Streamline your technical equipment profile and achieve flawless hose presentation. The Apeks 5th Port Upgrade Kit is a highly sought-after modification engineered specifically for the versatile Apeks DST (Dry Sealed Turret) first stage regulator.

By introducing an axial low-pressure port directly into the center line of the swivel turret, this kit transforms your first stage into an even more capable life-support component. It provides the ideal overhead geometry demanded by advanced backmount twinsets, complex sidemount configurations, and standard DIR long-hose systems. We manage secure transaction processing and provide fast, reliable shipping on all technical regulator parts right to your door, anywhere in Canada!

Technical Performance Features & System Application

• Axial Low-Pressure Porting: Adds a centralized 5th Low-Pressure (3/8-24 UNF) port onto the crown of the revolving swivel turret, allowing hoses to route directly straight out parallel to the cylinder, eliminating twisting strains.
• Strict First Stage Compatibility: Engineered exclusively to interface with genuine Apeks DST balanced diaphragm first stages, commonly found paired with premium XTX50 and XTX40 regulator systems.
• Optimized Configuration Profiles: Widely preferred by technical divers for stage bottles, decompression links, bailout systems, and twinset backplates to significantly decrease profile bulk and eliminate dangling line hazards.
• Premium UK Manufacturing: Precision-machined at Apeks’ state-of-the-art facility in the United Kingdom using marine-grade chrome-plated brass to guarantee flawless threading and complete burst resilience.

Professional Service & Installation Requirements

Because a first stage regulator acts as critical life-support infrastructure, structural modifications must never be performed casually. Installing this 5th port upgrade involves completely replacing the original turret top cap and fitting fresh, static rubber O-rings to ensure a perfect gas-tight high-pressure seal.

This procedure requires specialized bench tools, hex spanners, and precise intermediate technical training. To guarantee proper function, safety alignment, and validation of your equipment, this modification should be performed exclusively by an authorised Apeks service technician.

Authorized In-House Installation Support & Free Shipping Across Canada

When you buy tech gear through International Diving Centre, you gain access to one of the country's most experienced maintenance benches. Our master service technician has been diving for over 35 years and servicing Apeks and Aqualung regulators full-time for 30 years right here in our workshop. We can professionally install this 5th port turret modification onto your current DST first stage before shipping it back out. Take advantage of our national store benefit: enjoy FREE Shipping anywhere in Canada on all gear orders of $200.00 or greater!