Answers to common questions about selection, installation, and maintenance
Choosing a solenoid valve model requires considering the following key factors:
1) Media type (water, air, oil, steam, corrosive media, etc.); 2) Working pressure range; 3) Working temperature range; 4) Port size and flow requirements; 5) Power supply voltage (AC220V, DC24V, etc.); 6) Normally open or normally closed type; 7) Protection rating requirements; 8) Connection method (threaded, flanged).
It is recommended to refer to the product technical parameter table for selection based on actual operating conditions, or contact our technical team for professional advice.
Shuntong solenoid valve working pressure ranges vary by model: 2W Series is 0-10bar, ZS Series is 0-8bar, STP Pilot Piston Series is 0.03-1.6MPa, and STTG High Pressure Series can reach 200bar. Please refer to the technical parameter table on each product detail page for specific pressure parameters. Ensure the system working pressure is within the solenoid valve's rated pressure range during selection.
Standard solenoid valves have a working temperature range of -5°C to 80°C. High temperature solenoid valves can reach -5°C to 200°C (with PTFE seals). Ultra-low temperature solenoid valves can go as low as -196°C. The sealing material determines the temperature range: NBR -5°C to 80°C, FKM -10°C to 120°C, PTFE -5°C to 200°C.
Standard solenoid valves have a protection rating of IP54 (dust and splash water resistant). The STDF Underwater Series has a protection rating of IP68, suitable for long-term submerged operation. For outdoor installation, IP65 or above protection rating is recommended. For special protection requirements, please contact us for customization.
Installation notes:
1) The valve body arrow direction must match the media flow direction; 2) Horizontal installation is recommended with the coil facing upward vertically; 3) Coil downward installation is prohibited; 4) Clean the pipeline before installation to remove impurities; 5) Install a filter before the valve (≥80 mesh); 6) Ensure power voltage matches the coil nameplate; 7) Provide proper grounding and waterproofing measures. For detailed installation specifications, please refer to the installation and maintenance manual.
Common faults and troubleshooting methods:
1) Valve cannot open — check power, coil, whether the valve core is stuck, or pressure is too high; 2) Valve does not close tightly — check if the sealing surface is damaged, if there are impurities, or if the spring has failed; 3) Valve leakage — replace seals, repair the valve seat, reinstall; 4) Coil burnout — check if voltage is normal, if it has been energized for extended periods.
It is recommended to establish a regular maintenance system and replace seals in a timely manner.
The service life of solenoid valves depends on operating conditions and maintenance. Pilot piston solenoid valves can achieve a service life of over 1 million cycles. Seal replacement cycle: NBR seals 2-3 years, FKM seals 3-5 years, PTFE seals 5-8 years. Regular maintenance can extend the service life.
Yes, Shuntong offers OEM/ODM customization services. We can customize special voltage, interface dimensions, sealing materials, protection ratings, etc. based on customer requirements. The minimum order quantity varies by product type, typically starting from 500 units. Customization lead time is generally 30-45 days. Please contact our sales team for detailed customization solutions.
Regular products are in stock and ship within 3-5 business days after order placement. Bulk order delivery time is 15-20 business days. Custom product delivery time is 30-45 days. Specific delivery times are subject to contract agreement, and expedited processing is available.
Shuntong solenoid valve products come with a 12-month warranty, calculated from the date of shipment. During the warranty period, failures caused by manufacturing quality issues will be repaired or replaced free of charge. Human damage, improper installation, out-of-range use, etc. are not covered by the warranty.