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RP-1H-GVPR11 Pilot Operate Steam Pressure Reducing Valve
Brief Introduction.
This series reducing valve is pilot piston type reducing valve, mainly composed of main valve and pilot valve. The main valve consists of valve seat, main valve disc, piston, cylinder sleeve, and spring. The piston valve consists of valve seat, valve flap, membrane, spring and adjusting spring. The product made big improvement on the basis of normal pressure reducing valve, enlarge the piston area, change the throttle structure, change the sealing manner, improve the pilot structure and manner of adjusting spring, thus to improve the performance of the product in aspects of sensitivity, flow, and service life. The product is mainly applied on steam piping, to reduce and regulate the pressure.
Field of Application.
Product Name: RP-1H-GVPR11 Pilot Operate Steam Pressure Reducing Valve.
Pressure Rating: 1.6- 16.0 Mpa.
Nominal Diameter: DN15-500 mm.
Body Material: Steel, CF8.
Standard Flanges: DIN, ANSI, JIS.
Main Technical Parameters and Indexes of Performance.
| Nominal pressure | 1.6Mpa | 2.5Mpa | 4.0Mpa | 6.4Mpa | 10.0Mpa | 16.0Mpa |
| Tested pressure of shell | 2.4Mpa | 3.75Mpa | 6.0Mpa | 9.6Mpa | 15.0Mpa | 24.0Mpa |
| Sealing test pressure | 1.6Mpa | 2.5Mpa | 4.0Mpa | 6.4Mpa | 10.0Mpa | 16.0Mpa |
| Maximum upstream pressure | 1.6Mpa | 2.5Mpa | 4.0Mpa | 6.4Mpa | 10.0Mpa | 16.0Mpa |
| Pressure range of outlet | 0.04-1.0Mpa | 0.05-1.6Mpa | 0.08-2.5Mpa | 0.2-3.5Mpa | 0.5-3.5Mpa | 0.5-4.5Mpa |
| Minimum differential pressure | 0.07Mpa | 0.1Mpa | 0.15Mpa | 0.3Mpa | 0.5Mpa | 0.8Mpa |
| Medium | Steam | |||||
| Operating temperature | 425 | |||||
*the shell test does not include membrane and top cover.
Flow Characteristics.
| DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 500 |
| Cv | 1 | 2.5 | 4 | 6.5 | 9 | 16 | 25 | 36 | 64 | 100 | 140 | 250 |
Material of Main Component.
| Name of Component | Material of Component |
| Valve Body, Valve Cover, Seat Cover | WCB |
| Valve Seat, Valve Flap | 2Cr13 |
| Cylinder Sleeve, Piston | Ampco |
| Membrane | PH15-7Mo |
| Piston Ring | Polyphenyl |
| Pilot Valve Seat, Pilot Valve Rod | 2Cr13 |
| Spring of Main Valve | 50CrVA |
| Main Spring of Pilot Valve | 50CrVA |
| Adjusting Spring | 60Si2Mn |
Main External Dimensions.
 |
| DN | External Dimension | DN | External Dimension | ||||||
| L | H | H1 | H | H1 | |||||
| 1.6/2.5 Mpa | 4.0 Mpa | 6.4 Mpa | 10.0/16.0 Mpa | ||||||
| 15 | 160 | 180 | 265 | 85 | 15 | 180 | 180 | 280 | 100 |
| 20 | 160 | 180 | 265 | 85 | 20 | 180 | 200 | 280 | 100 |
| 25 | 180 | 200 | 280 | 95 | 25 | 200 | 220 | 300 | 115 |
| 32 | 200 | 220 | 280 | 95 | 32 | 220 | 230 | 300 | 115 |
| 40 | 220 | 240 | 290 | 105 | 40 | 240 | 240 | 315 | 130 |
| 50 | 250 | 270 | 300 | 130 | 50 | 270 | 300 | 340 | 135 |
| 65 | 280 | 300 | 315 | 145 | 65 | 300 | 340 | 355 | 150 |
| 80 | 310 | 330 | 330 | 170 | 80 | 330 | 360 | 370 | 175 |
| 100 | 350/320 | 380 | 405 | 200 | 100 | 380 | 450 | 205 | |
| 125 | 400 /380 | 450 | 450 | 225 | 125 | 450 | 510 | 235 | |
| 150 | 450 /420 | 500 | 485 | 265 | 150 | 500 | 555 | 275 | |
| 200 | 500 /540 | 550 | 570 | 290 | 200 | 550 | 640 | 300 | |
| 250 | 650 | 640 | 325 | 250 | 650 | 720 | 335 | ||
| 300 | 800 | 740 | 360 | 300 | 800 | 830 | 375 | ||
| 350 | 850 | 810 | 395 | 350 | 850 | 880 | 410 | ||
| 400 | 900 | 950 | 430 | 400 | 900 | 1020 | 445 | ||
| 500 | 950 | 1080 | 500 | 500 | 950 | 1080 | 515 | ||