Comparing 2 speed pumps: Hydrapak & the HMP, PSP, MP, MHX
Why was the Tangye Hydrapak such a great concept hydraulic hand pump and why have today’s Hydrapak, HMP, MHX and PSP hand pumps all evolved that original design so well? An old Hydrapak product brochure. The Tangye Hydrapak was the original pump back in the 1960’s. It was a trailblazer. That classic unit [...]