Ocean Reef : Picture 1 regular $307.00

About Ocean Reef 1st Stage Regulator for Neptune Space, Yoke

The Ocean Reef high performance balanced diaphragm 1st-stage regulator is specifically designed for use with the Neptune Space Full Face Mask. The regulators use a diaphragm design to create an environmentally sealed mechanism to ensure durability and high performance even in contaminated water. The balanced diaphragm, chrome plated marine brass first stage regulator is inherently environmentally sealed. The benefit of this type of first stage design is that none of the delicate internal parts are exposed to contaminants such as salt, sand, chlorine or pool acids. These environmental contaminants can cause corrosion and mineral deposits to form on the internal mechanism deteriorating regulator performance.

With the SL35TX there is a Secondary Environmental Diaphragm Membrane that seals off the spring chamber keeping the first stage completely sealed off from the environment adding a second layer of corrosion resistance and prevention of freezing in cold water use. The regulator has an adjustable intermediate pressure to meet varying supply pressure requirements. The body of the regulator is made of marine grade brass with a satin body finish and internally has a stainless steel piston, Teflon seat, and stainless steel spring. Standard yoke connection 3000 psi (200 bar) with 2 high pressure ports 7/16-20 UNF and 4 low pressure ports 3/8-24 UNF with a superior flow rate of approx. 170 cubic feet per minute (4800 l/m) at 2030.5 psi (140 bars). Regulator is covered by a 24 month limited warranty.

Warranty Information

This product has a limited warranty of 24 months.

(800) 922-1764

Ocean Reef 1st Stage Regulator for Neptune Space, Yoke Features

  • Ocean Reef First Stage Regulator (SL35TX)
  • Balanced Diaphragm Design
  • Two 7/16-20 UNF High Pressure (HP) Ports
  • Four 3/8-24 UNF Low Pressure (LP) Ports
  • Body: Chromed Satin Finish, Marine Grade Brass
  • Components: Piston & Spring are Stainless Steel
  • Seat: Durable Teflon
  • Environmentally-Sealed:
    Delicate Internal Parts Not Exposed to Contaminants
    Contaminates: Salt, Sand, Chlorine or Pool Acids
    Secondary Diaphragm Membrane, First Stage Completely-Sealed-Off
    Second-Layer of Corrosion Resistance
    Prevention of Freezing in Cold-Water-Use
  • Standard Yoke Connection 3000 psi (200 bar)
  • 2 Year Limited Warranty

Ocean Reef 1st Stage Regulator for Neptune Space, Yoke Specifications

1'st Stage Type
Balanced Diaphragm
LP Ports
Four 3/8-24 UNF
HP Ports
Two 7/16-20 UNF
Body: Chromed Satin Finish, Marine Grade Brass, Components: Piston & Spring are Stainless Steel, Seat: Teflon
Weight [with packaging]
2.2 lb
Mfr #

1st Stage Regulator for Neptune Space, Yoke Customer Reviews

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Ocean Reef 1st stage SL35TX Yoke for Neptune Space

(based on 1 review)

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Reviewed by 1 customer

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Good product

By Mike

from Fort Worth, TX

About Me Casual/ Recreational

See all my reviews

Verified Buyer



      Best Uses

      • Open Water Diving

      Comments about Ocean Reef 1st stage SL35TX Yoke for Neptune Space:

      I achieved the PADI Full Face Mask specialty using the Ocean Reef Neptune Space full face mask. I was diving with it attached to another 1st stage. After the dive I realized that the Ocean Reef 1st stage was critical to the best performance of the mask, so I bought this one. The entire Ocean Reef full face mask system is the finest that I have ever used. I strongly recommend it to anyone who wants the best dive experience possible.

      • Sizing:
      • Feels true to size
      • Was this a gift?:
      • No

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      Questions & Answers Powered by TurnTo®

      Questions about this item:

      BRANDON W  Do you have to have this first stage to use with the full face mask or can i just use my regular first stage?
      Brett H  You may use this first stage if you need an extra or want a separate setup, but the one you have will work just fine too.
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