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Oleo Tecnica BSP Threaded Double Flanges

Oleo Tecnica BSP Threaded Double Flanges ensure stable and secure connections in hydraulic circuits. Developed to provide superior mechanical sealing, they are divided into Series 3000 and Series 6000. Manufactured in S355 steel or AISI 316L stainless steel, they incorporate fastening systems with metric or UNC screw kits complete with dedicated O-Rings. They deliver excellent performance at working pressures up to 414 bar, supporting diameters from 1/2″ to 5″.
The available product codes are: DFS080G, DFS080G038, DFS100G, DFS100G012, DFS102G, DFS102G034, DFS104G, DFS104G100, DFS106G, DFS106G114, DFS108G, DFS108G112, DFS110G, DFS110G200, DFS112G, DFS112G212, DFS114G, DFS114G300, DFS116G, DFS116G312, DFS118G, DFS401G012, DFS401G038, DFS402G, DFS402G012, DFS403G, DFS403G034, DFS404G, DFS404GL13, DFS404G100, DFS404G100L13, DFS405G, DFS405G114, DFS406G, DFS406G112, DFS507G, DFS508G.

Description

Technical Specifications and Construction Standards

Oleo Tecnica BSP Threaded Double Flanges represent a high-level mechanical solution for connection and sealing in hydraulic systems operating under high pressure. Designed with BSP (Gas) threads, these flanges ensure a leak-tight connection between piping and hydraulic fluid control components, drastically reducing the risk of leakage. The range is divided into two main performance categories, Series 3000 and Series 6000, designed to cover a wide spectrum of flow rates, diameters and working pressures, meeting the most demanding requirements of industrial systems.

Materials and Mechanical Strength

The structural strength of Oleo Tecnica BSP Threaded Double Flanges is ensured by the use of high-performance metal alloys. The components are available in S355 carbon steel and, for operating environments involving corrosive fluids or specific hygiene requirements, in AISI 316L stainless steel. Together with the flange and counter flange, specific O-Rings (series from 4075 to 4537) are supplied and are essential for completing the hydraulic joint seal, fully isolating the fluid from the external environment.

Working Pressures and Dimensions (Series 3000 and Series 6000)

The maximum recommended pressure performance varies according to the Series and flange size. In Series 3000, compact models (from 1/2″ to 1″) operate safely up to 345 bar. As dimensions increase (up to 5″), recommended pressures progressively decrease, reaching nominal values such as 276 bar (1″1/4), 207 bar (from 1″1/2 to 2″) and 34 bar for 3″1/2, 4″ and 5″ diameters. Series 6000, specifically designed for severe mechanical stress, maintains a constant pressure rating of 414 bar for all available sizes, from 1/2″ up to 3″. Both series are supplied with hexagonal screw kits to ensure correct joint preload.

Ordering Designation and Fastener Specifications

The component coding system facilitates precise selection when ordering. The combination of flange, counter flange and metric screw set is identified by the codes DFS…GM or DFX…GM. Where the system standard requires imperial threads, a configuration with UNC screw sets is available, designated by the suffixes DFX…GU or DFS…GU. It is important to note that UNC screw sets are available only for carbon steel versions. Likewise, for specific models marked with an asterisk (such as DFS507G and DFS508G), the only permitted configuration uses metric carbon steel screws.

Summary technical table of the main characteristics of Oleo Tecnica BSP Threaded Double Flanges

Feature Value
Connection Thread GAS / BSP
Available Series Series 3000, Series 6000
Max. Working Pressure (Series 3000) From 345 bar to 34 bar (depending on size)
Max. Working Pressure (Series 6000) 414 bar (constant for documented diameters)
Flange Sizes / Dimensions From 1/2″ to 5″
Construction Materials S355 Steel, AISI 316L Steel
Metric Screw Designation DFS…GM / DFX…GM
UNC Screw Designation DFX…GU / DFS…GU (carbon steel only)
O-Ring Type From model 4075 to 4537

Product Codes

Product Code Series Size Max. Pressure (bar) O-Ring Type
DFS080G 3000 1/2″ 345 4075
DFS080G038 3000 1/2″ (3/8″ GAS) 345 4075
DFS100G 3000 3/4″ 345 4100
DFS100G012 3000 3/4″ (1/2″ GAS) 345 4100
DFS102G 3000 1″ 345 4131
DFS102G034 3000 1″ (3/4″ GAS) 345 4131
DFS104G 3000 1″1/4 276 4150
DFS104G100 3000 1″1/4 (1″ GAS) 276 4150
DFS106G 3000 1″1/2 207 4187
DFS106G114 3000 1″1/2 (1″1/4 GAS) 207 4187
DFS108G 3000 2″ 207 4225
DFS108G112 3000 2″ (1″1/2 GAS) 207 4225
DFS110G 3000 2″1/2 172 4275
DFS110G200 3000 2″1/2 (2″ GAS) 173 4275
DFS112G 3000 3″ 138 4337
DFS112G212 3000 3″ (2″1/2 GAS) 138 4337
DFS114G 3000 3″1/2 34 4387
DFS114G300 3000 3″1/2 (3″ GAS) 34 4387
DFS116G 3000 4″ 34 4437
DFS116G312 3000 4″ (3″1/2 GAS) 34 4437
DFS118G 3000 5″ 34 4537
DFS401G012 6000 1/2″ 414 4075
DFS401G038 6000 1/2″ (3/8″ GAS) 414 4075
DFS402G 6000 3/4″ 414 4100
DFS402G012 6000 3/4″ (1/2″ GAS) 414 4100
DFS403G 6000 1″ 414 4131
DFS403G034 6000 1″ (3/4″ GAS) 414 4131
DFS404G 6000 1″1/4 414 4150
DFS404GL13 6000 1″1/4 (Screw variant) 414 4150
DFS404G100 6000 1″1/4 (1″ GAS) 414 4150
DFS404G100L13 6000 1″1/4 (1″ GAS – Variant) 414 4150
DFS405G 6000 1″1/2 414 4187
DFS405G114 6000 1″1/2 (1″1/4 GAS) 414 4187
DFS406G 6000 2″ 414 4225
DFS406G112 6000 2″ (1″1/2 GAS) 414 4225
DFS507G * 6000 2″1/2 414 4275
DFS508G * 6000 3″ 414 4337

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