Description
| Part Number | Thread inch | Hose I.D. inch | A | E | W inch | B | ||||
| mm | inch | mm | inch | mm | inch | |||||
| 3988-12-12 | 3/4 | 1-1/16×12 | 3/4 | 2.98 | 76 | 1.82 | 46 | 1-1/4 | 1.85 | 47 |
| 3988-16-16 | 1 | 1-5/16×12 | 1 | 3.48 | 88 | 2.14 | 54 | 1-1/2 | 2.10 | 53 |
| 3988-20-20 | 1-1/4 | 1-5/8×12 | 1-1/4 | 3.81 | 97 | 2.59 | 66 | 2 | 2.22 | 56 |
| 3988-24-24 | 1-1/2 | 1-7/8×12 | 1-1/2 | 4.21 | 107 | 2.81 | 71 | 2-1/4 | 2.47 | 63 |
3988 One Piece Hose Fitting Video
This video provides a detailed look at the Topa 3988 one piece hose fitting.
It highlights the product’s construction, including the high-quality carbon steel and stainless steel materials used, and the precise machining process that guarantees accurate dimensions. You will also see the surface finish and design features that ensure strong, leak-free connections in demanding hydraulic applications.
Topa’s one union hydraulic fittings are built for durability and consistent performance under high pressure and vibration. Watch the full video to understand our technical expertise—and contact Topa today to request your inquiry or order.
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