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. After the fire pump is shut down, the impact of water hammer can be reduced. It is also used to eliminate water hammer in large water supply system. Moreover, a self-cleaning filter screen is installed at the inlet of the valve control system, which makes use of the fluid characteristics to prevent the suspended particles with larger specific gravity and larger diameter from entering the control system, so as to ensure the smooth circulation of the system and ensure the safe and reliable operation of the valve. The system has the advantages of stable operation, high strength and long service life. It is suitable for pipes with diameter less than 600 mm.
1. The valve body adopts full channel and streamline design, with small fluid resistance and large flow rate.
2. The joint of body, cover and piston rod is double sealed by sealing gasket and sealing ring without leakage.
3. Double guide of valve body, piston cylinder and piston ensures stable and reliable movement.
4. All stainless steel piston cylinder, integral casting piston and NBR sealing ring. Perfect combination greatly prolongs service life.
5. The detachable valve seat with advanced technology has ingenious structure, novel conception and convenient maintenance and replacement.
6. For the piston cylinder with guide hole, properly increase the resistance to make the piston movement more stable.
Quality assurance: ISO9000
Design: CJ/T167
Structure length: GB/T12221
Flange standard: GB/T17241.6\API 598 GB/T 9113
Test standard: GB/T13927
Main materials: gray iron, ductile iron, carbon steel
Nominal diameter: DN50~1200mm
Nominal pressure: PN1.0~ 2.5mpa
Applicable temperature: < 80℃
Applicable medium: water and medium with physical and chemical properties similar to water
DN |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
400 |
450 |
L |
150 |
160 |
180 |
200 |
203 |
216 |
241 |
292 |
330 |
356 |
495 |
622 |
698 |
787 |
914 |
978 |
H1 |
463 |
463 |
463 |
516 |
516 |
520 |
537 |
596 |
653 |
709 |
805 |
855 |
953 |
990 |
1030 |
1030 |
H |
557 |
557 |
557 |
610 |
610 |
625 |
642 |
750 |
808 |
864 |
1135 |
1185 |
1325 |
1385 |
1445 |
1445 |