DIR Regulator Set – R4 1st Stage + TEC1 2nd Stage + Pressure Gauge

Complete twinset configuration compliant with DIR standards, featuring two monolithic diaphragm first stages with pre-oriented ports, adjustable second stages, a technical metal gauge, and an accessory kit.

The Tecline R4 TEC1 Regulator Set + SPG DIR Set, available on DIR-STORE, is the ultimate ready-to-use technical package for optimal twinset management. This kit not only includes the main and backup breathing groups configured according to the DIR (Doing It Right) philosophy but also integrates the pressure control system (SPG) with a professional diving pressure gauge. Based on robust R4 monolithic first stages with fixed angled ports, it ensures hose routing perfectly parallel to the cylinders, reducing bulk behind the neck and eliminating moving parts. Certified according to the stringent European standard EN250A, it is designed for the most demanding technical, cave, and ice diving.

Technical Features:

• Dual R4 TEC First Stage (Monolithic and Anti-Freeze Design): Constructed from high-quality chrome-plated marine bronze, the R4 first stages utilize a balanced diaphragm mechanism assisted by a sealed dry chamber. This system completely isolates the internal springs from ice, mud, and sediment. The fixed, angled radial port arrangement allows twinset hoses to run smoothly and parallel along the BC's profile, drastically reducing the risk of entanglement. Each first stage offers 4 LP and 2 HP ports.
• Dual TEC1 Second Stage (Smooth and Stable Delivery): The two pneumatically balanced second stages instantly compensate for depth and tank pressure variations, minimizing inhalation effort. The shock-resistant technopolymer casing is protected by a sturdy aluminum perimeter ring, and the classic design ensures extremely simple field maintenance.
• Technical SPG 52 mm Metal Gauge: The set includes a high-precision diving pressure gauge with a chrome-plated brass case, tempered glass, and a luminous, easy-to-read dial. It is paired with a black high-pressure (HP) hose with customizable length (0.57 m, 0.60 m, or 0.65 m).
• Anti-Free-Flow Control and Safety: Both second stages integrate a lever for Venturi effect adjustment (essential to prevent accidental free-flow of the neck-positioned backup regulator) and a micrometric knob to calibrate breathing effort. A dedicated metallic heat exchanger counteracts ice formation on the hose.
• Custom DIR Style Hose Geometry: The included LP hoses faithfully follow the technical standard: a long hose (1.93 m, 2.00 m, or 2.10 m) for the primary second stage (the donor) and a short 0.61 m hose for the neck-mounted backup.

Set Contents:

• 2x Tecline R4 TEC DIN 300 Bar First Stages (with dry chamber kit)
• 2x Tecline TEC1 Second Stages (Black Cover)
• 1x 52 mm Metal Pressure Gauge (SPG)
• 1x HP Hose for pressure gauge (length chosen from 0.57 m / 0.60 m / 0.65 m)
• 1x LP Hose for primary regulator (length chosen from 1.93 m / 2.00 m / 2.10 m)
• 1x Short 0.61 m LP Hose for backup regulator
• 2x 88 mm Stainless Steel Snap Hooks (one for attaching the long hose to the right D-ring, one for the pressure gauge to the left D-ring of the waist strap)
• 1x Elastic Bungee Necklace (for fixed positioning of the backup under the chin)
• 1x Original Tecline compact case/bag for kit protection and transport