Hydraulic Quick Couplers

Intro

Different websites provide different specifications for quick couplers, so here we try to reconcile.

Specifications

• 3/4" NPT ISO 7241-B ouplers - 40 GPM (bought from Industrial Supply Inc are quite large). 40 GPM here [1] is defined as 2 bar pressure drop. 48 GPM for 4-fold power cube is 3-4 bar drop.
• ISO 5675 -

28 GPM

• $16 for 40 GPM hydraulic quick couplers - [2]
• Safeway S56-6 - 28 GPM - http://www.safewayhyd.com/s56.htm
• Safeway S21F-6http://hydraulics.safewayhyd.com/item/agricultural-quick-couplings-s20-series/s20-male-tip-half-nipple/s21f-6-1
• http://www.automation-dfw.com/pdf_pneu/tema02-hydisostdprofile.pdf
• 3/4" ISO 7241-1 A Hydraulic Hose Quick Disconnect Couplers 600-12-12S - 6600 Series - http://www.automation-dfw.com/pdf_pneu/tema02-hydisostdprofile.pdf - $25 on Ebay - [3]
• 3/4" ISO 7241-1 B - specs - [4]

Unknown GPM

• Dixon HT6F6 -

3D Manipulable Image and STEP File

• From GrabCAD - [5]