If you dive deep, dive cold, or often find yourself on silty bottoms or in less-than-pristine waters, theMK17/G260 is the reg system for you.

The MK17 is a high performance, balanced diaphragm first stage engineered specifically for cold water and harsh environments. Completely sealed off from the elements, neither water nor pollution can get inside the chrome-plated marine grade brass body to foul the inner mechanism. This total sealing system also allows for a dry ambient pressure chamber which works to prevent freezing, so you can be assured of trouble-free operation even in the coldest conditions.

The MK17 delivers fast and reliable airflow with every breath, plus it’s user-friendly, offering two high pressure and four low pressure ports, two of which are high-flow (high-flow ports deliver about 15 percent more air than conventional low pressure ports). It also comes with an external intermediate pressure adjustment that allows technicians to maintain peak performance between service intervals without having to break down the first stage.

The venerable G260 is the most imitated air balanced second stage design of all time. First introduced in 1986 as the G250, it was the first regulator to introduce an adjustable Venturi Initialed Vacuum Assist (VIVA). Today’s modern version features metal components (inlet tube, orifice, inhalation control knob and hose connector) for excellent cold-water performance. It also offers a left-right hose attachment option, making it a great choice for tech diving configurations.

While you don’t need cold water or a harsh ocean environment to appreciate this reg, the MK17/G260was built for demanding divers and demanding conditions. Ideally suited to technical diving as well as cave diving, with every breath you take you can be guaranteed top-of-the-line performance.

This compact reg is an exceptional all-around breathing system targeted to beginning divers as well as travel divers.

An excellent choice for diving temperate or warm waters, the time-proven MK11/R195 pairs an environmentally sealed balanced diaphragm first stage with a very user-friendly second stage. The result: a durable breathing system that’s easy to use and delivers air efficiently, all at a price that won’t bust your budget.

The MK11’s balanced diaphragm design is compact and lightweight, making it the perfect travel companion. The diaphragm system keeps water and pollution out of the main mechanism, increasing reliability and performance. Its polished chrome forged brass body features identical high pressure and low pressure ports on each side so you can hook it up to your tank in either the up or down position while maintaining the same port layout. Also, two of the low pressure ports are high-flow, delivering about 15 percent more air than the standard low pressure ports. This means lots of effortless airflow with every breath.

The R195 is a modern second stage design based on the time-honored R190. The R195 combines a classic downstream valve with a large diaphragm, functional purge button and VIVA switch for smooth and easy operation. It brings a welcome simplicity as well as proven performance.

For new divers and travel divers looking for an economical regulator that’s simple and dependable, the MK11/R195 can’t be beat.