZ-410BC/ ZKZ-510BC | ZKZ-510BC | ZKZ-610BC/B+Z250/F1800 | ||||||||||
| Travel(mm) | 25 | 30 | 50/30 | 50 | 60 | 100 | ||||||||
| Trust | 4000 | 6400/16000 | 16000 | 25000 | ||||||||||
| Whole Travel Time(S) | 20 | 32 | 37 | 62 | ||||||||||
| Input signal | 4-20Ma DC | |||||||||||||
| Power supply | 220V 50HZ | 380V 50HZ | ||||||||||||
| Basic error(%) | 2.5 | |||||||||||||
| Basic error(%) | 1.5 | |||||||||||||
| Basic error(%) | 3 | |||||||||||||
Main External Dimensions.
 |
| DN | External Dimension | DN | External Dimension | ||||||
| L | L1 | H | H1 | L | L1 | H | H1 | ||
| 50 | 300 | 150 | 880 | 190 | 50 | 300 | 150 | 880 | 200 |
| 65 | 340 | 170 | 890 | 205 | 65 | 340 | 170 | 890 | 215 |
| 80 | 380 | 190 | 910 | 215 | 80 | 380 | 190 | 910 | 225 |
| 100 | 400 | 215 | 950 | 240 | 100 | 400 | 215 | 950 | 250 |
| 125 | 430 | 225 | 990 | 275 | 125 | 430 | 225 | 990 | 285 |
| 150 | 450 | 230 | 1090 | 320 | 150 | 450 | 230 | 1090 | 330 |
| 200 | 500 | 260 | 1160 | 340 | 200 | 500 | 260 | 1160 | 355 |
| 250 | 550 | 285 | 1230 | 370 | 250 | 550 | 285 | 1230 | 390 |
| 300 | 750 | 395 | 1370 | 460 | 300 | 750 | 395 | 1370 | 480 |
| 350 | 850 | 445 | 1450 | 530 | 350 | 850 | 445 | 1450 | 550 |
| 400 | 950 | 550 | 1570 | 660 | 400 | 950 | 550 | 1570 | 700 |
| 500 | 1130 | 680 | 1780 | 800 | 500 | 1130 | 680 | 1780 | 820 |