Engineered Clamping for Critical Connections
RATHMANN® screw clamps are engineered to provide defined or application-specific sealing forces for connecting components in pressure and process equipment.
Different clamp families use different contact-surface geometries, allowing the clamping solution to be matched to the applicable flange configuration and surface condition.
Three Clamp Families. Different Connection Requirements.
The decisive design variable is the clamp contact surface and its geometry, matched to the intended flange connection.
Where RATHMANN® Clamping Technology Fits
Match the application to the connection requirement, then move into engineering selection.
Chemical Processing
Engineered clamping solutions for selected chemical-process equipment, reactors, process vessels and protected flange connections.
- ▸Reactors
- ▸Process vessels
- ▸Glass-lined equipment
- ▸Special flange connections
Starting point: DIN 28152 / Wulst screw clamps
Glass-Lined Equipment
Wulst and DIN 28152 screw-clamp designs are intended for surface-protected connections such as enamelled flanges, where contact-surface geometry is an important part of the connection design.
- ▸Glass-lined reactors
- ▸Enamelled vessels
- ▸Protected flange interfaces
- ▸Chemical process equipment
Starting point: DIN 28152 / Wulst
Pressure Vessels
Segment screw clamps provide defined sealing forces for suitable engineered pressure-equipment connections, with available material and technical-documentation options depending on configuration.
- ▸Pressure vessels
- ▸Process vessels
- ▸Special pressure equipment
- ▸Engineered flange connections
Starting point: Segment screw clamps
Reactors & Process Vessels
RATHMANN® clamp technology can be considered where the flange configuration, sealing system, operating conditions and required clamping force call for an engineered screw-clamp solution.
- ▸Reactors
- ▸Process vessels
- ▸Special flange connections
Starting point: Subject to engineering selection
Special / Customer-Specific Applications
Rathmann also develops and constructs screw clamps for special applications and customer requirements.
Which RATHMANN® Clamp Family?
| Application / Connection | Starting Point |
|---|---|
| Engineered pressure-equipment connection | Segment Screw Clamp |
| Surface-protected / enamelled flange | Wulst Screw Clamp |
| Glass-lined / chemical-process equipment | DIN 28152 Screw Clamp |
| Non-standard geometry / customer requirement | Special Screw Clamp |
Final selection depends on flange geometry, sealing system, operating conditions, material requirement and applicable engineering documentation.
From Application to Engineering Selection
The correct clamp starts with the connection details.
Equipment Type
Pressure vessel, reactor, process vessel or glass-lined equipment.
Flange Configuration
Flange dimensions, geometry and available clamping area.
Operating Conditions
Pressure, temperature and service conditions.
Sealing Arrangement
Gasket type, sealing interface and protected surface.
Clamp Requirement
Quantity, thread size, clamping length and material.
Documentation
AD 2000, ASME, EN 10204 and inspection requirements, depending on configuration.
Material & Configuration Options
Configuration and availability depend on product, material and application. Full technical data is issued against a specific enquiry.
Request Technical DatasheetSurface Treatment Options
- ▸Blue galvanizing
- ▸Electropolishing
- ▸Pickling & passivation
- ▸Chemical nickel
- ▸Hard chrome plating
- ▸Veralit plating
- ▸Other options
Selected surface-treatment options are available depending on product and application.
Surface Finishes: Actual Product Views
Engineering Documentation
Depending on product, material and customer requirement, Rathmann provides technical information and documentation associated with clamp configuration, material and inspection requirements, potentially including DIN EN 10204, AD 2000, ASME and test/inspection documentation.
Availability depends on product configuration, material and customer requirement.
Your Application. Our Engineering Connection.
Application Engineering
Understand the equipment, flange geometry and application requirement.
Product Selection
Identify the appropriate clamp family and configuration.
Technical Coordination
Coordinate technical requirements with RATHMANN®.
India Market Support
Local commercial and technical interface for Indian customers.
Related Products and Industries
Have a Pressure Equipment Application?
Send us your flange drawing, vessel details, existing clamp specification or connection requirements. We can coordinate the technical review with RATHMANN® and help identify the appropriate starting configuration.