Apeks Complete Regulator Set – XTX40 w/ DS4 Regulator + XTX50 Octopus + 2-Gauge Console
Apeks Complete Regulator Set – XTX40 w/ DS4 Regulator + XTX50 Octopus + 2-Gauge Console is backordered and will ship as soon as it is back in stock.
What's in this bundle
Apeks Complete Regulator Set – XTX40 w/ DS4 Regulator + XTX50 Octopus + 2-Gauge Console is backordered and will ship as soon as it is back in stock.
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Product Information
This set puts a complete Apeks regulator system together in one purchase: the Apeks XTX40 Dive Regulator w/ DS4 as your primary first and second stage, the Apeks XTX50 Octopus Dive Regulator as your backup air source, and the Apeks 2-Gauge Console 5K PSI/230ft Black/Dark Grey to keep an eye on tank pressure and depth. All three pieces come from the same Apeks platform, so hose routing, mouthpiece feel, and cold-water performance line up across your primary and backup regulators.
The XTX40's DS4 first stage uses an over-balanced diaphragm design with an environmental dry system, two HP ports and four MP ports angled for clean hose routing, and a Diver Changeable Exhaust system that lets you swap between a small and large exhaust tee. Its second stage is pneumatically balanced with a 2-stage progressive purge and a soft-touch venturi lever, and it's available in DIN and Yoke. The XTX50 Octopus carries the same pneumatically balanced second stage design, plus a breathing effort control knob so you can desensitize it when it's stowed, a silicone exhaust valve, and braided flexi-hoses rated for cold water. Both second stages use the Comfo-bite mouthpiece, and both convert from right-handed to left-handed hose routing through an Apeks Authorized Service Technician. The XTX50 is also compatible with EAN40 out of the box, and its molded parts carry an additive aimed at MRSA, E-Coli, bacteria, fungi, viruses, mold, yeast, and algae.
The 2-Gauge Console rounds out the set with a nickel-plated brass case and an anti-splinter polycarbonate dial window backed by an over-pressure capsule, so the gauge face is protected from impact. The SPG reads 0-360 Bar/0-5000 Psi, the depth gauge reads down to 70m with a resettable max depth indicator, and both dials have a long-lasting phosphorescent effect for low-visibility conditions. Two attachment loops give you flexibility in how you route it on your gear, and its materials are O2 compatible.
- DS4 first stage uses an over-balanced diaphragm design for stronger performance at depth
- Diver Changeable Exhaust system lets you swap between a small and large exhaust tee on the XTX40
- Environmental dry system keeps water and silt out of the first stage's spring chamber
- Pneumatically-balanced second stages on both the XTX40 and XTX50 for smooth, easy breathing
- Breathing effort control knob on the XTX50 octopus for easy desensitizing when stowed
- Silicone exhaust valve and EAN40 compatibility out of the box on the XTX50 octopus
- Comfo-bite mouthpieces and cold-water rated braided flexi-hoses on both regulators
- Nickel-plated brass gauge case with a shock-resistant, anti-splinter polycarbonate dial window
- Depth gauge reads down to 70m with a resettable max depth indicator and phosphorescent dials for low-visibility reading
- Matched Apeks engineering across the XTX40, XTX50, and gauge console keeps hose routing, mouthpiece feel, and cold-water performance consistent across the set
| Brand | Apeks |
| Model | XTX50 Octopus |
| Product Type | Octopus / alternate air source |
| Second Stage | Pneumatically balanced |
| Adjustment | Breathing effort control knob |
| Purge | Large 2-stage progressive purge button |
| Exhaust | Silicone exhaust valve |
| Hose | Braided flexi-hose, cold water rated |
| Orientation | Convertible right or left hand by an Apeks technician |
| Mouthpiece | Comfo-bite |
| Gas Compatibility | EAN40 out of the box |
- Apeks XTX40 Dive Regulator w/ DS4
- Apeks XTX50 Octopus Dive Regulator
- Apeks 2-Gauge Console 5K PSI/230ft Black/Dark Grey
Frequently Asked Questions
What's included in the Apeks XTX40 regulator set bundle?
This bundle includes the Apeks XTX40 Dive Regulator w/ DS4 first stage, the Apeks XTX50 Octopus regulator, and the Apeks 2-Gauge Console (5K PSI/230ft, Black/Dark Grey). All three ship together as one order.
What are the specs of the Apeks XTX40 regulator?
The XTX40 is a first-and-second-stage regulator set built around a DS4 first stage. It uses an over-balanced, environmentally sealed diaphragm design with 1 high-pressure port and 4 medium-pressure ports, offers DIN and Yoke connections, and pairs with a pneumatically-balanced second stage rated for coldwater use.
What is the DS4 first stage on the Apeks XTX40?
The DS4 is the XTX40's first stage: an over-balanced, environmentally sealed diaphragm design with 1 high-pressure (7/16" UNF) port and 4 medium-pressure (3/8" UNF) ports angled for hose routing. It also has a Diver Changeable Exhaust system, letting you swap between a small and large exhaust tee.
What features does the XTX40 second stage have?
The XTX40's second stage is pneumatically balanced for smooth, easy breathing, with a 2-stage progressive purge button and a soft-touch venturi lever designed to resist grit and friction. It uses a Comfo-bite mouthpiece for comfort.
Does this set come with an octopus or backup regulator?
Yes, this bundle includes the Apeks XTX50 Octopus as the alternate air source. It has a pneumatically-balanced second stage, a breathing effort control knob to desensitize it when not in use, a 2-stage progressive purge, a silicone exhaust valve, and is compatible with EAN40 out of the box.
What's the difference between the XTX40 and XTX50 in this bundle?
In this set, the XTX40 is the primary first-and-second-stage regulator you breathe from, while the XTX50 is configured as the octopus, your alternate air source. Both use a pneumatically-balanced second stage, but only the XTX50 as listed here adds a breathing effort control knob and out-of-the-box EAN40 compatibility.
How fast does this bundle ship, and what if I need to return something?
Orders over our free-shipping threshold ship free with next-day delivery, and the product page shows the actual delivery date for your order. If something isn't right, returns are handled under our standard DiveCatalog returns policy.




















