Heavy-Duty Alloy Body - Crafted from premium aluminum alloy, the manual glue pen valve maintains stable fluid output even in harsh working environments (such as soldering or heavy-duty adhesive scenes), ensuring long service life and reliable performance Quick Docking and Anti-Drip - Thimble-type pneumatic glue dispensing valve features a detachable quick-connect interface, enabling fast matching with 4mm nozzles. The firm locking structure avoids detachment, effectively preventing glue spills and drips Precision Dispensing Control - Equipped with a fine-tuning nut, it supports micro-adjustments as precise as 0.01ml and dispensing speed up to 300 times per minute. Compatible with semi-automatic, timer and manual modes, ensuring uniform and stable dispensing Simple Operation - Standardized ports fit most common dispensing equipment. The adjustable nut allows easy and precise glue control, while auto/manual dual options simplify operation, suitable for both labs and workshops Wide Application Range - Ideal for handling 1–100,000 cps viscosity fluids, including sealants, pastes, solder paste and inks. Suitable for electronics, jewelry, hardware manufacturing and stationery production, meeting diverse industrial and workshop needs