Breco B-4050-6P, 1" Pioneer AG Interchange Ball-Valve Poppet Hydraulic Coupler x 1-11.5" Female NPT, 4000 Series, Agricultural, Steel

Product Details

Agricultural and heavy-duty hydraulic connections, commonly known as Pioneer-style or AG couplers. The Breco B-4050-6P is a steel 1" poppet-style coupler that interchanges with the Pioneer 4000 ball-valve design — the standard on tractors, farm implements, skid steers, and construction equipment. Rated to 3000 PSI with 50 GPM flow. (Also known as the 4000 Series.)

Why this coupler

• Pioneer AG interchange — couples with the widely used Pioneer 4000 agricultural standard found on tractors and farm equipment.
• Poppet ball check valve — positive shut-off in heavy-duty hydraulic service within rated pressures.
• Ball-locking sleeve — holds the mating halves securely together under load and vibration.
• Induction-hardened bar stock — critical parts resist wear in abrasive ag, construction, and oil-field service.

Frequently asked questions

Are these Pioneer / agricultural couplers?
Yes — these are the Pioneer-style AG couplers (Foster/Breco call them the 4000 Series) used on tractors, farm implements, and construction equipment. They interchange with the Pioneer 4000 ball-valve design.

What plug does it take?
Any 1 plug on the same ISO-B interface in matching steel. The matching Breco plug is B-4010-6.

How does it stay connected?
A ball-locking sleeve holds the socket and plug together, with induction-hardened critical parts for durability.

Why buy from hpcouplers: Breco quality, responsive US-based support, accurate specs, fast shipping.

4000 Series (Pioneer AG Interchange) — Complete Series Chart

The size you are viewing is shown first, with the rest of the series below. Base couplings appear before ball lock and seal options. Dust caps and plugs fit by body size and are labeled by which half they protect. Click any part number to open that product.