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The SAE Straight 4 Bolt Flange PFF-G Thread Flange is a high-performance connecting component specially developed for hydraulic systems. It features excellent versatility and dependable working performance. This flange is professionally designed to work well with both braided hoses and spiral hoses. It can realize stable connection for different kinds of hydraulic hoses under various pipeline layouts, which makes it a highly practical and widely used fitting in hydraulic piping construction.

To cope with diversified and harsh working environments, this flange is available in a variety of material options. Customers can pick the most appropriate material according to on-site operating conditions, such as special medium, temperature and corrosive surroundings. Reasonable material selection ensures the flange maintains optimal working performance and extends its service life greatly, even when operating under tough and challenging circumstances.
This threaded flange enjoys a broad range of industrial applications. It is commonly deployed in agricultural equipment, construction machinery, coal mining facilities, general machinery, garden tools, automobile manufacturing, petroleum industry and many other sectors. Benefiting from its solid structure and reliable connection performance, the flange ensures safe and efficient hose connection, so it is widely trusted for heavy-duty and continuous operation in these demanding industries.
All our hydraulic fittings are manufactured in accordance with strict production standards, with quality reaching the level of internationally renowned brands. Every finished product delivers stable performance and long service life. We have manufactured a large volume of pipe fittings of this type, which have been exported to numerous countries and regions around the world. Superior quality has won us solid reputation and sincere recognition from global customers.
The flange is compatible with two mainstream hydraulic hoses including braided type and spiral type, showing great flexibility in assembly. Multiple material choices enable it to adapt to various complex working conditions. It serves a wide spectrum of industries with strong practicability. Supported by exquisite craftsmanship and premium quality, it provides excellent tightness and safety for pipeline connection. Overall, it is an ideal solution for all kinds of hydraulic connection projects.
| 3000 PSI Series | ||||||||||||||
| Nom. flange size | T1 | D1 | L1 | L2 | L3 | LA | LB | LX | LY | DB | Weight | PN (bar)¹) | ||
| (steel) | ||||||||||||||
| SAE | ISO | kg/piece | S | SS | ||||||||||
| (in.) | (DN) | |||||||||||||
| 1/2 | 13 | G 3/8 | 13 | 36 | 16 | 19 | 46 | 57 | 17.5 | 38.1 | 9 | 0.27 | 345 | 345 |
| 1/2 | 13 | G 1/2 | 13 | 36 | 16 | 19 | 46 | 57 | 17.5 | 38.1 | 9 | 0.27 | 345 | 345 |
| 3/4 | 19 | G 3/4 | 19 | 36 | 18 | 19 | 50 | 65 | 22.3 | 47.6 | 11 | 0.37 | 345 | 345 |
| 3/4 | 13 | G 1/2 | 13 | 36 | 18 | 19 | 50 | 65 | 22.3 | 47.6 | 11 | 0.4 | 345 | 345 |
| 1 | 25 | G 1 | 25 | 36 | 18 | 22 | 55 | 70 | 26.2 | 52.4 | 11 | 0.45 | 345 | 345 |
| 1 | 19 | G 3/8 | 19 | 35 | 21 | 19 | 55 | 70 | 26.2 | 52.4 | 11 | 0.45 | 345 | 345 |
| 1 1/4 | 32 | G 1 1/4 | 32 | 40 | 21 | 22 | 68 | 79 | 30.2 | 58.7 | 11.5 | 0.66 | 276 | 276 |
| 1 1/4 | 25 | G 1 | 25 | 42 | 25 | 22 | 65 | 80 | 30.2 | 58.7 | 11.5 | 0.8 | 276 | 276 |
| 1 1/2 | 38 | G 1 1/2 | 38 | 45 | 25 | 24 | 78 | 93 | 35.7 | 69.9 | 13.5 | 1.05 | 207 | 207 |
| 1 1/2 | 32 | G 1 1/4 | 32 | 45 | 27 | 24 | 78 | 95 | 35.7 | 69.9 | 13.5 | 1.17 | 207 | 207 |
| 2 | 51 | G 2 | 51 | 45 | 25 | 30 | 89 | 103 | 42.9 | 77.8 | 13.5 | 1.17 | 207 | 207 |
| 2 | 38 | G 2 1/2 | 38 | 45 | 25 | 26 | 89 | 103 | 42.9 | 77.8 | 13.5 | 1.52 | 207 | 207 |
| 2 1/2 | 63 | G 2 1/2 | 63 | 50 | 25 | 30 | 101 | 115 | 50.8 | 88.9 | 13.5 | 1.59 | 172 | 172 |
| 2 1/2 | 51 | G 2 | 51 | 50 | 25 | 30 | 101 | 115 | 50.8 | 88.9 | 13.5 | 2.13 | 172 | 172 |
| 3 | 73 | G 3 | 73 | 50 | 27 | 34 | 124 | 135 | 61.9 | 106.4 | 17.5 | 2.28 | 138 | 138 |
| 3 | 63 | G 2 1/2 | 63 | 50 | 27 | 30 | 124 | 135 | 61.9 | 106.4 | 17.5 | 2.56 | 138 | 138 |
| 3 1/2 | 89 | G 3 1/2 | 89 | 48 | 27 | 34 | 136 | 152 | 69.9 | 120.7 | 17.5 | 2.42 | 34 | 34 |
| 3 1/2 | 73 | G 3 | 73 | 48 | 27 | 34 | 136 | 152 | 69.9 | 120.7 | 17.5 | 3.28 | 34 | 34 |
| 4 | 99 | G 4 | 99 | 48 | 27 | 34 | 146 | 162 | 77.8 | 130.2 | 17.5 | 2.78 | 34 | 34 |
| 4 | 89 | G 3 1/2 | 89 | 48 | 27 | 34 | 146 | 162 | 77.8 | 130.2 | 17.5 | 3.3 | 34 | 34 |
| 5 | 129 | G5 | 129 | 50 | 28 | 30 | 180 | 184 | 92.1 | 152.4 | 17.5 | 5.8 | 34 | 34 |
| 6000 PSI Series | ||||||||||||||
| 1/2 | 13 | G 3/8 | 13 | 36 | 16 | 19 | 46 | 57 | 18.2 | 40.5 | 9 | 0.26 | 420 | 420 |
| 1/2 | 13 | G 1/2 | 13 | 36 | 16 | 19 | 46 | 57 | 18.2 | 40.5 | 9 | 0.29 | 420 | 420 |
| 3/4 | 19 | G 3/4 | 19 | 35 | 21 | 22 | 55 | 71 | 23.8 | 50.8 | 11 | 0.5 | 420 | 420 |
| 3/4 | 13 | G 1/2 | 13 | 35 | 21 | 22 | 55 | 71 | 23.8 | 50.8 | 11 | 0.5 | 420 | 420 |
| 1 | 25 | G 1 | 25 | 42 | 25 | 24 | 65 | 81 | 27.8 | 57.2 | 13 | 0.76 | 420 | 420 |
| 1 | 19 | G 3/4 | 19 | 42 | 25 | 24 | 65 | 81 | 27.8 | 57.2 | 13 | 0.76 | 420 | 420 |
| 1 1/4 | 32 | G 1 1/4 | 32 | 45 | 27 | 25 | 78 | 95 | 31.8 | 66.6 | 15 | 1.2 | 420 | 420 |
| 1 1/4 | 25 | G 1 | 25 | 45 | 27 | 25 | 78 | 95 | 31.8 | 66.6 | 15 | 1.2 | 420 | 420 |
| 1 1/2 | 38 | G 1 1/2 | 38 | 50 | 30 | 28 | 94 | 112 | 36.5 | 79.3 | 17 | 1.65 | 420 | 420 |
| 1 1/2 | 32 | G 1 1/4 | 32 | 50 | 30 | 28 | 94 | 112 | 36.5 | 79.3 | 17 | 1.65 | 420 | 420 |
| 2 | 51 | G 2 | 51 | 65 | 37 | 30 | 114 | 134 | 44.5 | 96.8 | 21 | 2.45 | 420 | 420 |
| 2 | 38 | G 1 1/2 | 38 | 65 | 37 | 30 | 114 | 134 | 44.5 | 96.8 | 21 | 2.45 | 420 | 420 |
| 2 1/2 | 63 | G 2 1/2 | 63 | 80 | 45 | 32 | 152 | 180 | 58.7 | 123.8 | 25 | 3.05 | 420 | 420 |
| 3 | 73 | G 3 | 73 | 90 | 55 | 40 | 178 | 208 | 71.4 | 152.4 | 32 | 3.45 | 420 | 420 |