Product Description
TL77 3/8" NPT ISO 7241-A Quick Disconnect Hydraulic Coupler Set
The TL77 is an industrial-strength, poppet-valve hydraulic coupler set designed for demanding agricultural and construction applications. Engineered to meet and exceed ISO 7241-A standards, these couplers provide a secure, high-pressure connection for tractors, seeders, trailers, brush cutters, sprayers, and a wide array of skid steer attachments.
🗸 Heavy-Duty Industrial Rating: Built for durability in rugged conditions, these couplers are rated for over 4,410 PSI, ensuring reliable performance under high-pressure demands.
🗸 Universal ISO 7241-A Compatibility: Fully interchangeable with standard ISO 7241-A series couplers, making them a direct fit for equipment from major brands including Bobcat, John Deere, CAT, Kubota, New Holland, CASE, and more.
🗸 Precision Locking Mechanism: Features a push-connect locking sleeve with heavy knurling for a non-slip, secure grip, allowing for efficient connection and disconnection even while wearing heavy gloves.
🗸 Fluid & System Protection: The poppet valve design ensures minimal air inclusion during disconnection, while the included high-quality dust caps protect the interface from debris and the elements.
🗸 Corrosion Resistance: Finished with robust trivalent zinc plating to effectively resist rust and environmental degradation in harsh field environments.
Specifications
| Detail | Specification |
| Model Number | TL77 |
| Coupler Body Size | 3/8" |
| Coupler Thread Size | 3/8" NPT |
| Coupler Material Type | Steel |
| Plating Type | Corrosion-resistant trivalent zinc |
| Package Includes | (1) Male Coupler, (1) Female Coupler, (2) Protective Dust Caps |
Q: Are these "Flat Face" or "Poppet" style couplers?
A: The TL77 is an ISO 7241-A Poppet Style coupler. These are distinct from flat-face (ISO 16028) designs and are the industry standard for traditional agricultural machinery and older equipment lines.
Q: What equipment uses the ISO 7241-A standard?
A: This series is widely used in agricultural settings, specifically for tractors, seeders, sprayers, and trailers, as well as many universal skid steer applications.
Q: Can I connect these under full system pressure?
A: Standard ISO 7241-A poppet couplers are not designed to be connected under full system pressure. Always ensure your hydraulic system is depressurized before attempting to connect or disconnect your couplers to prevent seal damage or safety hazards.
Q: How do I know if this is the right size for my machine?
A: You must match both the Body Size (3/8" in this case) and the Series (ISO 7241-A). If your existing coupler has a flat, flush face, it is likely an ISO 16028, and this ISO 7241-A set will not be compatible.



Interchangeable Part Numbers:
| Manufacturer | Male | Female |
|---|---|---|
| Aeroquip 5600 | 5602-6-6S | 5601-6-6S |
| Dixon K | K3F3 | 3KF3 |
| Faster | ANV 38 NPT M | ANV 38 NPT F |
| Parker 6600 Series | 1717528 | 1717163 |
| Snaptite 61 | 61N6-6F | 61C4-4F |
| Stucchi BIR | M BIR38 NPT | F BIR38 NPT |
| Tomco 5600 | PA5603-21 | CA5603-21 |
We aim to be your #1 source for high quality skid steer & ag hydraulic quick connect couplers and accessories.
This item has a 100% satisfaction guarantee!
Return Policy: If you are not fully satisfied with your purchase, you may return unused item for a full refund of the purchase price, excluding shipping charges, within 60 days of purchase date.
If you have any questions about this item, feel free to E-mail me and I'll do my best to answer them. Walter
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