New valve design,it can resistance damage from high flow and the pressure of impulse that providing advanced performance. Special nipple design for connecting under pressure,allows connection and disconnection with high residual pressures. The HTC-VEP series employs a threaded sleeve locking mechanism,mates with matching male threads on the coupler, The two halves must be manually threaded together from connection. New chrome plating treatment provides advanced anti-rust performance . HTC-VEP series couplings employ flush valving when connecting or disconnecting,This means that the valves are mated togethet so that only small amounts of fluid can be lost during disconnecting or air inclusion during reconnection. This Anti-Blowout BFT bonded seal is designed to prevent blow-out or damage during severe service conditions. Machined form solid steel barstock for durability Compatible with STUCCHI VEP Series.