HELP and FAQ

Almost as important as buying the best dive products is the support you get from the manufacturer: after sales service, upgrades and updates, and simple things such as answering questions promptly and discussing improvements.

Dive gear manufacturers don’t always shine at customer service. But Poseidon works hard to make sure you’re happy with what you’ve bought, and that any questions or issues are addressed without delay.

In this section you will find manuals and downloads, the answers to common questions, clever ways to identify spare parts and much, much more. Don’t forget to send us a note if we’ve missed something.

For the fastest answers, click here to chat. If we’re not online, leave us a message and we’ll get right back to you.

FAQ

Does my extreme deep model 4550 have an over pressure valve in the first stage?

The only Xstream regulators that has a built in over pressure valve, are those that has an article number that starts with 0100 (complete regulator) or 0110 (1st stage). The Xstream Deep, with article number 4550, that you have is an older model and it does not have a built in over pressure valve.

In the last shipment received, I noticed a loud whistling noise coming from the 1st stage when inspiring. I could not pin point accurately where it was being produced. I tried several regulators and they all produced this sound. Some would stop whistling after a few breaths but some kept doing it all the time. I then thought that maybe it was from the hose and replaced the original hose with one spare from my stock. To my surprise the noise stopped. I then replaced again with the original hose and there was no more whistling. I repeated the procedure with the rest of the regulators and sometimes it resulted and sometimes not. Can someone tell me what is going on? Why does this occur and how can we stop it?

A whistling noise can sometimes be heard when the Xstream first stage is pressurized or depressurized. This is due to a resonance frequency which takes place between the ball bearing and the actuating pin. This noise should however not be detectable during low flow rates such as while breathing. The noise has absolutely no effect on the regulator functionality and can therefore be disregarded. We are testing new lubricant brands in order to try and avoid the noise during the pressurization and depressurization of the regulator.

For more Frequently Answered Questions, click here.