DEFV series is a push-to-connect flow control valve elbow made with nickel-plated threads and a stem with a PBT body. Standard controls flow out but checks the flow back. Also, these valves needle the flow from the tube and check the flow back through the tubing line. They are equipped with a single push-to-connect port at a 90º angle to the male thread. Furthermore, thread sizes are 10-32, 1/8", 1/4", 3/8" and 1/2".