O'Keefe Controls Fixed Flow Rate Orifice This O'Keefe Controls fixed flow rate orifice delivers consistent 3.00 GPM flow regulation with 1/2 inch NPT connections. Designed for industrial and commercial hydraulic systems requiring precise flow control, this compact unit maintains reliable performance in demanding applications. Key Features Fixed flow rate: 3.00 GPM 1/2 inch NPT threaded connections Compact, space-saving design Precision-engineered for consistent performance Industrial-grade construction Specifications Ideal for hydraulic systems, manufacturing equipment, and fluid power applications. Contact with any questions.