Hi Andy,
I hope it is you, been looking at these pumps, they look like a direct replacement for the piston pump, glad you have confirmed this as I was wondering if they would hold up the pressure of around 4 psi in the cylinder. I have been running this pump in the Seehund for around 20 years so it has done well, also had one in the Ocelot.
Thanks for the advice
Kind regards 17-09 (Alan Poole)