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Five complete regulator sets covering backmount technical, sidemount, twin-tank manifold, and oxygen deco configurations. Sets include Mercurio ICE/Venere and Plutone ICE/Venere matched pairs for backmount technical use, purpose-built Sidemount and Twin tanks sets with appropriate first stage port configurations, and the Oxygen deco regulator for high-fraction O₂ deco bottles.
Pre-Matched Regulator Systems
Selecting a regulator set rather than individual components ensures the first stage and second stage are matched by the manufacturer for consistent breathing performance and compatible intermediate pressure delivery. For technical diving configurations — sidemount, twin-tank manifold, and multi-stage setups — pre-assembled sets also confirm port configurations are appropriate for the specific application without requiring the buyer to verify individual compatibility.
The Sets
The Mercurio ICE/Venere ADJ (SKU 602330/1) pairs the ICE cold-water rated balanced first stage with the Venere balanced adjustable second stage. Available in two variants, this is the primary technical backmount matched set — both components are specified for technical diving and cold water service. The Plutone ICE/Venere ADJ (SKU 602320/1) provides the same second stage matched with the Plutone ICE first stage; two variants again. Both backmount sets are positioned for manifolded doubles or single-cylinder technical configurations where cold water performance is required.
The Sidemount set (SKU 605265/1-6, 819–829 €) is a purpose-configured system for sidemount diving. It includes first stages with appropriate LP port layouts for side-mounted cylinder valves and second stage routing to chest-clipped positions. Six variants accommodate different cylinder valve and finish combinations. The Twin tanks set (SKU 650000/1-16, 759–779 €) is the most extensive product in this category — 16 variants covering different first stage combinations, manifold configurations, and finish options for manifolded backmount doubles setups. The price range reflects the two-first-stage, two-second-stage content of the set.
The Oxygen deco regulator (SKU 602350, 199 €) is a standalone oxygen-dedicated complete regulator for deco bottle use. Factory oxygen-cleaned and prepared for high-fraction O₂ gas, it provides a compact, clearly marked deco bottle regulator without requiring the diver to oxygen-clean their primary equipment.
What to Look For
- Match your configuration: Twin tanks sets are configured for manifolded backmount doubles; sidemount sets for side-mounted cylinders with independent valves. Using a backmount twin-tank set in a sidemount configuration means wrong hose lengths and potentially insufficient LP ports for the routing.
- Variant count: The Sidemount set has 6 variants and the Twin tanks set has 16 — differences include DIN/INT valve compatibility, finish, and first stage model. Review the product detail page to identify which variant matches your cylinder valve specification and finish preference.
- Oxygen deco vs. oxygen-cleaning primary equipment: If you carry an O₂ deco bottle, a dedicated oxygen-prepared regulator is safer and simpler than tracking the oxygen-clean status of your primary equipment. The Oxygen deco regulator is the purpose-built solution.
- ICE rating for cold water: Both the Mercurio ICE/Venere and Plutone ICE/Venere sets carry ICE cold-water ratings on the first stage. If your diving is in warm or temperate water, the Plutone standard set may be sufficient; for cold water technical diving, ICE is the appropriate specification.
- Hose set compatibility: Complete sets typically include hoses, but verify which hose lengths are included with the specific variant. Technical configurations often require different hose lengths than those supplied in standard recreational sets.
Maintenance and Care
Maintain complete sets as two separate components — first stage and second stage — each with their own annual service schedule and model-specific service kits. The sets do not require simultaneous service; however, having both serviced in the same annual cycle simplifies scheduling. For sidemount and twin-tank sets, verify intermediate pressure on both first stages after service to confirm they are matched within specification. The Oxygen deco regulator requires oxygen-compatible service procedures and lubricants at each service interval — use Christo Lube MCG 111 and keep all tools used on the oxygen regulator free from hydrocarbon contamination.
FAQ
What is the difference between the Sidemount set and Twin tanks set?
The Sidemount set is configured for side-mounted cylinders with independent valves — typically two cylinders worn one on each side, each with its own first stage and second stage. The Twin tanks set is for manifolded backmount doubles — two cylinders linked by a manifold with an isolator valve, sharing gas between them, typically using two first stages mounted on separate valve manifold ports. The two configurations are fundamentally different in how cylinders are carried, mounted, and gas-managed.
Does the Twin tanks set include everything needed for a doubles setup?
The Twin tanks set provides the regulator components — first stages and second stages in the appropriate configuration for manifolded doubles. It does not include cylinders, manifold, backplate, wing, or harness. Those components are found in the BCD and Tanks categories. Review the specific variant to confirm what hoses and connections are included before ordering.
Is the Oxygen deco regulator suitable for travel (stage) bottles with nitrox?
Yes. An oxygen-cleaned regulator is suitable for any oxygen fraction up to 100% O₂, including all nitrox mixes. The Oxygen deco regulator is oxygen-cleaned from the factory and appropriate for EAN50, EAN80, 100% O₂, and any mix in between. Maintain its oxygen-clean status by storing it separately from non-oxygen equipment and not using it with air or standard nitrox mixes if you intend to preserve that status.
Why are there so many variants of the Twin tanks set?
The 16 variants accommodate the range of manifold configurations, DIN valve specifications (200 bar vs. 300 bar), first stage model combinations, and finish preferences common in technical diving. Different technical agencies and divers have specific preferences for which first stage model goes on which port, whether the isolator-side or H-manifold configuration is used, and finish aesthetics. The variant system allows the correct set to be ordered for a specific configuration without requiring custom assembly.
Can I add a drysuit hose to the Mercurio ICE/Venere set?
If the first stage in the set has a free LP port, a drysuit inflation hose can be added. The Mercurio ICE balanced first stage provides multiple LP ports. The specific port count for the set variant should be confirmed on the product detail page. If all LP ports are occupied by the included hose configuration, an LP port splitter is the solution — though in practice, technical first stages typically provide sufficient ports for a full hose setup including drysuit.