|
|
Free Shipping on qualifying orders |
Contact Us Shipping | Returns |
|
| Home |
Heavy-Duty Double Cylinder Bands and Bolts |
Pricelist [Currency] |
|
|
|
Free Shipping on qualifying orders |
Contact Us Shipping | Returns |
|
| Home |
Heavy-Duty Double Cylinder Bands and Bolts |
Pricelist [Currency] |
|
||||||||||||
|
Like all very high quality stainless steel products, cylinder bands from Dive Gear Express are passivated. Passivation treatments improve the surface condition of stainless steel by dissolving iron that has been imbedded in the surface during forming or machining. If allowed to remain, the iron can corrode and give the appearance of rust spots on the stainless steel. Passivation, which consists of immersing stainless steel components in a special acid solution, will dissolve the imbedded iron and restore the original corrosion-resistant surface by forming a thin, transparent oxide film.
|
Tek Tip
|
Evolution of Manifolds and BandsIn the early 1980's there were few double tank manifolds available. Divers had a choice of a dual outlet metal-to-metal seal manifold from one manufacturer or a single outlet double barrel o-ring seal manifold from another manufacturer. Manifolds during this period did not have crossbars with isolation valves. The center-to-center spacing on these manifolds was 8.25-inches for aluminum 80s and steel 72s, which was tight for the increasingly popular 8-inch diameter tanks. The tight spacing meant bolts could rub against the tanks and the bands were prone to gapping. In the late 1980s, more dual outlet manifolds became available with several choices for seal design and centers spacing. Specialty band manufacturers also entered the market and offered a variety of band sizes and types for use with different manifolds and tanks. Some manufacturers used tack welds that would allow the bands to flex in accordance with the size of the tank, rather than manufacture multiple sets of bands. The tack weld approach required care during assembly because the welds would separate if the assembler were to over-torque the bolts. By the 1990s, valve manufacturers began to standardize manifold centers spacing and isolation valve crossbars became the norm. The double barrel seal manifold became the preferred design, providing better shock absorption and redundancy over the metal-to-metal seal manifolds. Band sizes standardized at 7.25-inches and 8-inches and tack welded bands became obsolete, the tack welds replaced by rigid structural plates. Today, the new generation adjustable 8.5-inch center-to-center spacing manifolds provide up to 0.25-inches of adjustability so that tank bands fit properly even when there are minor variations in tank dimensions. If you have a recently manufactured manifold with double o-ring seals and adjustable spacing, you should not need a specialized tank band. Adapted from "The News Reel, Vol 1, Issue IV" © Copyright by Lamartek, Inc. |
Related Products |
||||
|
|
|
|
|
| Image | Item SKU | Description | Ship Status | US $ Price [] |
|
All Dive Gear Express financial transactions are in United States Dollars (US $). Prices in currencies other than US $ are approximations and should be used as a guide only. |
|
|
Having trouble finding something? Try using our Google custom search engine: |
Still having trouble?Talk to our people, like Joyce: Contact Us via e-mail or telephone We'll see what we can do to help you. |
Your complete satisfaction is our goal. Dive Gear Express is an authorized dealer for all of the new, first quality, genuine brand name scuba diving equipment we sell. |
About Us | Contact Us | Ordering | Returns | ShippingBCs | Computers | Drysuits/DPVs | Fins/Masks | Gas/Tanks | Hardware | Lights | Manuals | Rebreathers | Regulators/SPGs | Tools |
|
