MTNP003931AA SMC Solenoid Valve VQZ1150-5M0 AI Spare Parts

Product Overview

This is a replacement SMC solenoid valve for AI auto-insertion equipment, supplied as a single valve that goes back into the station it came out of. It is the part maintenance teams reach for when the original valve has to be renewed during a planned service or after an unplanned line stop.

Most of these valves are changed as part of a maintenance visit rather than as a repair in its own right, so the work usually happens in a service window with the line down. Having the correct valve on the shelf before that window opens is what keeps the stop short.

As a solenoid valve supplier working with SMT and PCB assembly plants, we check the number against your machine before the valve ships and flag it if something does not line up. Teams that hold a small stock of fast-moving service parts often keep one of these for the positions that fail most often.

Key Features

• SMC valve body from the VQZ series — the same SMC body family as the original, so the replacement follows the mounting and port layout of the valve it replaces.
• Listed for AI equipment — supplied as an AI spare part, which keeps the valve matched to auto-insertion machinery rather than general factory pneumatics.
• One station, one valve — a pneumatic solenoid valve that switches compressed air for the single action it serves, so a stopped station can be brought back by renewing one unit instead of stripping the whole block.

Position in the Air Circuit

On auto-insertion equipment, this air solenoid valve sits on the compressed-air side of the machine. The controller energises it to send air to a cylinder, clamp, feed unit or cutter, and to release that air on the next cycle, so the valve is the point where an electrical signal becomes mechanical movement.

Most lines carry several valves in the same block, and a block can usually be serviced one station at a time. Standalone valves on the same machine work the same way, with tubing running directly to the valve instead of through a manifold.

Air quality upstream has a direct effect on how long any valve lasts. Filter elements, drains and pressure settings in the service unit are worth checking whenever a valve is renewed, because dirt and moisture reaching the seat shorten the life of the replacement.

Part Number Matching

• Read the number off the old valve — valves from different solenoid valve manufacturers can look almost identical from the outside, so work from the markings on the body rather than from appearance.
• Cross-check the machine parts list — the pneumatic section of your machine manual usually lists the same number and shows which station the valve serves.
• Photograph before removal — a clear photo of the body, the connector and the tube routing answers most cross-reference questions if the number is worn or partly hidden.
• Note the station, not just the machine — record the head or block position so the correct valve goes back into the correct slot.
• Check the fittings at the same visit — push-in fittings, tubing and seals wear alongside the valve and are separate solenoid valve parts, so plan them as separate items.

Reference Details

Valve Replacement Procedure

1. Isolate the compressed-air supply at the machine and lock off the isolation point before you open anything.
2. Vent residual pressure through the service unit until the gauge reads zero and the actuators move freely.
3. Photograph the valve and the tubing, then label each tube or connector so the routing goes back as it came off.
4. Release the fixings and lift the valve clear, checking the seal and mounting face for damage as it comes out.
5. Fit the replacement with new seals where the machine builder specifies them, and tighten the fixings evenly rather than forcing them.
6. Restore the air slowly, then cycle the station through a dry run and watch for leaks, a slow stroke or a valve that fails to release.
7. If the fault remains, compare the number on the new valve with the old one, and follow the machine builder's procedure wherever it differs from these steps.

Scale & Supply Capability

ZJ-SMT supplies Panasonic SMT and PCB assembly equipment and spare parts to manufacturers worldwide. Our range covers pick-and-place machines, axial and radial insertion equipment, solder paste inspection systems, and feeder spare parts, with both new and used options available. We support bulk orders, and machine condition and availability are confirmed with you before ordering. Whether you are expanding a line, replacing a worn feeder part, or sourcing equipment for a new project, send us your model numbers and our team will come back with a suitable solution and quotation.

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