Apeks EVX TUNGSTEN Stage 3 Regulator Set

The EVX Tungsten pairs an over-balanced first stage with a balanced laminar-flow second stage and a PVD-coated finish. Its inlet closure, dry kit and adjustable breathing controls make it a feature-rich choice for divers who want protection and configuration flexibility in one regulator platform.

Features and benefits

Over-balanced first stage. The diaphragm mechanism increases intermediate pressure slightly faster than surrounding pressure as you descend, helping compensate for denser breathing gas at depth.
Dry environmental chamber. The sealed chamber keeps water and sediment away from the first-stage spring mechanism and supports resistance to freezing in cold water.
Automatic inlet closure. The inlet closes when the first stage is disconnected, helping keep water and debris out. Continue to protect the connection with its clean, dry dust cap.
Heat exchange. The heat exchanger transfers warmth from the surrounding water to the valve area, helping counter the cooling that occurs as gas expands.
Balanced second stage. Pneumatic balancing reduces the force needed to open the demand valve, helping the second stage respond smoothly as you inhale.
Laminar-flow valve. The EVX valve is designed to guide gas smoothly through the second stage, reducing turbulence in the breathing path.
Inhalation-effort adjustment. The adjustment knob lets you change the effort needed to start a breath, so you can tune the response within the regulator’s operating range.
Venturi control. The lever changes airflow assistance inside the second stage. Use the pre-dive setting for surface handling and the dive setting as directed in the manual.
Progressive purge. The purge responds to how firmly you press it, giving you control over the flow used to clear the second stage.
Reversible hose routing. An authorised technician can configure the second stage for left- or right-hand hose entry to suit your equipment layout.
Interchangeable exhaust. The exhaust options let you choose a compact layout or wider bubble diversion to suit your diving and field of view.
Comfo-Bite mouthpiece. The silicone palate bridge supports the second stage with less need to clench your jaw, which can make longer dives more comfortable.
Hose-routing choice. The first-stage port layout provides several supply-hose positions and angled high-pressure connections for gauges or transmitters.
Flexible breathing hose. The braided hose bends readily around your equipment, helping reduce tension at the second-stage connection.
Tungsten finish. The dark PVD coating adds a hard protective finish to exposed metal surfaces, helping resist wear during regular use.
Matching EVX alternate. The supplied EVX octopus combines a balanced valve with visible yellow detailing for easy identification in the assembled set.

Setup and compatibility

Connection: DIN, Yoke. Choose the fitting that matches your cylinder valve and its pressure rating.

This Stage 3 listing includes the primary regulator and the matching listed octopus. Confirm the selected cylinder connection and any separately listed accessories before ordering.

Care, rinsing and storage

After each dive, connect the assembled regulator to a scuba cylinder and open the valve to pressurise the system. Keep it pressurised while fully submerging the first stage, second stages and connected hoses in fresh water. This allows thorough cleaning of the exposed components and hoses while helping prevent water entering the internal air passages, where it can cause corrosion and damage. Keep the cylinder secure throughout cleaning.

For routine cleaning, Dive Gear Australia recommends Cressi Neoclean Wetsuit Wash Neoprene Cleaner 500 mL or Revivex Wetsuit Shampoo 10 oz to help remove salt, chlorine and everyday residue. Dilute according to the cleaner’s label, then rinse thoroughly with fresh water.

Keep the regulator pressurised throughout washing and rinsing. Lift it out of the water and dry the first stage and cylinder connection before closing the cylinder valve, releasing the pressure and disconnecting. Fit the clean, dry dust cap, then allow the regulator to dry in the shade. Store it with the hoses loosely curved, without sharp bends or tension.

Before each dive, inspect the mouthpiece, hoses and connections for wear or damage. Have your regulator serviced by an authorised Apeks technician at the interval specified in its manual, or sooner if it leaks, is damaged or its breathing performance changes. Leave internal adjustments and repairs to a qualified technician.

Technical Specs

Apeks EVX TUNGSTEN Stage 3 Regulator Set technical specifications
Brand	Apeks Dive Gear
Main model / configuration	Apeks EVX Tungsten
Product type	Regulator
Regulator type	Regulator Set
Regulator connection	Din, Yoke
First-stage design	Over-balanced diaphragm
Second-stage design	Pneumatically balanced laminar-flow valve
High-pressure ports	2 × 7/16 in UNF
Low / medium-pressure ports	5 × 3/8 in UNF
Environmental sealing	Dry Kit Standard
Cold-water suitability	Freeze-resistant end cap
Hose routing	Reversible left/right second stage
Mouthpiece	Comfo-Bite
Venturi control	Yes
Materials	PVD-coated exterior
Nitrox / oxygen compatibility	Yes to 40% O2 when new, out of the box (21% in Europe).
First-stage materials	PVD Coated
Hose	Double-swivel hose
Inhalation-effort control	yes; no
Heat exchanger	Yes
Automatic inlet closure (catalogue)	ACD automatic inlet closure

Additional specifications

Body Type	One piece forged body
Exhaust tee Diver Changeable	Two sets supplied
Exhaust tee Diver Changeable	Yes

Based on Apeks Dive Gear product information.

Type	Din, Yoke

In-stock orders placed before 12 noon Melbourne time on weekdays are usually dispatched the same day once payment is confirmed. This excludes public holidays, pre-orders, backorders, special orders and custom orders. Dispatch times can vary. Delivery time depends on the carrier and your location.

Standard mainland Australian shipping is $20. Click & Collect from our Hallam store is free once your order is ready.

Large or bulky gear: additional freight charges apply on top of standard shipping: large dive bags $30; long freediving fins $15; long spearguns $20. Scuba tank freight is shown at checkout.
Rural, remote & offshore: rural means anywhere outside metropolitan areas. Carrier availability and additional charges may apply, including for island and territory destinations. Our team will contact you if an extra freight quote is needed.

The available delivery rate for your order is shown at checkout.

Need your gear urgently? You are welcome to arrange your own same-day courier or Uber pickup from Hallam. Call 03 9702 3694 before booking so we can confirm payment, that your order is packed and ready, and a collection time. Tell us who will collect and give your driver the order number. You arrange and pay the courier directly; delivery timing depends on the provider.

Read our full shipping and delivery information →

Contact us within 30 days of delivery to request a refund, exchange or optional store credit on eligible unused goods within Australia. Refunds go to the original payment method. Keep goods clean and undamaged with tags, original packaging and all accessories. No restocking fee applies to eligible returns meeting these conditions.

For change-of-mind returns and size exchanges, you pay return postage and replacement shipping. Original delivery charges are not refunded. Water-tested goods, clearly marked clearance items and genuinely custom-made or personalised items are excluded from change-of-mind returns. Ordinary discounted goods remain eligible.

For product problems, please call 03 9702 3694 before returning an item so we can help and explain the next steps.

Still unsure which size to choose?

Call our experienced dive instructors on 03 9702 3694 before ordering. Have your measurements and preferred product ready so we can help you choose the most suitable size. Fit varies between brands and models.

Read our full returns and exchanges policy →

FREE CLICK & COLLECT
Usually ready same day*

Select local pickup at checkout. We will email you when your order is ready. Please wait for your ready-to-collect confirmation before visiting, then bring your confirmation email and photo ID.

Need your gear urgently? You can arrange your own same-day courier or Uber pickup. Call 03 9702 3694 before booking so we can confirm payment, that your order is packed and ready, and a collection time. Tell us who will collect and give your driver the order number. You arrange and pay the courier directly; delivery timing depends on the provider.

Collect from our Hallam store
Factory 4 / 56–60 Hallam South Rd
Hallam VIC 3803

*For items in stock at our Hallam store during opening hours, subject to order processing. Available-to-order and special-order items take longer. Collection is unavailable while the store is closed.

View collection details and opening hours →

Can I collect my order from the store?

Yes. Choose free local pickup at checkout and wait for your ready-to-collect email before visiting our Hallam store. Bring your confirmation and photo ID. See Click & Collect details.

How do I choose the right size?

Use the product's size chart where available and compare your measurements with the guide for that brand. Sizing varies between brands and products. Still unsure? Call our experienced dive instructors on 03 9702 3694 during business hours before ordering. Have your measurements and preferred product ready. For fins and boots, tell us which socks or dive boots you will wear.

How do I check availability?

Select your required options, such as colour and size, to see availability for that variation. “Available to order” means the item may need to be sourced before dispatch. Call 03 9702 3694 to check the current lead time before ordering, especially if you need your gear for a trip or a particular date.

When will my order be dispatched?

Can I exchange an item if it does not fit?

Contact us within 30 days of delivery to request a refund to the original payment method, exchange or optional store credit on eligible unused goods. You pay change-of-mind return postage and replacement shipping; original delivery charges are not refunded. No restocking fee applies to eligible returns. Clearance and genuinely custom-made items are excluded from change-of-mind returns. Read the return conditions and next steps.

Can you help me choose the right gear?

Yes. Call 03 9702 3694 during store hours or email [email protected]. Tell us which product you are considering and how you plan to use it.

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