The enclosure that opens with a diagonal line enhances accessibility to on-site equipment, can be installed vertically or horizontally, and allows for tube entry from the back or floor.
【Diabox】 - GRP Material (Glassfibre Reinforced Polyester) - Neoprene Gaskets - Basic: IP 65 (IP66 or IP67 optional)・NEMA 4x - Other Accessories Eex p version to EN 50016 available 【Options and Features】 - Latch, Hinge, Flange Plate: in 316L/1.4571 - Window: Acrylic Glass or Safety Glass - Insulation with PU Foam: aluminum foil or hard shell (PP) finish - GO: Low surface resistance → Electrostatic discharge prevention 【Accessories】 - Mounting Plate - Internal Pipe Support - 2” - External Pipe Support - 2” Enclosure Box YouTube https://youtu.be/75ngJ0SWYqg For inquiries in Japanese, please contact: japan@intertec.info
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basic information
【Features of GRP Material】Glass Fiber Reinforced Polyester ■ Strength (1.7 times that of stainless steel) ■ Lightweight (75% lighter than iron) ■ UV resistant ■ Corrosion resistant, suitable for installation in coastal and humid environments. ■ Excellent durability (20-30 years) ■ Significantly higher heat resistance than iron, capable of protecting control equipment from heat generated during disasters. ■ Dust and waterproof grade: IP65 or higher, preventing moisture and dust from entering the enclosure, ensuring no issues with equipment over long periods. ■ Wireless communication compatibility ■ Custom sizes available 【Other Products】 - Protective enclosures - Sunshades and canopies - Protective cabinets and shelters - Heaters, thermostats, and temperature controllers (explosion-proof) - Non-explosion-proof heaters - SAFE LINK service: Pre-assembled "hook-up" for site-based plant instrumentation - HOT BOX: Design and construction services for high-temperature heating in hazardous areas - Passive cooling enclosures and shelters: Design and construction services for remote areas
Price information
Prices may vary depending on the purpose, installation location, and temperature conditions, so please contact us for more information. For inquiries in Japanese, please contact: japan@intertec.info
Delivery Time
※Delivery times may vary depending on the product, so please contact us.
Applications/Examples of results
[Transaction Results] We have delivered over 1 million industry-leading instrument protection boxes. We have numerous delivery records of freeze prevention products for extremely cold regions, and we supply our products to the majority of major companies in the oil, gas, chemical, and petrochemical industries. For project results and products, please contact us.
Detailed information
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The INTERTEC DIABOX is a GRP field instrumentation enclosure with a diagonal two-part construction. The lid opens diagonally forward through a wide angle, providing excellent maintenance access to internally mounted instruments such as differential pressure transmitters and valve manifolds. Six standard sizes are available — DIABOX 27 (custom-size capable), 87, 107, 137, 187, and 227 — and the DIABOX VARIO range accommodates special sizes and forms on request.
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Standard accessories for the DIABOX include an internal pipe support (2-inch), external pipe support (2-inch), and a mounting plate, enabling direct mounting to process pipework and simplifying instrument installation at field locations. Hardware material is hot-dip galvanised steel as standard, with stainless steel available as an option for corrosive environments. An Ex-p explosion-proof version to EN 50016 is also offered, covering use in hazardous areas Zone 1 and Zone 2.
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The photograph shows a large number of DIABOX units mounted directly on outdoor process pipework at a natural gas plant — for example on orifice plates in flow lines. Each DIABOX houses differential pressure transmitters, valves, and filters as part of a flow measurement system. The foreground unit has its lid open at a wide diagonal angle, clearly demonstrating the ease of maintenance access to the internal instruments. Projects have also been delivered as pre-assembled systems combined with the INTERTEC Safelink instrumentation connection solution.
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The left photograph shows three differential pressure transmitters and valve manifolds housed together inside a DIABOX. The enclosure's generous internal volume, combined with the wide-opening diagonal lid, allows multiple instruments to be grouped compactly while maintaining individual access for maintenance. The right photograph shows the instrument tubing (impulse lines) and valve manifold detail, illustrating an application in a fiscal flow measurement system using a DIABOX VARIO (custom size). The DIABOX is widely used as a field instrumentation housing for differential pressure flow and level measurement at oil and natural gas plants.
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DIABOX drawing.
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DIABOX VARIO.
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DIABOX VARIO.
Line up（6）
| Model number | overview |
|---|---|
| DIABOX 87 | Dimensions (approx.) H x W x D Mounting “vertical” 490 x 460 x 390 mm Mounting “horizontal” 390 x 460 x 490 mm |
| DIABOX 107 | Dimensions (approx.) H x W x D Mounting “vertical“ 490 x 585 x 390 mm Mounting “horizontal“ 390 x 585 x 490 mm |
| DIABOX 137 | Dimensions (approx.) H x W x D Mounting “vertical” 490 x 710 x 390 mm Mounting “horizontal” 390 x 710 x 490 mm |
| DIABOX 187 | Dimensions (approx.) H x W x D vertical 490 x 960 x 390 mm horizontal 390 x 960 x 490 mm |
| DIABOX 277 | Dimensions (approx.) H x W x D 600 x 750 x 600mm |
| DIABOX VARIO | Customized size |
catalog（3）
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Company information
Protecting internal equipment from environments such as cold, heat, corrosion, and chemical areas. Founded in Germany in 1965, our company has a history of 50 years and has achieved an annual growth of 15%. The reason for this growth lies in our unique GRP material. As experts in GRP material, we manufacture enclosures, cabinets, and shelters, while simultaneously providing heating and cooling systems installed inside. We are a German manufacturer that offers diverse solutions to protect delicate field equipment in chemical plants, petrochemical plants, and other industries worldwide. We protect internal measurement, control, and analysis equipment from environments such as freezing, excessive heat, corrosion, and condensation. All of our products are made from GRP (glass-reinforced polyester) material, which has a very low thermal conductivity, allowing us to maximize the efficiency of cooling and heating systems. 【ISO Certification】 ISO 9001 ISO 14001
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