Question about Sherwood SR1 Regulator

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I have a SR1 that had the breathing resistance knob on the 2nd stage fall off during a dive. Any clue where I can get a new one without sending the reg in for service?

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Not likely a dive store or the manufacturer will sell such a part due to liability concerns. That being said, the knob should NOT fall out.
You could contact the place you bought it seeking warranty repair.
Ditto with the manufacturer. If you call Sherwood and describe the problem there's a good chance they will replace the part (in house) at no charge other then postage. However, most manufacturers require annual inspection/overhaul of life support equipment to maintain warranty status.

Posted on Aug 19, 2010

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Posted on Jan 02, 2017

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Mares Abyss Octo, brand new, not breathing well


It's possible that the perceived free flow problem is causing a more general lack of faith with the reg?
A correctly set up reg will never be too far away from free flowing in that transition from air to water - just as you dive in. This is not uncommon and shouldn't necessarily be determined to be a fault. Some manufacturers have gotten around this issue by allowing the user to switch the 2nd stage to a less sensitive setting (small knob on side 'pre-drive' & 'dive'). This means the reg can still be set up correctly but effectively put into an incorrect (for diving) mode while you are bobbing around on the surface getting ready to go down.
The fact that the abyss doesn't have this mode doesn't mean it isn't working right. If your shop adjust the sensitivity too far, they are going to make it harder to breath with. I have a couple of Abyss and sometimes experience small free flow. Nothing to worry about. You can look it up but the reg has been down to some record breaking depths without issue.
You haven't said which is your main reg - but the poseidon system runs a much higher pressure between 1st and second stage. You absolutely should not use this octo with poseidon, unless it has been ok'd by a authorized poseidon dealership.
In summary I can't see that your two problems are linked.

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The scuba regulator is employed in an open-circuit scuba set. Said scuba equipment reduces high air pressure conveyed by the diving cylinder to the first stage and feeds breathable gas to the diver through the second stage's mouthpiece. Also called pressure regulator or demand regulator, the scuba equipment is one of the essentials to diving that determines breathing quality and inhalation effort during the dive. But given the different types of regulators and the pertinent design of its first and second stage components, how should a neophyte diver - or even a seasoned diver at that, choose a scuba regulator that incorporates user adjustment and delivers a venturi-assisted air flow in its features? Consider your diving purpose and frequency. Better yet, take note of the following criteria to guide you in your purchase: 1. The Scuba Regulator's Mouthpiece. Check the specifications if the regulator is outfitted with a patented orthodontic mouthpiece. This implies that it is ergonomically-designed to accommodate an overbite or underbite by the human mouth. An ergonomic mouthpiece helps reduce fatigue in the mouth and jaw area, particularly in the cruise of lower depths and extended dives. 2. User Adjustment Settings. There are optimally-designed scuba regulators that are outfitted with adjustment levers to therefore allow divers to finetune valve settings in order to provide the least possible inhalation effort throughout the dive. One notable scuba equipment is the Aeris AT 400 Pro Regulator that is equipped with an adjustable second stage. 3. Weight of the Scuba Regulator. Visualize yourself on a dive and using just any other type of scuba regulator. Is the regulator bulky to considerably increase drag and cause jaw fatigue or is it buoyant enough for you to carry around with your mouth? Lightweight scuba regulators use polycarbonate thermoplastics for its housing to make the scuba equipment compact, sturdy and corrosion-resistant that makes them fit for extended use. 4. Nitrox Compatibility. This entails an ocular inspection of the cylinder tank (Nitrogen and Oxygen proportions) and scuba regulator (Nitrox compatibility) specifications. As a matter of convention, most regulators are suited for nitrox mixture use out of the box; containing the standard, maximum proportion of 40% Oxygen (in terms of volume) but then again, there are gas mixes supporting leaner proportions of oxygen such as the trimix. Therefore, check if the scuba regulator supports the gas mixture configured for your diving cylinder prior to purchase. 5. No-Contaminant Feature. As much as possible, choose a diving regulator that has been manufactured using Dry Valve Technology (DVT). DVT operates through an automatic valve that prevents contamination of the first stage mechanism to thus prevent regulator flooding and the entry of moisture or dust particles. This likely improves scuba regulator performance and extends its useful life. 6. Air-Sharing Feature. This feature often associated with octopus regulators (used as a spare demand valve or alternate second stage) will prove to be most helpful during diving emergencies such as a free flow or during diver rescues. High performance octopus regulators such as the Aeris Gyro Octopus Regulator are designed lightweight and with air-sharing feature, while sporting an inline swivel for convenience mounting and flexibility

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1 Answer

Safe second?


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