Apeks MTX-RC — Uncompromising performance, in all conditions

The Apeks MTX-RC is a high-end balanced regulator, designed and manufactured in the UK for those who accept no compromises underwater. Whether you're exploring wrecks in cold water or diving in tropical environments, the MTX-RC ensures a consistent, smooth, and reliable airflow at any depth.

First Stage

• Forged one-piece body in satin chrome-plated brass for maximum robustness and optimal hose routing.
• Environmental dry kit (standard): the environmental diaphragm prevents water from contacting the main spring, preventing freezing even in extremely cold water.
• Non-freezing end cap: specific technology to prevent ice formation on the first stage end cap.
• Heat exchanger: exclusive design that utilizes the body surface to extract heat from the water and increase the temperature of the breathing gas.
• Swiveling turret with configurable right-to-left orientation: reduces hose tension and allows for customized positioning for maximum comfort.
• Over-balanced: the over-pressure intermediate pressure system ensures superior performance at depth, with constant flow even with a nearly empty tank.
• 5 medium-pressure ports (3/8" UNF) and 2 high-pressure ports (7/16" UNF) angled.
• Removable valve seat: replaceable in case of damage, for simple and convenient maintenance.
• Dust cap to protect the first stage from water and debris during transport.
• Trivalent chrome plating: a more environmentally friendly finish than traditional chrome plating, with no compromise on durability.
• Available in DIN or INT (A-clamp) versions.

Second Stage

• Pneumatically balanced: breathing effort remains constant and low regardless of depth and residual tank pressure.
• Patented Comfo-Bite™ mouthpiece with an ergonomic palatal bridge to reduce jaw fatigue during prolonged dives.
• Cover with metallic insert for greater durability and impact resistance.
• Braided Flexi-hose with double swivel to eliminate tension at both ends and improve comfort during swimming.
• Ergonomic and intuitive Venturi lever, adjustable even with gloves, to stop airflow and prevent free flow.
• Inhalation effort adjustment via an oversized system, easily accessible even in cold water.
• Side opening channels on the diaphragm to prevent free flow even in strong currents.
• Diver Changeable exhaust (DCE): supplied with 1 set, choose between compact version or optimal bubble deflection.
• Integrated heat exchanger for freeze resistance in extreme cold water diving.
• Nitrox compatible: 40% O₂ ready out-of-the-box; can be O₂ cleaned for 100% O₂ use.
• Recommended operating temperature: 1 – 55°C.

Why choose the MTX-RC

Imagine descending 40 meters on a wreck in the North Sea: the water is 8°C, the current is strong, and every breath must be certain. The MTX-RC was designed precisely for this. Every detail — from the dry kit to the swiveling turret, from pneumatic balancing to the Venturi lever — is engineered to give you total control and absolute peace of mind, dive after dive.

Technical Specifications