A solenoid valve bank is a critical component within a Pressure Testing Unit that consolidates multiple solenoid valves into a single manifold or assembly. It functions as the central control point for directing, isolating, or sequencing fluid flow (typically hydraulic oil, water, or air) to various test circuits, actuators, or pressure chambers during testing operations. The bank is designed to handle multiple stations, typically 4 to 12, each with a port size ranging from G1/4 to G1/2 per ISO 228-1. Operating pressure is specified between 1.0 and 1.6 MPa, with a note that Flow rate (Cv) ranges from 0.5 to 2.5, and response time from 10 to 30 ms. Coil voltage is 24 V DC ±10% per IEC 60038, with power consumption per coil between 4.8 and 8.5 W. The IP rating is IP54 to IP65 per IEC 60529, suitable for dusty or wet environments. Ambient temperature range is -20 to 60 °C, and media temperature range is -10 to 80 °C for water, oil, or air. Body material is 316L stainless steel per ASTM A240, and seal material is FKM per ASTM D2000. Weight ranges from 8 to 25 kg, and dimensions for an 8-station unit are 400×200×150 mm (L×W×H). Materials on file include stainless steel, brass, engineering plastics (e.g., POM, PTFE), and elastomer seals (e.g., NBR, FKM). The valve bank receives electrical signals from the unit's control system, and each solenoid valve actuates when its coil is energized, shifting a spool or poppet to open or close a specific fluid port. This enables precise, automated control over pressurization, venting, or isolation of test circuits. For selection, verify the number of stations, port size, pressure rating, flow coefficient, response time, coil voltage, power consumption, IP rating, temperature ranges, and material compatibility with the actual application. Always confirm model-specific values and standards with the legal manufacturer or supplier, as the listed ranges are directory references and not guarantees of compliance.
The valve bank receives electrical signals from the unit's control system. Each solenoid valve within the bank actuates when its corresponding coil is energized, shifting a spool or poppet to open or close a specific fluid port. This allows for precise, automated control over which sections of the pressure testing circuit are pressurized, vented, or isolated, enabling complex test sequences. The manifold integrates multiple valves to reduce piping and centralize control. Selection requires matching the number of stations to the circuits, port size to system piping, and pressure rating to the test requirements. Verification should include checking coil voltage, power consumption, and response time against the control system. Maintenance signals include erratic actuation, leakage, or slow response, indicating worn seals or coil failure. Operational boundaries are defined by the specified pressure, temperature, and media compatibility; exceeding these may cause seat leakage or seal degradation.
