Because the scuba regulator is such a vital piece of gear many scuba divers choose to buy their own scuba regulator instead of renting one from the dive shop. When a scuba diver has used a few different scuba regulators, on numerous dives, he will notice that they all have slightly different "action" - some feel looser or tighter, some will deliver air more forcefully, others will have a slight "suck" to them. The goal of all regulators is the same: to deliver air on demand at ambient pressure. Comfort with a scuba regulator depends on how the diver breathes; which is different for everyone. Though a helpful clerk at the dive gear shop can recommend "the best" regulators, from the most respected manufacturers, in truth no one can tell you which regulator "feels right", except you.
As a novice scuba diver renting or borrowing equipment from a dive shop always take note of what scuba regulator you are using and whether you like how it feels. When you find the one which makes your breathing feel effortless remember its make and model. When you decide to buy your own scuba regulator you will know which one to get.
When shopping for a scuba regulator here are some things to consider:
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