Halcyon H-50D First Stage Regulator

The Halcyon H-50D First Stage is a high-performance diaphragm design is fully sealed and purpose-built for harsh conditions like ice or environmentally contaminated environments. Diaphragm first stages are historically popular with cold water divers, and the Halcyon H-50D was engineered for extreme conditions.

Dive into extraordinary places with your H-50D, and be confident you have a rugged regulator to meet all your demands.

Halcyon H-50D is environmentally sealed

The balanced, environmentally sealed diaphragm first stage performs better in cold water than any other diaphragm regulator while supplying consistent performance at varying tank pressures and depths. You will enjoy smooth, easy breathing throughout your dive.

The dry, balanced chamber diaphragm design prevents water from entering the first-stage mechanism and ensures trouble-free operation, even in the coldest conditions.

First stage ports

Two opposing high-pressure ports allow you to choose where to route your SPG and allow the use of accessories. Most Halcyon divers route their pressure gauge to the left, but the Halcyon H-50D allows flexibility with any configuration you choose; these options provide freedom to support personalised and advanced hose routing configurations.

Four low-pressure ports allow you to customise your hose routing for comfort and convenience. The H-50D features four stationary low-pressure ports with high flow options, ensuring the best air delivery with up to 15% more air than other LP ports.

Try the Halcyon H-75P first stage with its 360-degree swivel turret for maximum freedom.

Halcyon H-50D First Stage features

• Balanced, sealed diaphragm
• Dry balance chamber
• 2 x High-pressure Ports
• 4 x Low-pressure Ports (3/8)
• 300-bar DIN, compatible with 40% Nitrox

⏎ Download the Halcyon Regulators Manual

SHIPPING:

We aim to dispatch all in-stock items within 2 working days but will inform you of approximate delivery times should any item on your order be out of stock or on supplier backorder due to current manufacturing or transport delays caused by global shortages and/or impeded production.

Please refer to our Shipping Policy and Returns & Refunds Policy for detailed information on delivery terms and returns.

Our current shipping rates are as follows:

• UK mainland orders £50 and over: FREE - DPD or alternative courier delivery*
• UK mainland orders under £50: £5.50 Fixed Rate - DPD or alternative courier delivery*
• Scotland Highland (inc. AB31+ Post Codes), Scottish Islands & Isle of Man: £11.00 Fixed Rate 
• Channel Islands & Northern Ireland: £16.00 Fixed Rate
• European Union: £15.70 + 6% of order value (maximum £35)
• Rest of the World: £22.00 + 9% of order value (maximum £65)
  
• BFPO Post Codes: £23.00 (see Delivery Terms for BFPO at end of this page)
  
• FPO & APO Unfortunately, we are unable to arrange delivery to FPO/APO addresses
• PO Boxes - All our PO Box deliveries need to be signed for, therefore, unless prior arrangements are made with us, we do not deliver to PO Boxes.

*The dispatch days listed in our product listings refer to working days, excluding weekends and UK holidays. Products that need to be ordered from the manufacturer or distributor's stock, are temporarily out of stock, are subject to backorders, or are marked as Special Orders may take longer to dispatch. We will notify you of this once your order is confirmed.

INTERNATIONAL EXCEPTIONS:

For international orders containing weights, cylinders (excluding suit inflation bottles), and Suex scooters, please contact us in advance before placing your order.

These products are not included in our global max-capped shipping rates. They are only shipped outside the UK mainland after the freight cost is calculated based on the parcel's total weight, dimensions, delivery location, and the courier service used. We will let you know the cost before processing any order.

All cylinders we ship within and outside of UK mainland are filled and tested on site before being emptied for dispatch. Cylinders shipped outside of the UK will be empty and will also have their valves removed, requiring reassembly after you receive delivery. Twinset manifolds and bands will also be removed and dispatched together with the cylinders for safe global shipping.

RETURNS & REFUNDS

We offer a 30 day return for any product sold under our Returns & Refunds Policy Please contact us before any return with your order number and date details. Receive our Returns Authorisation Form and instructions and enclose them with your return to expedite a refund. Detailed information is available in our Returns & Refunds Policy.

Email us at sales@dirdirect.com or call us on +44(0)1305 824 555

Note that all returned items are shipped at the customer's own risk and remain the customer's property until received by Underwater Explorers, so please ensure they are packaged well and use reliable postal services with tracking facilities. The goods will be inspected on arrival. 

Return postages are at your own cost and our outbound shipping costs (if items are sold with integrated basic shipping charges i.e. Free shipping for orders £45 and above) the UK shipping rate may be deducted from any UK mainland refund unless linked to a fault/defect claim. 

Please contact us with your order number and name before sending any returns to:

Underwater Explorers – Returns
Unit 1, Maritime Business Centre
Mereside, Portland
Dorset, DT5 1FD 
United Kingdom

Please refer to our Shipping Policy and Returns & Refunds Policy for detailed information.