The Buzz on Bouncy Castles Table of ContentsUnknown Facts About Bouncy Castle HireThe Ultimate Guide To Jumping CastleThe Best Guide To Inflatable Jumping CastleIndicators on Jumping Castle You Need To KnowJumping Castle Fundamentals ExplainedBy 60 full strokes we went to 6PSI and also pumping was beginning to get hard. At 70 strokes we went to 8