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Regulator First Stage

The first stage is vital to your regulator. It’s connected to your tank and reduces the pressure to approx. 10 bar. The first stage is connected to your second stage with a hose, and together they make the regulator.
Scubapro MK17 Evo First Stage
Scubapro

MK17 Evo First Stage

A high performance balanced diaphragm first stage regulator, the MK17 has been e..
€265,00
Apeks XTX DST First Stage
Apeks

XTX DST First Stage

Apeks XTX DST First Stage.
€279,00
Apeks DS4 First Stage
Apeks

DS4 First Stage

This compact first stage is a time-proven workhorse that has been embraced by th..
€219,00
Apeks XTX200 FSR First Stage
Apeks

XTX200 FSR First Stage

Compact one piece body.
4 angled medium pressure ports, 4 x 3/8" UNF...
€345,00
Mares First Stage R2S
Mares

First Stage R2S

The 2S first stage is simple and reliable. It is renowned for its ease of mainte..
€135,00
Apeks TEK3 First Stage
Apeks

TEK3 First Stage

The Tek 3 first stage, the ultimate combination for any Tech-Dive...
€310,00
Scubapro MK19 Evo First Stage
Scubapro

MK19 Evo First Stage

MK19 EVO is designed to be the ultimate first stage for cold water or contaminat..
€390,00
Scubapro MK25 Evo First Stage
Scubapro

MK25 Evo First Stage

The MK25 EVO first stage lets you enjoy an ultra-fast breathing response, instan..
€390,00
Scubapro MK2 Evo First Stage
Scubapro

MK2 Evo First Stage

The new MK2 EVO comes with the patent-pending Extended Thermal Insulating Syst..
€164,00
Scubapro MK11 First Stage
Scubapro

MK11 First Stage

The balanced diaphragm MK11, with its chrome-plated brass body specially designe..
€199,99
Aqualung Leg3nd First Stage
Aqualung

Leg3nd First Stage

When performance is your highest priority, LEG3ND is the answer...
€425,00
Apeks LH&RH TEK3 First Stages
Apeks

LH&RH TEK3 First Stages

Compact solid one piece body (both left and right)
3 medium pressure ports, 3 x..
€589,00
Apeks MTX-RC First Stage Din
Apeks

MTX-RC First Stage Din

Satin plated brass body with heat exchanging ribs for maximum thermal performanc..
€399,00
Mares First Stage 15X
Mares

First Stage 15X

The 15X first stage is suitable for any use. It has pre-oriented ports and an AC..
€199,00
OceanReef Neptune 1st stage SL-35/TX
OceanReef

Neptune 1st stage SL-35/TX

1st stage SL 35 TX (designed for Neptune Space).
€215,00
BTS First Stage - Compact Argon
BTS

First Stage - Compact Argon

Unbalanced 1st Stage, DIN, 300 bar; G 5/8″ thread, 300 bar, 1 HP port...
€104,00
Apeks MTX-R First Stage DIN
Apeks

MTX-R First Stage DIN

The MTX-R is based on the MTX, a regulator that was developed in accordance with..
€399,00
Mares 62X First Stage
Mares

62X First Stage

The 62X diaphragm first stage is small and highly efficient in cold water. The f..
€339,00

Regulator First Stage

The first stage is vital to your regulator. It’s connected to your tank and reduces the pressure to approx. 10 bar. The first stage is connected to your second stage with a hose, and together they make the regulator.

There are many options for a first stage. Most importantly, you can choose between a DIN (to 300bar) connection and an International/A-Clamp (to 232bar) connection. A DIN connection is suitable for up to 300 bar and is screwed into the tank. International (INT) designed for 232 bar and clamps over the tank valve. In general, DIN connections tend to be sturdier, lighter, and more compact than INT connections.

You also have the option to select between piston and diaphragm first stages and choose the number of ports as well as whether it should be balanced or unbalanced.

Piston or Diaphragm?

Piston-controlled first stages may vary in breathing comfort at lower tank pressures or depths.

Diaphragm-controlled first stages, on the other hand, provide consistent breathing comfort regardless of depth or tank pressure.

Balanced or Unbalanced?

After choosing between INT and DIN, and between piston and diaphragm, you might still decide whether you want your first stage to be balanced or unbalanced. Balanced first stages offer more consistent performance, regardless of the depth or tank pressure.

Over-balanced first stages also exist. Like balanced first stages, they offer consistent performance and additionally provide improved performance when diving to greater depths.

Number of Ports?

The number of ports on a first stage varies depending on the specific model, but they always include high-pressure and low-pressure ports. These ports are used to connect hoses to your tank. High-pressure ports are used for consoles with surface pressure gauges and computer transmitters, while low-pressure ports are used for second stages, octopuses, and inflator hoses.

At Lucas Divestore, we provide advice on the best first stages for your regulator. Visit our store in Nijverdal or get in touch with us.

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