Chrome plated brass body with fine workmanship for seawater resistance and durable, reliable performance. Includes O ring seals for wear resistance and a strong threaded connection to ensure a tight air seal. K valve repair tools can be used to easily disassemble old spools and replace with new spools, saving replacement costs. Careful welding and precise hole positions deliver consistent function and high stability in operation. Key benefits - Corrosion resistance in marine and harsh environments - Leak-tight, secure connections with wear‑resistant seals - Cost savings through easy spool replacement - Stable, reliable performance thanks to precision manufacturing Recommended applications - Shipboard or offshore equipment where seawater exposure occurs - Industrial water handling and plumbing systems requiring durable seals - Maintenance of K valve assemblies in marine or rugged environments