Koolance COV-TKTOP Reservoir Top with Fill Port (60mm OD) Acetal reservoir top for Koolance 60mm OD reservoir bodies. Nickel-plated brass, G 1/4 BSPP (parallel) thread top fill port. Hex mounting nut and insulating washer included. Additional Specifications &bullet; Max Temperature: 80&deg;C (176&deg;F) &bullet; Max Pressure @ 25&deg;C: 2kgf/cm2 (28.5psi).