Key benefits Reliable sealing: O‑shaped rubber rings provide wear resistance and strong air tightness to prevent leaks under pressure. Long service life: chrome‑plated brass construction resists corrosion from seawater and general wear, reducing replacement frequency. Stable, precise performance: careful welding and precise hole positions ensure consistent function, accurate fit and reliable operation. Cost saving maintenance: designed for use with K‑valves repair tools to quickly disassemble old spools and install new spools, lowering repair time and parts cost. What it does Provides a durable, leak‑resistant connection for K‑valve spool assemblies through strong threaded joints and tight seals. Maintains stable flow and function thanks to accurate machining and complete, well‑executed welds. Withstands saltwater exposure and routine wear due to chrome‑plated brass workmanship and quality rubber O‑rings. Compatibility and materials Material: chrome‑plated brass body with O‑shaped rubber sealing rings. Designed for use with K‑valves and compatible spool components; intended to be serviced with K‑valves repair tools. Key attributes: wear‑resistant seals, strong threaded connection, precise hole positions, seawater resistance and stable mechanical performance. Practical use scenarios Marine valve maintenance: replace worn spools on boat or offshore valve assemblies exposed to saltwater without replacing entire valve bodies. Pneumatic or hydraulic service: restore airtight performance on K‑valve systems in workshops or industrial equipment by swapping damaged spools. Routine equipment overhaul: use with K‑valves repair tools during scheduled maintenance to cut downtime and reduce replacement costs. Why choose this component Engineered for durability and precision to maintain airtight performance and resist seawater corrosion. Simplifies repairs: compatible with K‑valves repair tools so you can replace spools quickly and economically. Stable, reliable operation thanks to precise hole alignment, careful welding and quality materials.