3/8" Male to 7/16" Female Regulator Adapter (AA51)
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3/8" Male to 7/16" Female Regulator Adapter (AA51)

SKU: AQUHAC MFR: AA51 12410
(9)3 questions, 14 answers
$14.95

Key Features

  • Adapt your vintage regulator easily with this durable 3/8" to 7/16" adapter.
  • Chrome-plated brass adapter ensures reliable, high-pressure connections (3,442 psi).
  • Convert your 1st stage HP port effortlessly using this compact regulator adapter.
  • This HP adapter is designed for seamless compatibility with vintage regulator 1st stages.
  • Enjoy easy setup; this 3/8" male to 7/16" female adapter simplifies your diving gear.
  • Rely on this robust regulator adapter for secure & leak-free high-pressure connections.
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Q&A

Questions & Answers

Shopper : Hello, would this fit onto the hookah port on a vintage DA Aquamaster regulator?Jeff B : It worked on a late seventy scuba pro mark iv regulator to couple to a current pressure gauge.Mario C : not sure of the measurements on that double hose reg. This adapter is 3/8" Male to 7/16" Female
Shopper : what is the thread count on each end? I'm looking to have the 7/16 end at 20 and the 3/8 end at 24. If that is so, I will by this part.BOB H : Yes the 3/8 Male (24 treads per inch) to the 7/16 Female (20 treads per inch) adapter is what your asking for. All the Scuba adapters i've purchased are the fine tread or they will state otherwise.SEAN K : 3/8 x 24 to 7/16 x 20, lets you use old regs with new gaugesPHILIP S : I am sorry, I don't have this gear anymoreDANIEL H : Yes, 7/16-20, 3/8-24.JOHN M : The answer is Yes, I know for a fact the 3/8 is a 24 count. and I think the think the 7/16 is 20. If you are going to use for a old style ist stage to a newer SPG , buy it.... Jack Murphy ,Florida, Keys . 305-664-8019ROBERT R : It works just fine i had no leaks
Shopper : Why Did You Choose This?AARON M : Converting a 3/8” HP port on a vintage Aqualung Calypso IV to add a 7/16” adapter/splitter for modern pressure gauge and transmitter.JASON D : Because I have an old consul with a 7/16 hose and a newer decor first stage that only had 3/8 portsERIC C : Purchased a brand new Submersible pressure gauge and need adapter to connect it to my old US Divers Conshelf XIV regulator that I've had for nearly 30 years.GARRY S : Newer 1st stage regulators have a 3/8" HP hose hole, while low pressure holes are 15/16" so they can not be confused. Old Aqua-Lung regs had a 3/8" high pressure hole, so to attach an old pressure gage HP hose to a newer regulator, it takes this adapter.Douglas M : I have an older USD regulator with a HP port that is 3/8" & I have HP hoses with a 7/16" thread. Rather than buy new hoses I decided to buy an adapter insteadMR A : Hi name is Bruno Andujar,I am Scuba Diver. I bought this item because the price and quality is good. I will use for my dive school and shop as well.

Reviews about this item

Review Summary

2021-10-18T16:21:58

Rated 5 out of 5

High press. Port adapter

Needed adapter for old type 1st stage high pressure port, this item fit the bill perfectly.

GARY D.

2020-06-03T19:26:01

Rated 5 out of 5

Perfect Fit

Fit perfectly and was shipped quick????

Ryan M.

2019-08-21T11:24:31

Rated 5 out of 5

Adapter

Needed adapter to go from a 3/8 HP to a 7/16. Works great

DOUGLAS M.

2019-03-03T10:03:38

Rated 5 out of 5

Great Solution

Makes old reg's take current fitting sizes

KYLE B.

2018-06-13T12:10:53

Rated 5 out of 5

It works!

Transformed my old Dacor Olympic 800 to where it will accept a modern pressure gauge! Perfect!! G

GEORGE M.

2013-09-11T20:00:00

Rated 5 out of 5

Works as Designed

Basic reducer-adapter to allow HP installation of "button" type pressure gauge on older regulator. Perfect for use on a hookah rig.

SeaWolf

2012-08-26T20:00:00

Rated 5 out of 5

Small Size...............Big Results

Delivery was fast and prompt. Could not ask for better service!!

Fishbo

2011-10-03T20:00:00

Rated 5 out of 5

accurate

reasonably priced

2007-10-09T20:00:00

Rated 5 out of 5

Saved a dive!

Perfectly snug adapter. (Added one year to my old gear while I worked on upgrading.)

Scuba G.

3/8" Male to 7/16" Female Regulator Adapter (AA51) Specifications

  • Purpose

    Converts 1'st Stage 3/8"Threaded HP Port to 7/16" Threaded HP Port

  • HP or LP

    HP

  • Materials

    Chrome Plated Brass

  • Compatibility

    Vintage Regulator 1'st-Stage w/3/8" Threaded HP Ports

  • Thread Size

    3/8" Male to 7/16"

  • Working Pressure

    3,442 psi (237 bar)

  • UPC Code

    618152000078

About 3/8" Male to 7/16" Female Regulator Adapter (AA51)

FEATURED REVIEWS

High press. Port adapter

By GARY D.

Needed adapter for old type 1st stage high pressure port, this item fit the bill perfectly.

Perfect Fit

By Ryan M.

Fit perfectly and was shipped quick????

Still diving with that old regulator? Did your 3/8" pressure gauge hose die and you can't find a 3/8" replacement hose? Don't retire your trusted pal just because all pressure gauges now have 7/16" hoses. This adapter is just the item you need to prolong the life of your trusty old regulator. Adapter has 3/8" male threaded end that will fit your older model first-stage with 7/16" female to accept the new HP hose standard. Adapter is made of marine chrome plated brass for strength and durability and comes with standard HP hose O-ring so it's ready for installation. Adapter is designed for 3,442 psi (237 bar) service pressure.

3/8" Male to 7/16" Female Regulator Adapter (AA51) Features

  • 3/8" Male to 7/16" Female Regulator Adapter
  • Allows Use of 7/16" Hose in 3/8" Port
  • Great Item for Vintage Regulators
  • Marine Grade Chromed Brass Construction
  • Equipped w/O-Ring
  • Great Save-A-Dive-Kit Item
  • The Dive You Save May Be Your Own!

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Key Features

  • Adapt your vintage regulator easily with this durable 3/8" to 7/16" adapter.
  • Chrome-plated brass adapter ensures reliable, high-pressure connections (3,442 psi).
  • Convert your 1st stage HP port effortlessly using this compact regulator adapter.
  • This HP adapter is designed for seamless compatibility with vintage regulator 1st stages.
  • Enjoy easy setup; this 3/8" male to 7/16" female adapter simplifies your diving gear.
  • Rely on this robust regulator adapter for secure & leak-free high-pressure connections.

What's in the box:

  • 3/8" Male to 7/16" Female Regulator Adapter