Posted in Web Connector Specialists. Connect Under Pressure, High Flow Quick … June 19, 2026 Parker’s low spill thread to connect couplers and nipples, wing nut or hex nut style, are ideal for use in applications where a high flow flush valve and connect under pressure is needed. https://www.connectorspecialists.com/connect-under-pressure-high-flow-quick-couplings-6100-series-6105-16