TUSA's RS-790 Regulator. The all chrome plated marine brass first stage regulator is a balanced diaphragm design which is environmentally sealed.
The diaphragm membrane transmits the pressure changes to the internal mechanism eliminating the need for the surrounding water to enter the intricate mechanism.
The benefit of this type of first stage design is that none of the internal parts are exposed to contaminants such as salt, sand, chlorine or pool acids.
These environmental contaminants cause corrosion and mineral deposits to form on the internal mechanism deteriorating regulator performance.
TUSA has taken this concept one step further with the addition of a Dry Ambient Pressure Chamber.
A standard diaphragm first stage regulator allows some water to enter the main spring cavity.
Although the cavity is not associated with the intricate internal components, it does allow the cold water to rest against the primary diaphragm cooling the air that passes through the first stage.
This colder air can promote second stage freeze up when diving in cold water.
The Dry Air Ambient Chamber prevents water contact with the diaphragm and spring maximizing performance, at any depth, in cold water conditions below 10Â°C (50Â°F).
In addition the outside of this chamber is ribbed increasing the parts surface area thus acting like a radiator to increase heat transfer further reducing the problems associated with cold water diving.
The first stage has two high flow low pressure ports (LP) and two standard LP ports along with two high pressure ports (HP). The high flow LP ports are positioned near the diaphragm and offer up to a 15% increase in air flow.
The S-90 second stage is also a pneumatically balanced system.
A small chamber positioned at the end of the poppet assembly traps air and forces the poppet back against the intermediate pressure orifice.
This provides decreased inhalation resistance and increases smooth breathing in all conditions.
The lightweight compact composite designed second stage is also equipped with a Venturi Adjustment Lever.
This lever has two positions that are selectable by the diver. Use Surface" or minimum setting when entering the water or on the surface, reducing the sensitivity and possible free flow of the second stage. Use the Dive" or maximum setting for maximum air flow during the dive.
The second stage comes standard with an orthodontic-conscious designed silicone mouthpiece.
TUSA is one of the world's first scuba equipment manufacturers, founded by Kazuo Tabata in Tokyo, Japan in 1952. From the first handmade mask and goggles built in Mr. Tabata's garage, Tabata products have always been constructed from the finest materials with an unparalleled commitment to quality and innovation.
AT PRESENT WE ARE ONLY SHIPPING TO THE UK, HIGHLANDS AND ISLANDS, CHANNEL ISLANDS, N.IRELAND AND EIRE
Free UK Mainland Delivery on orders of £50.00 and above
Take advantage of our free UK Mainland delivery offer when you spend £ 50.00 or more*
1st Class and DPD 2 Day Services will be free for UK Mainland postcodes ( DPD Excludes Highlands / Islands, Northern Ireland (Parcelforce) and Channel Islands
DPD 24 services are excluded from this offer
( *Weights & Cylinders excluded from offer)
We reserve the right to withdraw the offer at any time
UK Mainland Ist Class Royal Mail
Approx delivery time between 1 - 3 Days
Next Working Day Before 1pm
Express Delivery Times
Special Delivery & Parcelforce 24 are Next Working Day ( Mon-Friday )
Saturday Guaranteed Delivery is available on request
Call 01642 486666 for a quote
Note : Customs Charges / Local VAT may be payable on orders shipped outside the UK
Approx 2-10 Days Depending on destination
Parcelforce Euro Priority - Up to 25kg
If in doubt, just contact us and we can let you know a timescale
Depending on country, this service can take anywhere between 3 and 6 days on average
Returns Policy / Faulty Products
Denney Diving is committed to providing the highest quality products and service. However, on rare occasions products may be found to be faulty or defective. If any product is found to be faulty or have defects upon delivery, You will be entitled to a free of charge replacement or full refund (including postage fees incurred) within 30 days of receiving product. If a product is returned to us, and following the testing process, the product is found to be in good working order without defect or fault, we will return the product to you. All returns must first be authorized by either telephone or e-mail, after which you will be given a returns number which must be quoted with all returned goods. Any goods returned for either exchange or refund can only be dealt with after a authorization number has been issued.
Returning unsuitable or incorrectly sized goods
If a product you purchase from us turns out to be unsuitable or the incorrect size for you, we will provide a free of charge replacement or full refund, provided they are returned in a new & unused resalable condition within 30 working days of the date of receiving your order. When returning goods to us, the customer will incur any postage fees. If we arrange to collect the goods for you, the cost of our postage to do so will be deducted from the refund. Please note that we do not refund postage for unsuitable or incorrectly sized goods.
You may cancel your order within 30 working days to receive a full refund. To cancel all, or part of your order, You must first contact us by either telephone or e-mail, after which you will be given a returns number which must be quoted with all returned goods. A full refund will be provided within 7 working days of cancellation.
When returning goods to us, the customer will incur any postage fees. If we arrange to collect the goods for you, the cost of our postage to do so will be deducted from the refund.
General returns / faulty product information
We always aim to please, so if you are not entirely satisfied with your purchase- just give us a call 01642 486666 (calls charged at local rate), and we will do our utmost to help. Your statutory rights remain unaffected. For all Returns / Customer Support contact us on 01642 486666 (calls charged at local rate)
We try to dispatch most orders the same day if received before 4pm (Monday-Friday)
On the odd occasion we may run out of stock of certain products, but normally have more stock arriving every few days.
If a product ordered is out of stock, we will contact you asap to let you know of any shortage.
On certain occasions we may not be re-stocking / discontinuing an out of stock item ordered, and on this occasion we will contact you to let you know and either offer an alternative or cancel for a full refund.
If we have mistakenly under priced an Item, we will not be liable to supply that item to you at the stated price, provided that we notify you before we dispatch the item for you. In these circumstances, we will notify you with the correct price so you can decide wether you wish to cancel or continue with the item at the correct price
Please contact us for more information regarding Payment & Security