Poseidon 2nd Stage Xstream 9/16 Deep Nitrox
See all Poseidon items

Poseidon Xstream Deep Second Stage, Black

SKU: POSX2S MFR: 0120-000
Be the first to review this item
$269.00
$334.95
Save: $65.95 (20%)
OR
$45/mo suggested payments with 6‑month special financing. Learn how.
Earn VIP Reward Points

Key Features

  • Dive confidently with the Poseidon Xstream 2nd Stage, built for reliable deep dives.
  • Enjoy effortless breathing at any depth thanks to the innovative servo-valve design.
  • Crafted with durable materials, this regulator ensures longevity and top performance.
  • Nitrox ready! Safely use gas mixtures up to 40% oxygen with this versatile regulator.
  • Compact & balanced design minimizes jaw fatigue, enhancing your overall dive experience.
  • Upgrade your scuba gear with Poseidon's Xstream, a 2nd stage known for its quality.
See More Product Details
Special Order?Estimated to Ship: 06/26/2026Request assistance or get notified

Final Sale - No Returns or Exchanges

Free Shipping

See Options

1
Add to ListGet Sale Alert

Save 5% Every Day† with the Scuba.com Edge Card. Learn More

edge card

Need help? Ask our experts.

Overview
Compare
Specs
Protection

Reviews about this item

Review Summary

Poseidon 2nd Stage Xstream 9/16 Deep Nitrox Specifications

  • Nitrox Compatible

    Yes, Mixtures Containing Helium (He) & Maximum O2 Content of 40%

  • 2'nd Stage Type

    Upstream Servo-Valve Design

  • Materials

    Housing PVC, Internal Mechanism Brass, Stainless Steel and Rubber

About Poseidon 2nd Stage Xstream 9/16 Deep Nitrox

The Poseidon 2nd Stage Xstream 9/16 Deep Nitrox Regulator uses an upstream servo-valve design with a safety valve opening pressure of 261 +/- 14 psi (18 +/- 1 bar) relief pressure. The second stage has a durable PVC housing with metal mechanism and rubber parts. The regulator has an automatic Venturi assist and inhalation control. The Xstream Deep: rated for use down to 656' (200 meters) and for use with mixtures containing helium (He) and a maximum O2 content of 40%. Color coded Black to avoid confusion with other gas mixes.

Poseidon 2nd Stage Xstream 9/16 Deep Nitrox Features

  • Poseidon 2nd Stage Xstream 9/16 Deep Nitrox:
  • Super High-Flow Design
  • Flow Rate: 76 Standard Cubic Feet per Minute (SCFM) Flow of Gas (2,150 liters per minute)
  • Safety Valve Opening Pressure of 261 +/- 14 psi (18 +/- 1 bar)
  • Upstream Servo-Valve Design
  • Materials: Durable PVC Housing with Brass and Stainless Steel Mechanism and Rubber Parts
  • Automatic Venturi Assist and Inhalation Control
  • Rated for Use Down to 656' (200 meters)
  • Use w/Mixtures Containing Helium (He) & Maximum O2 Content of 40%
  • Color Coded Black

Warranty Information

This product has a limited warranty of 24 months.

Best Price Guaranteed + 5% OFF

Submit a price match

30/90 FREE Returns

Worry-free returns

Sell your Used Gear

Get started in 3 easy steps

Key Features

  • Dive confidently with the Poseidon Xstream 2nd Stage, built for reliable deep dives.
  • Enjoy effortless breathing at any depth thanks to the innovative servo-valve design.
  • Crafted with durable materials, this regulator ensures longevity and top performance.
  • Nitrox ready! Safely use gas mixtures up to 40% oxygen with this versatile regulator.
  • Compact & balanced design minimizes jaw fatigue, enhancing your overall dive experience.
  • Upgrade your scuba gear with Poseidon's Xstream, a 2nd stage known for its quality.

What's in the box:

  • Poseidon 2nd Stage Xstream 9/16 Deep Nitrox