Sub-Tech Systems Ltd

Umbilicals

Sub-Tech Systems has many years experience in the supply of Divers Umbilicals for both Surface Demand and Bell Excursion. Hose types are available to suit specific applications considering pressure rating, flexibility and abrasion resistance. Hoses are twisted cables to provide all power, communications and video requirements. Lifelines can also be incorporated where required. Various end fittings and electrical terminations are available to suit specific requirements.

Please contact the office with your requirements for excursion, main bell Umbilicals etc on 01229 820400 or alternatively by email sales@subtechsystems.com

Diver Umbilicals
(First Drawing attached)
The Fibrolite and Fibroline range of sheared lower pressure hoses are designed for use in surface dive and bell excursion applications where kink and abrasion resistance are high priorities and is particularly suited to jacket maintenance and salvage type operations. Other applications include use in breathing apparatus for use in gas tank inspections and other hazardous environments. The main difference between Fibrolite and Fibroline hoses is the maximum working pressure. Where the working pressure is within the limits of the Fibrolite range there is a price advantage. Due to the outer core thickness the Fibroline is seen as more robust than Fibrolite with its thinner outer cover.

Fibroline and Fibroflex range of hoses are both suitable for air diving. They are both also suitable for Nitrox Diving depending upon the pressure and the mix of nitrogen and oxygen. A typical mixture of 32% oxygen/ 68% nitrogen working at 15 BAR is fine. The Fibroflex Umbilical is easier to coil/store and if the Umbilicals are long this may be a deciding factor on which is more suitable. Fibroflex is a highly flexible braided high pressure hose for use in a Main Bell, Wet Bell and Excursion Umbilicals. Fibroflex is designed specifically to withstand rigours of everyday use in a Hyperbaric Dive System. This range of hoses is approved by DNV. Services include gas and hot water supply, gas reclaim and PNEUMO and monitoring hoses. Fibroflex Hoses for Gas and PNEUMO use have resilient polyurethane liners, reinforced with high strength fibre braided layers offering pressure capability and abrasion protection whilst maximising flexibility. Fibroflex Hot Water hoses are constructed the same as gas hose but have thermoplastic rubber liners rated for maximum 99°C use.

Main Bell Umbilicals
(Second Drawing attached)
This product range includes Umbilicals for Life Support Applications such as Main Bell, Wet Bell and Habitat diving. Hoses and cables are incorporated providing services such as gas and hot water supply, gas reclaim, depth monitoring, power supply, communications and video transmission. Al Umbilicals are of a rope like twisted construction and are supplied with either polyethylene monofilament overbraid or extruded jacket. Approval is available if required e.g. Lloyds Register of Shipping, Det Norske Veritas (DNV), American Bureau of Shipping.