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500X Pressure Relief / Holding Valve

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500X Pressure Relief / Holding Valve

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500X Pressure Relief / Holding Valve
500X pressure relief / hold pressure valve consists of main valve and external control pilot valve. The 500X pressure relief / hold pressure valve is mainly installed in the bypass of the protected water supply system of the building to ensure the pressure in the water supply area upstream of the main valve. When the pressure in the water supply pipe exceeds the pressure set by the 500X pressure relief / hold pressure valve, the 500X pressure relief The pressure / holding valve is opened to prevent pipelines and equipment from being damaged by overpressure. 500X pressure relief / hold pressure valve is mainly used for pressure relief of high-rise building fire test cycle system, and it is an upgraded product of spring-loaded safety valve.
Performance characteristics of water control valve:
◆ New and reasonable structure, reasonable use of hydraulic theory of control theory ◆ High sensitivity, safe pressure relief ◆ Quick opening and closing of valve flaps, no water hammer impact ◆ Smooth operation and no noise ◆ Long service life Structure size:

DN (mm)
L (mm) H (mm) H (mm) (KG)
50 234 98 320 18
65 240 115 410 twenty two
80 285 131 430 30
100 325 145 480 55
125 345 160 535 70
150 395 185 600 80
200 470 160 675 110
250 575 180 720 210
300 640 200 820 300
350 645 225 860 380
400 970 750 950 350

Installation requirements:
◆ A filter must be installed before the 500X pressure relief / holding valve.
◆ When adjusting, the screw on the pilot valve should be withdrawn, start the pump to let the water drain from the pressure relief valve, and gradually screw in the adjusting screw to gradually increase the pressure. Until the desired pressure is set. After setting, tighten the lock nut.
Possible faults and troubleshooting methods:

Failure phenomenon
cause of issue Method of exclusion
No pressure release or unstable pressure release
● The pilot spool is stuck. ● The direction of the water inlet and outlet is reversed. ● The pressure is not adjusted.
● Remove and adjust ● Adjust it over ● Adjust the pilot valve adjusting screw
Not holding pressure
● Debris in main valve body ● Main valve diaphragm is damaged ● Improper pressure adjustment
● Remove debris ● Replace the main valve diaphragm ● Readjust the adjusting screw
There is abnormal sound
● There is debris in the main valve body ● The needle valve is too large
● Remove impurities ● Adjust the needle valve

If you have any enquiry about quotation or cooperation, please feel free to email us at kvc@vip.163.com or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.

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