Hollis Complete Regulator Set – 500SE + DC7 DIN Regulator + 150LX Octopus + Compact SPG
Hollis Complete Regulator Set – 500SE + DC7 DIN Regulator + 150LX Octopus + Compact SPG - DIN / 6" is backordered and will ship as soon as it is back in stock.
What's in this bundle
You save $112.49 (10%) vs buying separately
Hollis Complete Regulator Set – 500SE + DC7 DIN Regulator + 150LX Octopus + Compact SPG - DIN / 6" is backordered and will ship as soon as it is back in stock.
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Product Information
This regulator set is built around the Hollis 500SE + DC7 DIN, a first and second stage pairing designed for demanding dive conditions. The DC7 first stage uses an over-balanced diaphragm design that keeps intermediate pressure stable as depth and gas density increase, with environmental sealing to keep out corrosion, contaminants, and icing, a CE coldwater rating, and Nitrox compatibility to 40%. It carries 2 high pressure and 4 low pressure ports with fixed hose routing for backmount or sidemount setups, and connects via DIN 300 bar (choose DIN or Yoke to match your tank valve). The 500SE second stage pairs with it through a pneumatically balanced servo valve system for consistent airflow, an orthodontic mouthpiece to ease jaw fatigue, a 30 in. maxflex hose, and tool-free disassembly for servicing.
Backing up the primary is the Hollis 150LX Stainless Steel Octopus, built around the same pneumatically balanced, chrome-plated brass valve architecture for smooth, easy breathing. Its demand valve is reversible for left- or right-hand hose routing, the Dive/Pre-Dive switch uses a large Venturi lever with a soft rubber grip, and ergonomic exhaust channels move bubbles clear of your field of view. MiFlex braided hose construction and a stainless steel cosmetic ring round it out for coldwater reliability.
Rounding out the set is the Hollis High Pressure Hose for SPG, which runs from your first stage to a submersible pressure gauge. It's a braided hose with a rubber jacket and corrosion-resistant chrome-plated brass fittings, terminating in a 7/16" male thread with O-rings included for installation. It's available in 6", 9", 24", and 28" lengths, so you can pick a short length for a stage bottle or a longer one for your primary gauge. Together, the first stage, second stage, octopus, and gauge hose give you a complete, matched air-delivery setup from a single brand.
- DC7 first stage: over-balanced diaphragm design keeps intermediate pressure stable as depth and gas density increase
- Environmental sealing: helps prevent internal corrosion, contaminants, and icing, with a CE coldwater rating
- 2 HP / 4 LP ports: fixed hose routing, DIN 300 bar connection, Nitrox compatible to 40%
- 500SE second stage: pneumatically balanced servo valve system for consistent airflow, with a 30 in. maxflex hose and tool-free disassembly
- 150LX Octopus valve: pneumatically balanced, chrome-plated brass for smooth, easy breathing
- Reversible demand valve: converts the octopus between right- and left-handed hose configurations
- High Pressure Hose for SPG: braided hose with rubber jacket and corrosion-resistant chrome-plated brass fittings, available in 6", 9", 24", and 28" lengths
- Choose your fit: select DIN or Yoke for the first stage connection and the hose length that matches your stage bottle or primary gauge setup
- One matched system: primary regulator, backup octopus, and gauge hose from Hollis, sized and configured to work together for backmount or sidemount, air or trimix diving
| Hollis 500SE + DC7 DIN | |
| Brand | Hollis |
| Model | 500SE with DC7 first stage |
| First Stage | DC7 over-balanced diaphragm |
| Connection | DIN 300 bar |
| HP Ports | 2 |
| LP Ports | 4, fixed hose routing |
| Environmental Sealing | Sealed against corrosion, contaminants, and icing |
| Cold Water | Meets CE coldwater standard |
| Gas Compatibility | Nitrox to 40% |
| Configurations | Backmount and sidemount |
| Hollis 150LX Stainless Steel Octopus | |
| Brand | Hollis |
| Model | 150LX Octopus |
| Product Type | Octopus / alternate air source |
| Valve | Pneumatically balanced, chrome-plated brass |
| Demand Valve | Reversible for left or right hose routing |
| Venturi | Adjustable Dive/Pre-Dive lever with rubber grip |
| Exhaust | Ergonomic channels direct bubbles clear of the field of view |
| Mouthpiece | Orthodontic with dual color tabs |
| Trim | Stainless steel cosmetic ring |
| Hose | MiFlex braided |
| Cold Water | Suitable for coldwater diving |
| Hollis High Pressure Hose for SPG | |
| Brand | Hollis |
| Product Type | High pressure hose for SPG |
| Lengths | 6 in (15 cm), 9 in (23 cm), 24 in (61 cm), 28 in (71 cm) |
| Construction | Braided hose with rubber jacket |
| Fittings | Corrosion-resistant chrome-plated brass |
| Threading | 7/16 in male |
| Included | O-rings for installation |
| Use | Short lengths for stage bottles; long lengths for a primary pressure gauge |
- Hollis 500SE + DC7 DIN
- Hollis 150LX Stainless Steel Octopus
- Hollis High Pressure Hose for SPG
Frequently Asked Questions
What are the specs of the Hollis DC7 first stage?
The DC7 is an over-balanced diaphragm first stage built to hold a stable intermediate pressure as depth and gas density increase, with fixed hose routing for backmount or sidemount setups. It's environmentally sealed against corrosion, contaminants, and icing, meets the CE coldwater standard, and is Nitrox compatible to 40%. It has 2 high-pressure ports and 4 low-pressure ports with a DIN 300 bar connection.
What do you get with the Hollis 500SE + DC7 regulator?
It pairs the DC7 first stage with the 500SE second stage, which uses a pneumatically balanced servo valve for smooth, consistent airflow and is designed for air and trimix diving in a side-exhaust configuration. The 500SE has a patented orthodontic mouthpiece, a 30 in. maxflex hose, tool-free disassembly, and can be set up for left- or right-hand use with a boltsnap tie point. Both stages are built for backmount and sidemount configurations.
Does the Hollis 150LX octopus work with the 500SE + DC7 regulator?
Yes, this bundle pairs the 150LX Stainless Steel Octopus with the 500SE + DC7 set. The 150LX uses a pneumatically balanced chrome-plated brass valve and MiFlex braided hose, with a reversible demand valve so it can be set up for left- or right-hand routing, an adjustable Dive/Pre-Dive switch, and an orthodontic mouthpiece. It's suitable for coldwater diving, matching the coldwater-rated DC7/500SE set.
What's included in this bundle, and does it come with the SPG gauge itself?
The bundle includes the Hollis 500SE + DC7 DIN regulator (first and second stage), the Hollis 150LX Stainless Steel Octopus, and a Hollis High Pressure Hose for SPG. Note that it's the hose only, not the gauge itself — the hose is designed to connect to a Hollis Submersible Pressure Gauge (e.g. SKU HLSPGM), which is sold separately.
How fast will this ship, and what's the return policy?
Orders over our free-shipping threshold ship free with next-day delivery; check the product page for the exact delivery date shown at checkout. Returns are covered under our standard DiveCatalog returns policy.
