DirDirect :: Regulators & Hoses :: Regulator First Stages

First stages from Halcyon, Scubapro, Apeks and Oceanic for single and twin tank systems, stage bottle, argon regulators, blanking plugs, overpressure relief valves, dust caps and adapters.

Regulator First Stages

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DIN 1st Stage Dust Cap
MGE plastic dust cap to fit DIN 1st stage regulators.
£5.50
Highland DIN Dust Cap
Precision machined from anodized aluminum. Protects threads on DIN first stage. Seals water out of first stage.
£12.00
Halcyon H-50D First Stage Regulator
This balanced, environmentally sealed diaphragm provides premium performance and rock solid protection in the absolute worst environmental conditions.
£169.00
Halcyon H-75P First Stage Regulator
The unsurpassed performance results from a balanced piston design which delivers significantly more gas than any other design while leaving performance completely unaffected by changing tank pressure.
£199.00
1st Stage Blanking Plug
Regulator 1st Stage Blanking Plug. Choice of 3/8" or 1/2".
£5.95
Choose Port Size
Apeks Over Pressure Relief Valve
Apeks Over Pressure Relief Valve for Drysuit Inflation System.
£19.95
Argon 1st Stage with OPV
Argon 1st stage with over-pressure relief valve. Regulator has one LP port for inflator hose and is for suit inflation only.
£58.00
Scubapro MK11 First Stage Regulator
A perfect choice for the recreational diver. Machined marine grade chrome plated brass body. Four 3/8 UNF low pressure ports and two high pressure ports.
£130.00
£145.00 save 10%
Scubapro MK17 First Stage Regulator
Great Performance. Four low pressure ports and one high pressure ports. Overbalanced diaphragm design with Thermal Insulating System (TIS) exceeding CE cold water diving requirements.
£157.00
£175.00 save 10%
Scubapro MK2 First Stage Regulator
The simplest first stage piston mechanism ever, with fantastic performance and easy maintenance. Four low pressure ports and one high pressure port.
£81.00
£90.00 save 10%
Scubapro MK25 First Stage Regulator
Highly Recommended. An unfailing performance, due to patented design. Five high flow low pressure swivel ports and two high pressure ports.
£225.00
£250.00 save 10%
Apeks DS1 First Stage Regulator
High quality 1st stage ideal for stage regulator.
Compact environmentally sealed 1st stage with one 3/8 medium pressure port and one high pressure port.
£100.00
£134.00 save 25%
Apeks DS4 First Stage Regulator
Ideal for twinset configuration. Highly Recommended. 4 LP + 1 HP port. First Stage DIN fitting.
£125.00
£147.00 save 15%
Apeks DST First Stage Regulator
Ideal for stage cylinder regulator due to swivelling turret. Four medium pressure ports mounted on a swivel turret and two high pressure ports on the body.
£159.00
£214.00 save 26%
Apeks TEK3 First Stage Regulators - Pair
TEK3 First Stages specifically designed for use on a twinset. The system benefits from streamlined hoses with little chance of accidental snagging and also improved ease of access to cylinder valves. Comes in pairs.
£405.00
£475.00 save 15%
Apeks US1 First Stage Regulator
Compact unsealed 1st stage with 1 x 3/8 medium pressure ports and one high pressure port.
£76.00
£88.00 save 14%
Apeks US4 First Stage Regulator
Compact unsealed 1st stage with 4 x 3/8 medium pressure ports and one high pressure port. Choice for argon bottles.
£89.00
£104.00 save 14%
Oceanic CDx5 First Stage Regulator
The Oceanic CDX-5 balanced diaphragm first stage is the perfect regulator for extreme diving conditions, such as ice diving or diving in high sediment.
£217.00
Oceanic FDx10 First Stage Regulator
Over-balanced diaphragm first stage forged from marine-grade brass, the Oceanic FDX-10 features optimized air paths and angled hose ports for superior performance and comfort.
£244.80
Oceanic SP5 First Stage Regulator
The Oceanic SP-5 sport piston first stage 
offers all divers the opportunity to own a top-performing regulator at an unbeatable price for warm water diving.
£117.00
Scubapro DIN/Int Adapter
For divers who are used to diving with DIN systems, it is sometimes a problem to find DIN tanks. With the Adapter Yoke, they can use their first stage anywhere around the world.
£38.00
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Underwater Explorers 15 Castletown Portand Dorset DT5 1BD United Kingdom Underwater Explorers
15 Castletown
Portand, Dorset
DT5 1BD
United Kingdom

DirDirect is a world-leading online dive shop run by Underwater Explorers based in Portland, Dorset, UK. Underwater Explorers is a dive centre with a striking difference. It was born out of the concept of "Hogarthian" diving, safe and streamlined equipment configuration, using the most robust products available for recreational and technical diving -- but at the same time, keeping it simple. It is based on the concept of "less is more" in diving and acts as an equipment outlet, training facility and source of sound advice.

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