XTX Brochure

8/10/2019 XTX Brochure

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The heart of your diving

equipment and your most

important choice when assembling

your personal diving system. There are

many regulators on the market and the

selection may seem daunting. Apeks makes

the decision easier. As regulator specialists

we are dedicated to manufacturing regulators

that give reliable high performance in the most

demanding situations - perfect for professional and

tech divers and the only choice for serious recreational

divers. The performance of your regulator is of the utmost

importance, as this reflects the ease of breathing in all diving

conditions and increases the enjoyment and safety of your dive.Our equipment has evolved through many years of research and

development. Independent tests prove their superiority, comfortably

exceeding the tough US Navy Group A test and the CEN European

Standard CE (the first regulators to achieve this mark of distinction). While our

performance figures are impressive, even more important are the comments we receive

from our customers. Divers choose our regulators because their friends, family, colleagues

and instructors, have wholeheartedly recommended Apeks. The most experienced divers from

all disciplines believe in us. We have achieved our original goal - to make the best diving

equipment in the world - and we continue to strive for excellence.

XTX REGULATOR RANGE- TAKE CONTROL


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XTX Reversible Venturi System (RVS)Ambient pressure is greater than the pressure under the diaphragm, so the

diaphragm is pushed down onto the lever to assist with the breathing effort.

With the venturi lever in the minus position, the air-flow from the 2nd stage is

directed onto the diaphragm, closing the valve and preventing freeflow.

The Apeks Reversible Venturi System (RVS) allows the diver to control the venturi

assist with greater precision due to the indexable Venturi Lever*. Gas flow to the

diver can be directed towards the mouthpiece by indexing the venturi lever

towards the plus position. This allows the diver an assisted breathe resulting in a

more comfortable dive with less breathing effort. Due to its unique design the

venturi lever can be moved to either the left or right side of the regulator,

depending on the desired hose configuration.

The Indexable Venturi Lever can therefore act as a pre dive switch. Set in the

minus position, the second stage will not free flow either during the entry phase or

if the regulator is dropped in the water. When the diver begins to use the regulator,

the venturi lever can be indexed toward the plus position and the second stage

will give increased venturi assistance according to the set level dialled in.

*Indexable Venturi Lever incorporates a ratcheting mechanism, giving a more precise, tactile feel when setting.

Only available on certain models. The standard venturi lever is available on all other models.

The XTX range offers new features to advance Apeks tried and

tested regulator designs. The option for either left or right-hand

hose configuration and the Diver Changeable Exhaust system

(DCE). Take control.

The XTX regulators can be dedicated to either left or right-handeduse. The hose routing can be altered from right to left or left to

right by an Apeks Service Technician. This is an extremely useful

feature offering much greater flexibility for personal kit

configuration over other regulators.

Left hand

configuration

Right hand

configuration

XTX REVERSIBLE REGULATOR FEATURES

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XTX Reversible Second Stage Valve OperationWhether the spindle is set in the left or right-handed configuration, the

diaphragm is drawn down as the diver inhales (see Open Position diagram)

depressing the lever. The lever tilts and lifts the balanced valve and rubber

seating off the valve seat (orifice) allowing the air to flow through the valve

mechanism to the divers mouth. When the diver stops inhaling, the diaphragm

recovers and the spring pushes the poppet valve and rubber seating back onto

the seat, preventing further air flow.

Pneumatically BalancedThe Balanced Spindle Mechanism can be set by your local dealer in either the

left or the right-hand configuration, depending on your individual preference.

Combining existing technology with new ensures maximum performance and

versatility, whilst retaining our world renowned reliability. The poppet valve

allows air to pass through its centre to a counter-balance cylinder, which assists

the spring to close the valve eliminating the need for a heavier valve spring

reducing the breathing effort.

Cracking Resistance ControlThe Cracking Resistance Control is used to adjust the spring load of the poppet

valve assembly and so vary the initial cracking resistance of the second stage.

The further the control is wound in the greater the cracking resistance. The

Cracking Resistance Control also incorporates an internal fine adjustment for

use by an Apeks Service Technician. This allows the second stage to be set to a

minimum breathing effort with a wide range of first stage medium pressures.

The Diver Changeable Exhaust (DCE) offers the choice of either a

compact, light-weight system, or a longer exhaust diffuser. DCE

can be configured to prevent virtually any bubble interference

from obscuring the divers view. The exhaust diffusers can be

easily and very quickly changed by sliding and locking the

preferred set into place. Divers can now configure their own

regulator exhaust diffusers for individual dive conditions or

requirements.

Extended

exhaust system

Compact

exhaust system

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XTX200The flagship of the Apeks Regulator Range and the definitive blend of style

and high performance. Every detail has been carefully designed to offer a

high quality piece of equipment. From the attractive and hard wearing

finish through to its overall build quality, we believe that your

regulator should be as flexible as you are. The XTX 200

second stage retains our well proven combination of

diver adjustable venturi and cracking resistance

controls, with ergonomically designed venturi lever and

breathing resistance knob for ease of use. The XTX 200

also has the benefit of an additional micro adjustment

that allows each individual regulator to be altered during

service to keep your regulator at optimum performance.

The second stage, although shipped in a standard right

hand configuration, can be reversed into a left

hand configuration by your Authorised

Apeks Technician. This

regulator is supplied with

both a compact or larger

exhaust which is easily

changed by the diver. The

XTX 200 has evolved from

the world renowned ATX 200. This superb

regulator offers smooth air supply with an

incredibly low breathing effort.

The ultimate Apeks regulator.

First Stage All medium pressure ports are now 3/8 UNF

so that the reversible XTX second stage canmount to either side of the first stage

Balanced for superior performance

The XTX200 comes standard with an

environmental dry kit, keeping water and

contaminants out and also improving the

models resistance to freezing

Tough two shot moulded 300 bar DIN hand

wheel

New cosmetic ring and co-moulded yoke

knob

Compatible to EAN 40, new, out of the box

Robust compact forged body

4 angled medium pressure ports 3/8 UNF

2 angled high pressure ports 7/16 UNF

Removable Arcap valve seat

Second Stage New XTX pneumatically balanced second

stage has left-to-right reversibility and a Diver

Changeable Exhaust (DCE) system. The large

tee provides the best exhaust bubble

dispersion, while the smaller tee is morelightweight and compact. Both exhaust tees

are included

Improved exhalation performance and overall

work of breathing

Suitable for cold-water use

This pneumatically balanced second stage

has diver-adjustable controls for opening

effort and venturi control

Indexable, tactile and audible venturi

adjustment

Reversible Venturi System

Micro adjuster

Comfo Bite mouthpiece

Metal moulded into front cover

New optional extra hose swivel connection

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Total work of breathing = 0.41 Joules/litre.

Acceptable limit = 3.00 Joules/litre.

EN250 criteria 50 msw 62.5 l/min.

SEEPAGE10


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First Stage This first stage is similar to its predecessors

found on the ATX100 and TX100. New for this

generation is a moulded environmental

diaphragm, a cosmetic ring and a co-moulded

yoke knob

All medium pressure ports are now 3/8 UNF so

that the reversible XTX second stage can mount

to either side of the first stage


The XTX100 comes standard with an

environmental dry kit, keeping water and

contaminants out and also improving the

models resistance to freezing

4 angled medium pressure ports 3/8 UNF

2 angled high pressure ports 7/16 UNF


Luxurious satin silver chrome finish

Second Stage Pneumatically balanced second stage

Left-to-right reversibility

Diver Changeable Exhaust (DCE) system, giving

the diver the ability to change from a large to asmall exhaust tee. Both exhaust tees are

included with the regulator

Improved exhalation performance and overall

work of breathing


This pneumatically balanced second stage has

diver-adjustable controls for opening effort and

venturi control

Indexable, tactile and audible venturi adjustment

Reversible Venturi system

Micro adjuster allows fine adjustment by

technician during service keeping your regulator

at optimum performance

Comfo Bite mouthpiece for comfort and to avoid

jaw fatigue

XTX100The XTX100 regulator can be converted from a right

handed hose configuration (as supplied from the APEKS

factory in the standard) to a left handed one. This feature is

known as the Reversible Venturi System (RVS). Changing

the regulator to a left handed configuration is both quick

and simple and can be performed by any APEKS

Authorised Service Technician.

The XTX100 regulator incorporates the new feature of Diver

Changeable Exhausts system (DCE). This system gives the

diver the ability to change from a small exhaust tee to a

large exhaust tee. This gives the user a choice of the wider

exhaust tee for minimal bubble interference (essential for

underwater photography) and the narrow exhaust tee for a

smaller, compact and comfortable regulator.

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SEEPAGE10


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XTX50The TX50 and ATX50 have been amongst the best performing regulators in the world. The XTX50 is even better than its

distinguished predecessors. XTX50 retains the diver adjustable breathing resistance including the Micro-adjustment and

features the new Reversible Venturi System (RVS). With this level of control it is possible to tune the regulator to your

personal breathing requirements. The heat exchanger system virtually eliminates the possibility of second stage freezing.

The dry sealed swivel turret first stage, finished in highly polished chrome, completes the regulator. This reliable first stage

is one of the most successful ever, consistently coming at the top in independent regulator reviews. The XTX50 regulator

gives top performance in all conditions due to its balanced first and second stages. Available in either A Clamp (yoke)

version or DIN.

First Stage All medium pressure ports are now 3/8 so

that the reversible XTX second stage can

mount to any of the ports


An environmental dry kit comes as standard

4 medium pressure ports 3/8 UNF

2 high pressure ports 7/16 UNF

Polished chrome finish

Metal 300 bar DIN handwheel or 2 shot

moulded yoke handwheel


Second Stage New XTX pneumatically balanced second

stage has left-to-right reversibility and a Diver

Changeable Exhaust (DCE) system. Both

exhaust tees are included with the regulator

Tough two shot moulded front cover

Diver-adjustable controls for opening effort

and venturi control

Cracking Resistance Control alters breathing

resistance to suit individual diver preference

Indexable, tactile and audible venturi

adjustment

Reversible Venturi System

Comfo Bite mouthpiece



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SEEPAGE10


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XTX40The XTX40 regulator comes with all the features of

our highly successful XTX50 with the exception of

diver adjustable breathing resistance control. This

regulator is supplied with the compact exhaust (the

extended exhaust may be purchased separately).

Although the XTX40 is a mid-range Apeks

regulator it is still classed as a high performance

regulator in independent reviews. The first stage is

identical to the XTX50 DST first stage and benefits

from that very important first stage gas delivery.

Premier league cold water equipment at an

excellent price. Available in either A Clamp Yoke

version or DIN.

First Stage Swivel turret body

4 medium pressure ports 3/8" UNF

2 high pressure ports 7/16" UNF

Environmentally dry sealed system

Polished chrome finish


Metal 300 bar DIN handwheel or 2 shot

moulded yoke handwheel

Second Stage Reversible Venturi System

Pneumatically balanced valve design

Suitable for both warm and cold water use

Bright chrome finish

Right or left hand hose configuration

Tough two shot moulded front cover

Diver Changeable Exhaust (DCE) - only oneset supplied with this regulator


Nitrox and Octopus versions available

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SEEPAGE10


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First Stage Swivel turret

4 medium pressure ports 3/8" UNF

2 high pressure ports 7/16" UNF

Polished silver chrome finish


Ergonomic Handwheels

Available with DIN or yoke fittings

Second Stage Reversible Venturi System

Pneumatically balanced valve design

Bright Chrome Finish

Suitable for warm water use only

Two-shot moulded front cover

Diver Changeable Exhaust (DCE) - only one

set supplied with this regulator

New Optional Extra Hose Swivel connection

(this is available for all our regulators)

Octopus version available

XTX20Invariably, we would advise divers to select one of our

environmentally sealed regulators as, with this feature, divers can

use their equipment in all waters around the world. However, if

you only ever intend to dive in warm water conditions the XTX20

is your perfect choice. This regulator has the performance of the

XTX40 (with, of course, the exception of its cold water features)

and is made to the same quality standards. Exceptional value for

money. This regulator is supplied with a compact exhaust (the

extended exhaust can be purchased separately).




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SEEPAGE 10


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XTX NITROXWe offer a range of regulators suitable for use with Nitrox and Oxygen (also known as oxygen

enriched air or EAN).

Standard Apeks regulators are suitable for use with oxygen enriched gases ( i.e. Nitrox etc.)

providing the oxygen content does NOT EXCEED 40%. For mixtures containing more than

40% Apeks offers Nitrox regulators specially made at our factory. This equipment is cleaned

and assembled in our purpose built class J (10,000) Clean Room using oxygen safe

components and lubricants and are suitable for

100% oxygen use. All first stages are available in

yoke (A) clamp or DIN fitting. Nitrox equipment

will be supplied in Europe in accordance with the

prEN 144-3 and prEN3949 when the texts are

published.

Standard Apeks regulators can be

professionally converted to oxygen

service and oxygen compatibility

kits are available to Apeks dealers

together with instructions for O2.

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XTX200 NitroxFor specification please see standard XTX200 regulator

(page 3). Our Nitrox regulators, including the XTX200, are

normally supplied with either Yoke (A) clamp or DIN fitting at

the time of going to print (see above with reference to

European standard).

XTX50 NitroxPlease see page 5

Nitrox DS4 First StageWe also supply a Nitrox version of the DS4 1st Stage dry sealed, no turret, 4 x 3/8 UNF medium pressure ports and 1 high

pressure port 7/16 UNF.




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XTX OCTOPUSXTX50 Octopus This octopus is based upon the XTX50

second stage (see page 5)

It includes left/right reversibility, cold water

capability and the performance you would

expect from an Apeks pneumatically

balanced valve.

Diver-adjustable controls for opening effort

and venturi control.

The unit has a high visibility yellow front

cover, yellow accent pieces and a 36 yellow

hose.

Ratcheting Venturi.

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XTX40 Octopus This octopus is based upon the XTX40 second stage (see page 6).

It includes left/right reversibility, cold water capability and the performance

you would expect from an Apeks pneumatically balanced valve.

Diver-adjustable venturi control.

The unit has a high visibility yellow front cover, yellow accent pieces and a

36 yellow hose.

XTX20 Octopus

This octopus is based upon the XTX20 second stage (see page 7).

It includes left/right reversibility and the performance you would expect from

an Apeks pneumatically balanced valve.

Diver-adjustable venturi control.

Designed for water temperatures above 50F (10C).

The unit has a high visibility yellow front cover, yellow accent pieces and a

36 yellow hose.

Egress Octopus Pneumatically balanced valve provides superior performance.

Unique 120 angle between the mouthpiece and the hose, which is ideal for

sharing air with your buddy.

Breathes smoothly when positioned right side up or upside down.

High visibility 36 yellow hose distinguishes your Egress hose from your

primary hose and is easily spotted in case of an out-of-air emergency.


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XTX REVERSIBLE REGULATOR FEATURES (CONTINUED)Balanced Diaphragm First Stages

Our first stages represent the cutting edge of design. The Apeks team has overcome

complex engineering constraints and produced equipment that achieves top

performance and yet remains uncomplicated, guaranteeing greater reliability and

lower cost maintenance and service. The first stage - the powerhouse of your

regulator - reduces the high pressure air stored in your cylinder to a controllable

intermediate pressure of 9-10 bar. The air then flows along the medium pressure

hose to the second stage (demand stage).

Apeks manufactures an extensive range of first stages to meet the needs of every

diver. All are of pressure adjustable depth compensated balanced diaphragm design

and supply air at exactly the right pressure. For example: as the diver descends the

demand for air increases. To maintain the supply, the intermediate pressure increases

in ratio to the water depth. In the Dry-Sealed System this is achieved by allowing

hydrostatic pressure, acting on the outer sealing diaphragm, to be transmitted to the

primary diaphragm via the load transmitter. Diaphragm first stages have a number of

advantages over piston type first stages, especially when combined with Apeks Dry

Sealed System*. They offer outstanding gas flow, easy maintenance and adjustment

of interstage pressure, and a sealed mechanism totally protected from all types of

contamination and freezing.

*Apeks invented the first successful dry environmentally sealed system

and all our regulators intended for cold water use, have this

system as standard.

LOAD TRANSMITTER

OUTER

DIAPHRAGM

HYDROSTATIC

PRESSURE

PRIMARY

DIAPHRAGM

COUNTER

BALANCE

CHAMBER

Exceptional Breathing Performance

Serious professional and military divers respect Apeks as a manufacturer of superior high performance breathing regulators. The XTX

range not only has to exceed all current European Standards, but also has to be better than its predecessors - the world renowned TX

and ATX range of regulators. Aesthetic considerations alone are never enough to satisfy our designers. You cant tell how good a

regulator is just by looking at it. The XTX range uses all that is good and successful in the TX and ATX, and with typical Apeks attention

to detail combines this with new ideas and materials to produce even better regulators.

The Apeks XTX range has evolved through many years of regulator development. Their

performance is exceptional. The graph (right) details the breathing cycle of our flagship XTX200

regulator. Performance is calculated by plotting and recording this cycle. The inhalation line begins

on the right hand and runs across the bottom to the left. The first oscillation (termed the cracking

spike) represents the effort required to initially open the valve and begin air delivery. Even at this

testing depth the graph shows the low Work Of Breathing (WOB), indicating the diver is expending

almost no energy in maintaining air flow. The cycle continues and the upper line (left to right)

represents the WOB whilst exhaling (greater due to increased gas density at depth). The total Work

Of Breathing is calculated by measuring the total area within the loop - an incredible 0.41 Joules per

Litre*.

We are experts in the field of regulator technology. Apeks purpose built factory in Blackburn contains the complete process under one

roof. Our unique design, development, testing, manufacturing, plating, inspection and assembly facilities produce high quality, highperformance equipment. Such is our confidence in the quality and reliability of our manufactured equipment we offer a lifetime

guarantee. The XTX range has been developed to further enhance underwater enjoyment for all divers.

* To qualify for the CE mark, regulators must be less than 3.0 J/L at 50 metres, RMV.: 62.5 (2.5L x 25 Breaths/min), and for US Navy Group A the regulators WOB needs to be less than 1.4 J/L at 60 metres.





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Worldwide Distribution Centres

Apeks products are backed by a professional service with a worldwide

distribution network. Africa, America, Asia, Australasia, Europe - wherever you

dive you should be able to locate suitably qualified technicians to keep your

equipment in optimum condition. Our dealers will also be pleased to give you

information on our products and service. You can locate details of your nearest

Authorised Apeks Dealer by contacting your distributor. Details can be found on

our website www.apeks.co.uk

Apeks regulators are supplied with a lifetime guarantee.

Apeks Marine Equipment Ltd. Neptune Way, Blackburn, Lancashire, England.

T/ +44 (0) 1254 692200 F/ +44 (0) 1254 692211

E/ [email protected] W/ www.apeks.co.uk

Authorised Apeks Dealer

Apeks Distributor

XTX Brochure

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