Double acting uses air pressure to open and close the valve (fail-safe in last position). Spring return uses air to compress springs; if air fails, the spring moves the valve to a safe position (fail-open or fail-close). Spring return is required for safety-critical applications.

Yes. All our actuators comply with ISO 5211 mounting dimensions and Namur VDI/VDE 3845 accessory interface. They directly mount to most quarter-turn valves and accept standard solenoid valves.

For standard models, MOQ is 10 units. For OEM/ODM custom orders, MOQ is typically 50 units. We can offer sample orders for testing and qualification.

We follow a strict 3-stage QC process: incoming material inspection, in-process testing (torque & pressure), and final functional test. We can also provide third-party inspection (SGS/BV) upon request.

Our standard lead time is 15-25 working days. We have consolidated sea freight to major US ports (Los Angeles, Houston, New York). Shipping costs are transparent, and we help optimize volumes to reduce your freight expenses.

Absolutely. We manufacture with NPT, BSP, or custom thread standards. We understand US piping codes and can adjust the port sizes accordingly.

Standard warranty is 18 months from shipment date. For large-volume or strategic partners, we can negotiate extended warranties up to 36 months. We guarantee workmanship and material defects.

Yes. We are a one-stop automation partner. We can source and integrate solenoid valves, Namur limit switch boxes, positioners, air filter regulators, and mounting brackets. You receive a fully assembled, tested package ready for installation.