Stainless Steel Din 11864-3 Heavy-duty Clamp Structure And Design Features

For aseptic processing requiring elevated pressure ratings, a stainless steel DIN 11864-3 heavy-duty clamp delivers superior performance through thicker wall sections and higher-strength materials. Available in DN10-DN100 (12.7 mm to 104.0 mm OD) from SS316L with Ra < 0.8 μm finish, the clamp achieves allowable pressures from 40 bar down to 16 bar. The din11864 standard encompasses three connection types, with the -3 clamp version providing the most flexible solution. The Form A configuration with O-ring sealing provides the aseptic interface.

Heavy-Duty Construction

The DIN 11864-3 heavy-duty clamp features increased wall thickness compared to standard hygienic designs. This provides structural rigidity and resistance to deformation under pressure loads. The din11864 heavy-duty series ensures pressure ratings are maintained throughout service life, with thicker wall sections resisting creep and stress relaxation.

Pressure rating by pipe diameter:

• 12.7 mm to 41.0 mm OD: 4.0 MPa (40 bar)

• 42.4 mm to 70.0 mm OD: 2.5 MPa (25 bar)

• 76.1 mm to 104.0 mm OD: 1.6 MPa (16 bar)

DIN 11864-3 Form A: Aseptic Clamp Interface

The DIN 11864-3 Form A configuration utilizes an O-ring seal, creating a smooth internal interface that eliminates dead spaces. The design achieves metal-to-metal contact behind the sealing plane, ensuring mechanical strength and hygienic integrity.

Key features of the din 11864 3 form a design:

• O-ring seal for aseptic applications

• Smooth internal interface for CIP/SIP compatibility

• No dead spaces for optimal cleanability

• Quick-release clamp mechanism for maintenance

Material and Surface Finish

The clamp is manufactured from SS316L (1.4404 / 1.4435), providing corrosion resistance for process media and cleaning chemicals. Surface finish meets aseptic standards with Ra < 0.8 μm for wetted surfaces.

DIN 11864-2 vs. DIN 11864-3

The din 11864 2 configuration uses a bolted flange design with pressure ratings of 25 bar (12.7–41.0 mm) and 16 bar (42.4–104.0 mm), while the din 11864 3 employs a clamp mechanism enabling rapid assembly. The clamp is preferred for systems requiring frequent maintenance.

Installation and Maintenance

The clamp enables tool-free assembly. Proper torque application during installation achieves specified pressure ratings. Extended welding ends enable seamless integration into piping systems.

Selection priorities:

1. Select DIN 11864-3 clamp for frequent maintenance access

2. Choose DIN 11864-2 flange for permanent installations

3. Specify SS316L for corrosion resistance

4. Verify pressure rating based on pipe diameter

5. Confirm Form A configuration for aseptic applications

The stainless steel DIN 11864-3 heavy-duty clamp provides a robust aseptic connection. The din 11864 3 form a ensures hygienic integrity, while the din 11864 2 flange suits permanent installations. The din11864 standard offers comprehensive aseptic connection solutions for pharmaceutical and biotech industries.

Stainless Steel DIN 11864-3 Heavy Duty Clamp

• This Tri clamp connection couplings set fully follows the regulation in DIN 11864-3 standard. Material needs to be 316L to meet aseptic requirement of food, chemical and pharmaceutical industries. 
• It is available in virtually all sizes, standards and configurations and it means you can optimize conditions inside your process whilst you are maintaining security on the outside according to different requirements. In addition to the quick connect we offer sterile unions threaded connections  and sterile flanged connections for maximum security. The design incorporates use of a standard dimension o-ring which gives flexibility of material choice.

Product Description

Product Parameter