Finalizing your payment…
Please wait a moment. Do not refresh.
Search entry
Shop by Category
Select an option
▼
Clearance Products
+
Kids Corner - Snorkelling Stuff
+
Prescription Masks and Goggles
+
Packages
+
Training and Guided Diving
+
Scuba and Watersports
+
Watersports Packages
+
Scuba Diving Recreational
+
Masks Snorkels and Fins
+
Hoods Gloves and Boots
+
Regulators
+
Diving Regulators
Octopuses
Reg + Occy Sets
Sidemount Regulators
Twinset Regulators
Regulator Accessories / Parts
Regulator Hose Adaptors
Regulator Mouthpieces
Regulator Service Kits
BCDs BCs
+
Weights and Belts
+
Exposure wear
+
Pockets and Pouches
Vests
Scuba Diving Technical
+
Snorkelling
+
Freediving
+
Hookah Diving
+
Swimming
+
Kayaking Accessories
+
Shark Repellent Systems
+
Hoses Hardware and Care
+
Photography and Lighting
+
Computers Gauges and Compasses
+
Apparel
+
Bags
+
Safety and Rescue
+
Cylinders Tanks
+
Spearfishing and Hunting
+
Commercial
+
Books Gifts and Certificates
+
Dive Club
New Products
Clearance
35% Kids Kit Discounts
AVATAR Run Out Sale
All Products ...
All Brands …
Information
About Us
+
Contact Us
+
Dive Club
Dive Resources
+
Dive Trips
+
Scuba Equipment Rental
Travel
Guided Dives
+
Courses
+
Advice
+
Home
Service & Repairs
+
Victorian Dive Sites Map
Home
::
Scuba and Watersports
::
Scuba Diving Recreational
::
Regulators
::
Diving Regulators
Product 146/205
REG DS4 FIRST STAGE DIN
726058-BCBKDIN
$400.00
$368.00
-8%
Ask a question about this item
See Alternatives
Customers who bought this product also purchased...
-14%
Cressi Mini Submersible Pressure Gauge (SPG) Console
$209.00
$179.10
Buy Now
-8%
End of line
Apeks XL4 Octopus 2nd Stage Regulator
$360.00
$331.20
Buy Now
Sonar LP 90 Degree Swivel Adaptor for Regulator
$52.00
Buy Now
LP 20/70/110-Degree Swivel Adaptor for Regulator
$52.00
Buy Now
Catalina S40 Aluminium Cylinder | 5.7L | 207 bar | Din/K Valve
$584.00
Buy Now
Sonar Mini Button Tech SPG - 350 bar
$55.00
Buy Now
Search entry
Home
Contact Us
Log In
Shopping Quicklinks
Flash Summer Sale !!
Training Courses
Snorkelling for Kids
Freediving
Clearance Sale
Spearfishing
Prescription Masks
Dive site Database
Diving Quicklinks
Guided Dives
Weedy Sea Dragons Melbourne
Courses and Training
Dive Resources
Melbourne Dive Sites Map
Dive Sites List
Course Calendar
Shop by Category
Clearance Products
Spears and Hunting
Wetsuit Apparel Exposure-Wear
Computer Gauge Analyser
BCD Sidemount Wing Harness
Mask Lens Googles
Mask Snorkel and Fins
Kids Corner - Snorkelling Stuff
Child/Junior Masks
Child/Junior Snorkels
Child/Junior Fins
Kids Mask Snorkel Sets
Kids Mask Snorkel and Fin Sets
Child/Junior Footwear
Child/Junior Swimming Gear
Kids Exposure Protection
Child/Junior Bags
Prescription Masks and Goggles
Prescription Masks
Prescription Swimming Goggles
Lenses
Apollo Lenses
Aqualung Lenses
Cressi Lenses
Hollis Lenses
Mares Lenses
Tusa Lenses
Packages
Snorkelling Packages
Scuba Diving Packages
Extended Range Packages
Underwater Photography Packages
Spearfishing Packages
Training and Guided Diving
Try Scuba Diving Non-Certified
Guided Diving Certified Divers
PADI - Courses Recreational
PADI - ReActivate (Refresher)
PADI - Open Water Diver
PADI - Advanced Open Water
PADI - Rescue Diver
PADI - Enriched Air Diver
PADI - Dry Suit Diver
PADI - Deep and Wreck
PADI - Specialty Courses
SSI - Courses Recreational
SSI - Courses Extended Range
Boat Diving
Scuba and Watersports
Watersports Packages
SCUBA Packages
TECH Packages
Snorkel Packages
Camera Packages
Suunto Packages
Scuba Diving Recreational
Masks Snorkels and Fins
Masks
Scuba Diving Masks
Professional Masks
Smaller Masks (Petite Faces)
Snorkels
Fins
Dive Fins - Open Heel
Dive Fins - Full Foot
Fin Accessories
Mask Snorkel Fin Sets
Mask Snorkel Sets
Mask/Snorkel Accessories
Face Masks
Hoods Gloves and Boots
Hoods
Gloves
Dive Gloves
Dry Gloves
Boots / Socks
Full Cut Dive Boots
Low Cut Dive Boots
Dive Socks
Regulators
Diving Regulators
Octopuses
Reg + Occy Sets
Sidemount Regulators
Twinset Regulators
Regulator Accessories / Parts
Regulator Hose Adaptors
Regulator Mouthpieces
Regulator Service Kits
BCDs BCs
Harness and Wing BCDs
Jacket / Rec BCs/BCDs
Rear Inflation BCDs
Womens BCDs
Backplate Systems
Sidemount Systems
BC/BCD Wings
Backplate Accessories
BC/BCD Accessories / Parts
Weights and Belts
Diving Weights
Weight Belts / Harnesses
Weight Pockets
Weight Accessories
Exposure wear
Wetsuits
Undergarments Wetsuits
Drysuits
Drysuits - Neoprene
Drysuits - Trilaminate / Shell
Drysuits - Surface
Drysuit Undergarments
Drysuit Seals
Drysuit Accessories
Tech Shorts and Pockets
Accessories and Care
Pockets and Pouches
Vests
Scuba Diving Technical
Tech Computers and Accessories
Tech Computers
Tech Computer Accessories
Shearwater Accessories
Divesoft Accessories
Garmin Accessories
Suunto Accessories
Gas Management
Helium and Nitrox Analysers
Analyser Accessories
Gas Accessories
Tech Regulators
Tech Gauges
Harness / Backplate / Wings
Tech Fins and Accessories
Exposure Wear
Tech Shorts
Adaptors / Special Fittings
HP Adaptors
LP 1st Stage Adaptors
LP 2nd Stage Adaptors
LP BCD Hose Adaptors
LP Inline Shut-Off Valves
LP Manifolds and Switch Blocks
LP Quick Disconnect Adaptors
LP Swivels and Elbows
Port Plugs and Dust Caps
O-Rings and Lubricants
Oxygen Equipment
Oxygen Delivery Systems
Oxygen Adaptors
Oxygen Analysers and Parts
Oxygen Hoses / Gauges
Rebreather Accessories
Rebreather Cylinders and Valves
Rebreather CO2 Absorbent
Rebreather Extras
Rebreather Hose Sets
Sidemount Diving
Cave and Wreck Diving
Snorkelling
Snorkelling Mask Snorkel Fin Set
Snorkelling Mask Snorkel Sets
Snorkelling Snorkels
Snorkelling Masks
Snorkelling Fins
Snorkelling Fins - Full Foot
Snorkelling Fins - Open Heel
Snorkelling Fin Accessories
Snorkelling Bags
Snorkelling Vests
Snorkelling Exposure Protection
Snorkelling Accessories
Freediving
Freediving Belts and Vests
Freediving Computers
Freediving Fins
Freediving Masks
Freediving Snorkels
Freediving Suits
Freediving Accessories
Hookah Diving
Hookah Diving Systems
Hookah Regulators
Hookah Hoses
Hookah Harnesses
Hookah Accessories
Swimming
Swimming Goggles
Swimming Goggles -Prescription
Swimming Fins
Swimming Caps
Swimwear
Swim Apparel
Swimming Accessories
Kayaking Accessories
Dry Cases / Bags
Kayaking Suits
Lanyards / Re-tractors / Leashes
Safety / Signaling Devices
SPF30+ Lycra Protection
Torches and Strobes
Shark Repellent Systems
Electronic Shark Defense Systems
Shark Shields
Hoses Hardware and Care
Various Hoses
Miflex Hoses / Accessories
Miflex Xtreme LP Regulator Hoses
Miflex Regulator Hose | Black
Miflex Regulator Hose | Blue
Miflex Regulator Hose | Green
Miflex Regulator Hose | Orange
Miflex Regulator Hose | Pink
Miflex Regulator Hose | Purple
Miflex Regulator Hose | Red
Miflex Regulator Hose | White
Regulator Hose | Carbon Black
Regulator Hose | Fluro Yellow
Regulator Hose | MellowYellow
Miflex Xtreme LP Inflator Hoses
Miflex Inflator Hose | Black
Inflator Hose | Carbon Black
Miflex Inflator Hose | Blue
Miflex Inflator Hose | Green
Miflex Inflator Hose | Orange
Miflex Inflator Hose | Pink
Miflex Inflator Hose | Purple
Miflex Inflator Hose | Red
Miflex Inflator Hose | White
Miflex High Pressure Gauge Hoses
Miflex XT-Tech Regulator Hoses
Miflex XT-Tech Inflator Hoses
Miflex Gauges
Miflex Accessories/Tools
Miflex Hose Adaptors
Rubber Scuba Hoses
Rubber HP Hoses
Rubber BC Inflator Hoses
Rubber Regulator Hoses
Hardware
Clips / Snaps
D-Rings / Slides / Clamps
Quick Links and Rings
Quick Release Buckles
Screws and Nuts
Surgical Tubing and Bungee Cord
Webbing
Accessories
Gear Aid Cleaning / Care
Cleaning / Care
Dive Accessories
Dive Gear Hangers
Dive Slates
Dive Tools
Jon Lines / Reef Hooks
Lanyards / Retractors
Other / Various
Photography and Lighting
Underwater Photo / Video
Underwater Photo / Video Package
Underwater Camera Housings
Strobes / Focus Lights
Underwater Video Lights
Lenses and Filters
Arms Trays and Mounts
Underwater Camera Bags
Photo/Video Accessories
Lights / Torches
LED Dive Lights
Video / Photo Dive Lights
Canister Dive Lights
Strobe Dive Lights
Lightsticks and Marker Lights
Dive Light Accessories / Parts
Computers Gauges and Compasses
Batteries
Dive Computers
Diving Consoles
Analogue Gauges
Underwater Compasses
Instrument Accessories / Parts
Analox Gas Detection
Apparel
Above Water Wear
Exposure wear
T-Shirts Hats and Caps
Bags
Dive Gear and Travel Bags
Dry Bags
Dry Storage Solutions
Waterproof Camera/Phone/Key Case
Waterproof Dry Canisters
Waterproof Hard Cases
Catch Bags
Drawstring Bags
Fin Bags
Regulator Bags
Safety and Rescue
Flags / Floats
Knives / Shears / Cutters
Dive Knives
Shears and Line Cutters
Knife Accessories
Lift Bags / Reels / SMBs
Dive / Wreck / Cave Reels
Dive Finger/Jump Spools
Lift Bags
Line Arrows and Cookie Markers
Surface Marker Buoys (SMBs)
Rescue / Safety / Signal
Dive Flags
Emergency Air Systems
First Aid and Safety
Nautilus Lifeline / PLBs
Oxygen Delivery
Safety Strobes / Lights
Signalling Devices
Surface Markers
Slates / Wetnotes
Emergency Air Systems
Cylinders Tanks
Steel Cylinders
Aluminium Cylinders
Air Gun Scuba Cylinders
Valves / Manifolds
Cylinder Accessories / Parts
Cylinder Stage/Deco Accessories
Twin Cylinder Bands
Cylinder Stickers
Spearfishing and Hunting
Spearfishing
Spearfishing Bags
Spearfishing Boots and Socks
Spearfishing Fins
Spearfishing Floats and Lines
Spearfishing Gloves
Spearfishing Hoods
Spearfishing Knives
Spearfishing Masks
Spearfishing Snorkels
Spearfishing Spearguns
Spearfishing Hawaiian Slings
Spearfishing Rubber
Spearfishing Shafts and Points
Spearfishing Suits
Spearfishing Accessories
Hunting and Gathering
Commercial
Commercial Diving Suits
Harnesses and Backpacks
Books Gifts and Certificates
Gift Certificates
Gift Ideas / Novelties
Logbooks
Books
Marine IDs and Maps
Photographic Prints
Dive Club
New Products
All Brands …
Clearance
35% Kids Kit Discounts
AVATAR Run Out Sale
All Products ...
Information
About Us
Dive Facilities
Mad For Marine Life Photo Contest
Meet The Team
OHS Policy and Risk Assessment
Coronavirus COVID-19 Restrictions
Why We Are Different
Online and Local
Everyday Low Prices
Government and Education Orders
Specialty Store vs Big Box Store
Free Wi-Fi
Environmental Policy
Work With Us
Scuba Doctor Newsletters
Traditional Owners
Contact Us
Legal Notices
Opening Hours
Privacy Policy
Visit Our Rye Store
Sharing at The Scuba Doctor
Colophon
Search this site
Site Map
Dive Club
Dive Resources
Diving and Coronavirus
Disinfecting Your Diving Equipment
Guidance On Coronavirus
Melbourne Dive Sites
Melbourne Dive Sites Map
Melbourne Dive Site GPS Marks
Dive Sites Index
Melbourne Pier Dives
Melbourne Shore Dives
Melbourne Wreck Dives
ex HMAS Canberra Wreck Dive
Victorian Ships Graveyard Wreck Dives
J Class Submarine Wreck Dives
Port Phillip Heads Shipwreck Dives
Port Phillip Wreck Dives
Phillip Island Wreck Dives
Underwater Shipwreck Discovery Trail
West Coast Shipwreck Trail
Victoria Wreck Dives
Victorian Shipwreck Protected Zones
Melbourne Boat Dives
Melbourne Bommie Dives
Melbourne Drift Dives
Melbourne Reef Dives
Melbourne Wall Dives
Melbourne Abalone Dives
Melbourne Cray Dives
Melbourne Scallop Dives
Melbourne Sea Urchin Dives
Melbourne Other Dives
Phillip Island Dives
Wilsons Promontory Dives
Recent Dive Sites
Dive Site Help
Snorkelling in Melbourne
Melbourne Snorkelling Sites
Snorkelling the Intertidal Zone
Spearfishing in Melbourne
Melbourne Spearfishing Sites
Victorian Marine Protected Areas
Great Southern Reef
Giant Spider Crabs Melbourne
Weedy Seadragons Melbourne
Facebook for Melbourne Divers
Sydney and NSW Dive Sites
Diving Articles
Breathing Gas Quality
Cylinder Testing
How To Catch Crayfish
How to Catch Sea Urchin
Victorian Diving
Love Your Local Diving
Diving the Nuclear Ghost Fleet at Bikini Atoll
GPS Conversions
8th Wonder Fantasy Hole
Bikini Atoll Nuclear Target Fleet
From Hermes To Saratoga
Caverns Measureless to Man
Liability Waivers
Choosing a Reliable Online Scuba Store
Lessons To Be Learnt
USS Saratoga (CV-3)
Bikini Atoll 2005
Trimix Comes To Rye, Victoria
Channel Deepening
Tales From The Deep
Trouble Brewing at the Bottom of the Bay
How to Catch Abalone
How To Cook Crayfish
Frequently Asked Questions
Diving and Snorkelling Downloads
Scuba Equipment Manuals
Dive Links
Magazines and Periodicals
Dive Charters
Dive Clubs
Diving Related
Enviromental Groups
Manufacturers and Distributors
Organisations and Institutions
Underwater Photography
Melbourne Web Cams
Melbourne Boat Launching Ramps
Scuba Diving Glossary
Dive Forums
Scuba Diving Safety
Wind Factors For Diving
Weather, Tides, Conditions etc.
AIS Marine Traffic Melbourne
Dive From Your Own Boat in Melbourne
Boat Diver Safety Briefings
Boat Diving Safety
Seamanship
Diving in Melbourne Currents
Diving the Back Beaches
Diving in Bass Strait
Diving in Southern Ocean
Diving Near The Rip
Diver Communications
Underwater Hand Signals
Diver Rope Signals
Marine Flag Signals
Marine Radio Operation
Diver Emergency
Using a Dive Float and Flag
Dive Site Selection
Dive Trips
Far North QLD Coral Sea Exploration
Far North Coral Sea Exploration Brochure
Melbourne Boat Diving Schedule
Divers Alert Network
Scuba Equipment Rental
Travel
Guided Dives
FAQs About Melbourne Diving
Litres, Metres and Bar
Guided Dives With Blue-Ringed Octopus
Guided Dives With Giant Spider Crabs
Guided Dives With Nudibranchs
Guided Dives With Seahorses
Guided Dives With Weedy Seadragons
Courses
Dive Instructors
Scuba Diving Myths
Diving Medical
Technical Diving
Course Equipment
Discover Local Diving
Dive Course FAQs
Learn to Dive in Melbourne
Private Lessons
Refresher Course
PADI Courses
PADI Digital Underwater Photographer
PADI Night Diver
PADI Peak Performance Buoyancy
PADI Deep Diver
PADI Wreck Diver
PADI Discover Scuba Diving
PADI Open Water Diver Course
PADI Advanced Open Water Diver
PADI Enriched Air Diver (Nitrox)
PADI ReActivate Scuba Refresher
Advice
Why Buy Scuba Equipment?
Holiday Gift Guides
Treat Yourself
Holiday Diver Must-Have Gifts
Great Gifts for Scuba Divers
The Adrenaline Junkie Gift Ideas
Best Gifts For Freedivers
The Hunter Gift Guide
The Environmentalist Gift Guide
Start Them Young
The Tankless Diver
The Tech Diver Gift Guide
Snorkel Family Gift Guide
The Photographer Gift Guide
Scuba Buying Guides
Buying a Scuba Diving BCD
Scuba Fins Buying Guide
Buying a Scuba Cylinder
Buying Dive Regulators
Dive Weights Buying Guide
Buying a Dive Computer
Dive Reel Buying Guide
Buying Dive Boots
Dive Light Buying Guide
Buying a Snorkel
Dive Hood Buying Guide
Watertight Hard Cases Buying Guide
Dive Gloves Buying Guide
Underwater Noisemaker Buying Guide
Must Have Tools for a Safe Dive
Dive Compass Buying Guide
Buying Scuba Diving Hoses
Buying a Dive Knife
Scuba Diving O-Rings
Buying an Emergency Air Source
Dive Bag Buying Guide
Top Recreational Scuba Gear
Buying the Best Dive Mask
Buying a Wetsuit or Drysuit
Scuba Gift Guides
Valentines Day Gifts for Scuba Divers
Scuba Doctor Holiday Gift Guide 2021
Scuba Doctor Holiday Gift Guide 2020
Scuba Doctor Holiday Gift Guide 2019
Scuba Doctor Holiday Gift Guide 2018
Scuba Doctor Holiday Gift Guide 2017
Scuba Doctor Holiday Gift Guide 2016
Scuba Doctor Holiday Gift Guide 2015
Scuba Doctor Holiday Gift Guide 2014
Scuba Doctor Holiday Gift Guide 2013
Trusted Scuba Advice
BCD Features
Scuba Fins
Wetsuit Donning Guide
Nitrox Fills and O2 Cleaning Cylinders
How to Thread a Tank Cam Band Buckle
Regulator Features
Perfect Scuba Diving Weighting
How to Thread a Weight Belt Buckle
Snorkel Features
Save a Dive Kit
Buoyancy Control
Scorkl Dangers
How to Deploy a SMB
Fixing Underwater Vision Problems
Assembling Twin Cylinders
Scuba Diving Gas Analysis
Avoiding Mask Squeeze
Scuba Mask Features
Selected Product Range
Rebreathers
Scuba Diving Checklist
Introduction to Hookah Diving
Beginners Spearfishing Gear
Essential Spearfishing Gear
Trusted Snorkelling Advice
How Much Lead Weight Should I Wear?
Full Face Snorkel Mask Dangers
Goggles vs Masks
Snorkelling Holiday Gift Guide 2019
Snorkelling Holiday Gift Guide 2018
How to Enter and Exit the Water
How to Familiarise Your Kids to Snorkelling
Snorkelling Limits and Safety Precautions
Snorkelling with a Moustache
Using Your Snorkelling Gear
What Snorkelling Gear Do You Need
Snorkelling Fins Buying Guide
Prescription Goggles for Swimming
Holiday and Gift Giving
Underwater Photography and Videography
Underwater Camera Buying Help
Best Underwater Cameras and Housings
Camera Housing Maintenance
Recommended Lenses for Underwater Photography
Underwater Camera Arms and Trays
Port and Gear Chart Links
Home
Service & Repairs
BCD Servicing
Service Policy
Scuba Safety Alerts
Bespoke Scuba Fitting Service
Holiday Dive Gear Hire
Air and Nitrox Fills
Nitrox Calculator - Requested Mix
Nitrox Calculator - Top Up Mix
Trimix Calculator - Best Mix
Trimix Calculator - Requested Mix
Trimix Calculator - Top Up Mix
Cylinder Oxygen Cleaning
Scuba Cylinder Testing
Dive Computer Battery Change
Equipment Care and Maintenance
Fin Care
Scuba Cylinder Care
Buoyancy Compensator Care
Dive Mask Care
Drysuit Care
How to Effectively Maintain Your Drysuit
Wetsuit Care
Dive Light Care
Snorkel Care
Diving Retractor Care
Dive Computer Care
Gear Bag Care
Catch Bag Care
Regulator Care
Caring For Scuba Diving Hoses
How Often Should I Get My Dive Gear Serviced?
Pre-Season Checklist - Regulators
care-pre-season-everything-else.htm
Dive Knife Care
Regulator Servicing
Wetsuit and Drysuit Repairs
Victorian Dive Sites Map
