Discount Hydraulic Hose
Silver Member, Advertiser
Thanks for the post. I have 1 set of ISO B couplers and they never seem to work on my farm equipment or tractors. Now I know why. Should just get rid of them. Most if not all newer farm equipment use ISO A (Pioneer standard).
Before you replace your couplers, please note. The Agricultural Couplers used on your farm equipment are probably ISO 5675. They are interchangeable with ISO 7241 Series B ONLY in the 1/2" size. All other sizes are not interchangeable.
Also, both of these couplers can be purchased in either a poppet or ball design. Some people claim to interchange these, but manufacturers recommend you do not mix the two.
For maximum compatibility, I recommend the 1/2" ISO 5675 couplers. You can buy them for less than $15 per set on DiscountHydraulicHose.com and they feature the ball design that is most common on tractors and other agricultural equipment. You can also get good deals on eBay or buy them from your local farm supply center. The ISO A couplers will cost a few dollars more, and they usually have the poppet design, instead of the ball design.