Description
Overview and Applications of Threaded Counter Flanges
Oleo Tecnica NPT Threaded Counter Flanges represent a high-quality construction solution for the hydraulic sector and for fluid contamination control. Designed to withstand demanding duty cycles, these counter flanges ensure optimal mechanical and hydraulic sealing, which is essential for the safety and efficiency of the system. NPT (National Pipe Thread) threading provides a precise and reliable tapered connection, helping to prevent fluid leakage even under demanding operating conditions.
Series 3000 and 6000 Specifications
The product range is divided into two main categories to meet different pressure requirements: Series 3000 and Series 6000. Series 3000 covers a very wide dimensional range, from 1/2″ up to 5″. The maximum recommended working pressure for this series varies according to component size: it starts at a maximum of 345 kg/cm² for smaller sizes (up to 1″), then progressively decreases to 276 kg/cm² for the 1″1/4 size, 207 kg/cm² for models up to 2″, 172 kg/cm² for 2″1/2, 138 kg/cm² for 3″, and down to 34 kg/cm² for the larger versions from 3″1/2 to 5″.
Series 6000 is engineered for very high-pressure applications. Available in sizes ranging from 1/2″ to 3″, this series maintains a constant maximum recommended working pressure of 414 kg/cm² across all listed models.
Construction Features and Materials
The durability and structural strength of Oleo Tecnica NPT Threaded Counter Flanges are determined by the use of high-quality materials. Designers and purchasing managers can select between two material options: S355 steel for standard high-strength applications, or AISI 316L stainless steel for operating environments requiring maximum corrosion resistance.
In addition, the ordering designation system makes it easy to identify the fastening-hole configuration. Standard versions (GFS…N for S355 and GFX…N for AISI 316L) feature metric threaded fastening holes, while versions designated with the “U” suffix (GFS…NU and GFX…NU) incorporate UNC threaded fastening holes.
Summary technical table of the main characteristics of Oleo Tecnica NPT Threaded Counter Flanges
| Feature | Value |
|---|---|
| Thread Type | NPT (National Pipe Thread) |
| Available Series | Series 3000, Series 6000 |
| Series 3000 Sizes | From 1/2″ to 5″ |
| Series 6000 Sizes | From 1/2″ to 3″ |
| Maximum Working Pressure – Series 3000 | From 34 kg/cm² to 345 kg/cm² (depending on size) |
| Maximum Working Pressure – Series 6000 | 414 kg/cm² (for all sizes) |
| Construction Materials | S355, AISI 316L |
| Fastening Hole Type | Metric, UNC |
Product Codes
| Model (Code) | Series | Size | Max. Pressure (kg/cm²) |
|---|---|---|---|
| GFS080N | 3000 | 1/2″ | 345 |
| GFS080N038 | 3000 | 1/2″ | 345 |
| GFS100N | 3000 | 3/4″ | 345 |
| GFS100N012 | 3000 | 3/4″ | 345 |
| GFS102N | 3000 | 1″ | 345 |
| GFS102N034 | 3000 | 1″ | 345 |
| GFS104N | 3000 | 1″1/4 | 276 |
| GFS104N100 | 3000 | 1″1/4 | 276 |
| GFS106N | 3000 | 1″1/2 | 207 |
| GFS106N114 | 3000 | 1″1/2 | 207 |
| GFS108N | 3000 | 2″ | 207 |
| GFS108N112 | 3000 | 2″ | 207 |
| GFS110N | 3000 | 2″1/2 | 172 |
| GFS112N | 3000 | 3″ | 138 |
| GFS114N | 3000 | 3″1/2 | 34 |
| GFS116N | 3000 | 4″ | 34 |
| GFS118N | 3000 | 5″ | 34 |
| GFS401N012 | 6000 | 1/2″ | 414 |
| GFS401N038 | 6000 | 1/2″ | 414 |
| GFS402N | 6000 | 3/4″ | 414 |
| GFS402N012 | 6000 | 3/4″ | 414 |
| GFS403N | 6000 | 1″ | 414 |
| GFS403N034 | 6000 | 1″ | 414 |
| GFS404N | 6000 | 1″1/4 | 414 |
| GFS404N100 | 6000 | 1″1/4 | 414 |
| GFS405N | 6000 | 1″1/2 | 414 |
| GFS405N114 | 6000 | 1″1/2 | 414 |
| GFS406N | 6000 | 2″ | 414 |
| GFS406N112 | 6000 | 2″ | 414 |
| GFS507N | 6000 | 2″1/2 | 414 |
| GFS508N | 6000 | 3″ | 414 |