Thanks very much for posting here. I read your description of the gun's construction and see that you are using the Zelinka (Zelinsky System) to provide the releasing valve operation via the inner barrel moving forwards from a stationary barrel plug, whereas in the Aquatech guns the plug moves and the inner barrel is fixed. The reason for the Aquatech being designed that way is that it is a variation on the Alcedo "Hydra", but with the pilot valve for the hydraulic locking chamber situated remotely via a small bore transfer tube of various lengths depending on where the trigger (and grip handle) is located. One advantage of the Aquatech "Black Sea" gun is the same biasing spring is used for the barrel plug of the releasing valve and the non-return valve on the hydropump, part number 27 on the schematic diagram.thanks for my website link. if it is interesting I showe some test video. but not in Ukrania. On Cyprus.
it is absolutly not like aquateh. It havw movement burrel and after shot burrel automaticly closed main valve. Like as the ship's gun almost
I am hoping that you will create a new thread here describing your very impressive hydropumping gun and also welcome you to "Deeper Blue" where the "Pneumatic Gun World" is alive and well.