HOTDIVE
ST4 Technical Dive Regulator Set
$499.00
Set Configuration
Color
Connection
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01. Info
The ST4 is HOTDIVE’s flagship regulator set, pairing a balanced diaphragm first stage with the T4 balanced adjustable second stage. The diaphragm design seals the valve mechanism away from water, silt and contaminants, and the swivel turret gives technical divers clean routing for every hose. On the second stage, a diver-adjustable inhalation control lets you dial the breathe from featherlight in calm water to locked-down in current. Available in silver, black or an eye-catching rainbow finish, the ST4 performs as good as it looks.
02. Features
- Balanced diaphragm first stage — valve mechanism isolated from water and sediment
- Swivel turret with 5 LP ports plus 2 HP ports for clean, flexible hose routing
- Marine-grade SUS 316 stainless steel body and components with stainless steel springs
- T4 balanced adjustable second stage with diver-adjustable inhalation effort
- Smooth, consistent airflow across changing depth and tank pressure
- Three finishes: Silver, Black and Rainbow
03. Configurations
- ST4 — first stage + T4 second stage, with 0.75 m LP braided hose
- ST4O — adds a backup second stage (octopus) on a 0.95 m LP braided hose
- ST4G — adds a submersible pressure gauge on a 0.8 m HP rubber hose