Basic Info.
Temperature
High Temperature
Transport Package
Wooden Cases
Product Description
500X pressure relief/holding valve is mainly used in fire fighting or other water supply systems to prevent system overpressure or maintain the pressure of fire water supply system. When the fire pump is closed, the impact of water hammer can also be reduced. It is also used in water hammer device of large water supply system. The inlet of the valve control system is equipped with a clean filter. By utilizing the fluid characteristics, the suspended particles with larger proportion and diameter will not enter the control system to ensure the smooth circulation of the system and the safe and reliable operation of the valve. The system operates smoothly, has high strength and long service life.
Structural features and Applications
500X pressure relief/holding valve consists of main valve, pressure relief/holding guide valve needle valve, ball valve, micro filter and pressure gauge. Hydraulic automatic operation can be used as pressure relief valve and pressure holding valve. When used as relief valve, the water supply pressure can be maintained below the set safety value; when used as pressure holding valve, the upstream water pressure of the main valve can be maintained above the set value and the upstream water supply pressure of the main valve can be maintained.
This product uses hydraulic self-control, does not need other devices and energy, easy maintenance, multi-purpose valve.
This series of valve products are widely used in high-rise buildings, living areas and other water supply network systems and urban water supply projects.
Working principle
1. As relief valve: When relief/holding guide valve is adjusted to relief state, water flows to outlet through needle valve, main valve control room, ball valve A, relief/holding guide valve and ball valve B. At this time, the main valve is in open state. When the inlet pressure exceeds the safety value set by the relief/holding guide valve, the relief guide valve will automatically open and release part of the water through the ball valve C to relieve the pressure of the pipeline. When the pressure is restored to safety value, the relief valve closes automatically. When working as relief valve, the ball valves are usually open.
2. As a pressure-holding valve: When the pressure relief/pressure-holding guide valve is adjusted to the pressure-holding state, as long as the inlet water pressure of the main valve is lower than the set value of the guide valve, the guide valve will be closed. The main control room is pressurized and the main valve is closed. When the upstream water supply pressure of the main valve exceeds the set pressure of the pilot valve, the pressure-holding pilot valve can be opened. The water in the control room is discharged through the ball valve to the outlet. The pressure-reducing main valve in the control room opens and begins to supply water, that is to say, the upstream water pressure is maintained. When used as pressure holding valve, ball valve C is usually closed or replaced with wire plug.
Main technical parameters
Nominal pressure(Mpa) | Shell pressure test(MPa) | Seal pressure test(MPa) | Applicative medium | Medium temperature(ºC) |
1.0 | 1.5 | 1.1 | Water | 0-80 |
1.6 | 2.4 | 1.76 |
2.5 | 3.75 | 2.75 |
Major Parts Materials
Part name | Part Material |
Body,Bonnet | WCB |
Seat,Valve disc | Copper alloy |
Seal ring O-typed ring | Nitrile butadiene rubber |
Stem | 2Cr13 |
Spring | 50CrVA |
Needle valve | Copper alloy |
Ball valve | Copper alloy |
Floating ball valve | Copper alloy |
miniature Filter | Stainless steel |
Part List:
1. Guide Valve 2, Needle Valve 3, Ball Valve 4, Main Valve 5, Pressure Gauge
Main Shape Connection Dimensions
DN | L | A | A1 | H | H1 | F | D mm | D1 mm | D2 mm | n-Φd |
mm | mm | mm | mm | mm | mm | PN1.0 | PN1.6 | PN2.5 | PN1.0 | PN1.6 | PN2.5 | PN1.0 | PN1.6 | PN2.5 | PN1.0 | PN1.6 | PN2.5 |
20 | 180 | 330 | 130 | 550 | 460 | 116 | 105 | 105 | 105 | 75 | 75 | 75 | 58 | 58 | 56 | 4-13.5 | 4-13.5 | 4-14 |
25 | 180 | 330 | 130 | 550 | 460 | 116 | 115 | 115 | 115 | 85 | 85 | 85 | 68 | 68 | 65 | 4-13.5 | 4-13.5 | 4-14 |
32 | 180 | 330 | 130 | 550 | 460 | 116 | 140 | 140 | 140 | 100 | 100 | 100 | 78 | 78 | 76 | 4-17.5 | 4-17.5 | 4-18 |
40 | 240 | 345 | 135 | 610 | 516 | 170 | 150 | 150 | 150 | 110 | 110 | 110 | 88 | 88 | 84 | 4-17.5 | 4-17.5 | 4-18 |
50 | 240 | 345 | 135 | 610 | 516 | 170 | 165 | 165 | 165 | 125 | 125 | 125 | 102 | 102 | 99 | 4-17.5 | 4-17.5 | 4-18 |
65 | 250 | 355 | 140 | 625 | 520 | 180 | 185 | 185 | 185 | 145 | 145 | 145 | 122 | 122 | 118 | 4-17.5 | 4-17.5 | 8-18 |
80 | 285 | 360 | 146 | 645 | 538 | 210 | 200 | 200 | 200 | 160 | 160 | 160 | 133 | 133 | 132 | 8-17.5 | 8-17.5 | 8-18 |
100 | 360 | 400 | 156 | 750 | 596 | 275 | 220 | 220 | 235 | 180 | 180 | 190 | 158 | 158 | 156 | 8-17.5 | 8-17.5 | 8-22 |
125 | 400 | 420 | 170 | 808 | 655 | 310 | 250 | 250 | 270 | 210 | 210 | 220 | 184 | 184 | 184 | 8-17.5 | 8-17.5 | 8-26 |
150 | 455 | 435 | 186 | 864 | 710 | 355 | 285 | 285 | 300 | 240 | 240 | 250 | 212 | 212 | 211 | 8-22 | 8-22 | 8-26 |
200 | 585 | 480 | 206 | 1135 | 805 | 460 | 340 | 340 | 360 | 295 | 295 | 310 | 268 | 268 | 274 | 8-22 | 12-22 | 12-26 |
250 | 650 | 530 | 226 | 1185 | 855 | 500 | 395 | 405 | 425 | 350 | 355 | 370 | 320 | 320 | 330 | 12-22 | 12-26 | 12-30 |
300 | 800 | 575 | 246 | 1325 | 955 | 580 | 445 | 460 | 485 | 400 | 410 | 430 | 370 | 370 | 389 | 12-22 | 12-26 | 16-30 |
350 | 860 | 620 | 275 | 1385 | 990 | 640 | 505 | 520 | 555 | 460 | 470 | 490 | 430 | 430 | 448 | 16-22 | 16-26 | 16-33 |
400 | 960 | 635 | 286 | 1445 | 1030 | 715 | 565 | 580 | 620 | 515 | 525 | 550 | 482 | 482 | 503 | 16-26 | 16-30 | 16-36 |
450 | 1075 | 665 | 320 | 1325 | 905 | 780 | 615 | 640 | 670 | 565 | 585 | 600 | 532 | 550 | 548 | 20-26 | 20-30 | 20-36 |
500 | 1075 | 695 | 348 | 1430 | 960 | 830 | 670 | 715 | 730 | 620 | 650 | 660 | 585 | 585 | 609 | 20-26 | 20-33 | 20-36 |
600 | 1230 | 720 | 372 | 1565 | 1020 | 920 | 780 | 840 | 845 | 725 | 770 | 770 | 685 | 685 | 720 | 20-30 | 20-36 | 20-39 |
700 | 1650 | 770 | 422 | 1755 | 1160 | 980 | 895 | 910 | 960 | 840 | 840 | 875 | 800 | 800 | 820 | 24-30 | 24-36 | 24-42 |
800 | 1750 | 805 | 458 | 2230 | 1515 | 1050 | 1015 | 1025 | 1085 | 950 | 950 | 990 | 905 | 905 | 928 | 24-33 | 24-39 | 24-48 |
installation diagram
Address:
Yuxiang Street, Wangjiazhuang Village, Luancheng District, Shijiazhuang
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Industrial Equipment & Components
Company Introduction:
Our company is specialized in different kinds of products. We stick to the principle of "quality first, service first, continuous improvement and innovation to meet the customers" for the management and "zero defect, zero complaints" as the quality objective. To perfect our service, we make our products with good quality at the reasonable price.