Extreme pussy pumping advice

My wife is into pussy pumping for "my pleasure" but she likes it as much because of all the sensations that a pumped pussy gives. She has been doing it nearly every weekend for about 3 years now, We have had a good collection over the years starting with the small Doc Johnson pussy pump, the standard pussy pump and her old favourate the high intensity pussy pump, All were great and did a good job and as her pussy is well pumped now it only take a few minutes to fill even the biggest pump.

The Trouble is she's got to a point were the pump fills up to the point she can't pump any larger, after looking on the net a lot of pumping porn videos showed large cylinders being used, the largest we could find in the UK was a 3.5inch wide 10inch long penis pump, We bought that and she has been using it since, It has been giving us better and larger results but she still can't seem to get to the massive pumps that can be seen of the net. Thats is our target and the result she would love to achieve.

Has by chance anyone got any advice for a better result or anyone know where we might be able to get a larger pussy pump from? Cheers.