The following is an analysis of the reasons for the absence of flow in stainless steel metering pumps:
1. When there is no flow in the stainless steel metering pump, first check whether the oil level of the hydraulic chamber of the stainless steel metering pump is normal and whether the oil has deteriorated. If the oil is degraded or lacks oil, add oil to the normal or replace the oil in the hydraulic chamber.
2. Check the safety valve at the outlet. The outlet safety valve of the stainless steel metering pump often has no returning or leaking phenomenon, which causes the pump outlet pressure to rise and no flow. This phenomenon can be solved simply by recalibrating the safety valve.
3. The diaphragm is broken. Check by the pressure of the pressure gauge installed on the pump head. In general, the pressure gauge of the stainless steel metering pump is zero. If there is pressure, the diaphragm may be damaged, and replacing the diaphragm will solve the problem.
4. Check the dual function hydraulic valve of the stainless steel metering pump. This valve's constant pressure will cause leakage, which will affect the pressure in the hydraulic chamber, and the outlet pressure will not rise. This pump has experienced this problem many times during its operation. This valve can be replaced by replacing the valve or by recalibrating the valve.
5. Check the charge valve. The set value of the opening of the charge valve is not allowed, which directly causes the hydraulic oil to enter the hydraulic chamber, resulting in lack of oil in the hydraulic chamber, resulting in no flow. Re-adjust the spring extension of the charge valve.
6. Check the check valve at the entrance and exit. There is a foreign matter in the check valve at the entrance and exit, which will cause the sealing surface to wear, resulting in a poor sealing effect. There is no flow when there is traffic.
7. Check if the inlet filter is clogged. Blockage of the inlet filter can result in low pump suction pressure, resulting in reduced or even no flow.
Add: No.658,20th Avenue,Hangzhou Economic & Technological Development Zone,Hangzhou,Zhejiang,China