Pentair Triton II Side Mount Filter TR60 Fiberglass Sand Filter without Valve Heavy-duty closure provides easy inspection, and features an easy-to-read pressure gauge with air relief valve. (Valve NOT included) Swing-away diffuser allows instant access to sand and all internal parts. All internal parts are threaded for ease of service. Internal air bleed. Combination sand and water drain makes servicing and winterizing fast and easy. Heavy-duty closure provides easy inspection, and features an easy-to-read pressure gauge with air relief valve Swing-away diffuser allows instant access to sand and all internal parts All internal parts are threaded for ease of service Internal air bleed The bulkhead connectors are the two externally threaded ports on the side of the filter. The image shows union connectors on the bulkheads. Those unions are sold separately. Combination sand and water drain makes servicing and winterizing fast and easy Maximum Operating Pressure 50 psi