Product Description

Apeks XTX UST First Stage 

Unsealed system with swivel turret – 4 MP ports, 4 x 3/8 UNF – 2 HP ports, 7/16 UNF



The first stage – the powerhouse of your regulator – reduces the high pressure air stored in your cylinder to a controllable intermediate pressure of about 9 – 10 BAR. The air then flows along the medium pressure hose to the second stage (demand stage). Apeks manufactures a wide range of first stages to meet the needs of every diver. The UST first stage is one of the world’s top unsealed 1st stages with proven performance and reliability.