Selection Of Sanitary Grade Stainless Steel 13sf Double Pin Pipe Clamps

For biopharmaceutical piping, specify the 13SF double-pin tri clover clamp to eliminate leakage and contamination risks from standard clamps. The double‑hinge design opens wider for confined installations and delivers 360° uniform compression on ferrules. Fabricated from SS304 or SS316L with crevice‑free surfaces, it supports CIP/SIP protocols. This round clamp fits 1/2"‑12" (DN10‑DN300) piping with pressure rating up to 10 bar. Select this clamp for connections requiring frequent disassembly and validated sealing.

The Problem with Standard Single‑Pin Clamps

Standard single‑pin clamps may distribute pressure unevenly, creating potential leak paths. Their limited opening makes installation difficult in tight piping runs. Threaded connections harbor bacteria and are unsuitable for hygienic processing. The 13SF double‑pin clamp addresses these limitations.

Advantages of the 13SF double‑pin clamp:

•  Double hinge provides uniform 360° seal compression.

•  Opens wider than single‑pin for confined space access.

•  Crevice‑free interior prevents microbial adhesion.

•  Bolted wing nut allows tool‑free assembly.

The tri clamp design uses two ferrules with a gasket between them. The clamp applies consistent force to create a seal without threads, eliminating a common contamination source.

Material and Design Specifications

The 13SF clamp features two hinge pins for enhanced mechanical advantage, providing higher clamping force with less operator effort. The bolted wing nut allows rapid assembly without tools. The round shape ensures even stress distribution across the ferrule circumference.

• Body material: SS304 or SS316L

• Connection: Clamp (bolted double‑pin)

• Size range: 1/2" – 12" (DN10 – DN300)

• Pressure rating: 0 – 10 bar

• Surface finish: Vibration polished

• Ferrule compatibility: Standard ASME BPE

The tri clover clamp's self‑aligning joints enhance performance. SS316L provides corrosion resistance to CIP chemicals and process fluids.

Applications in Biopharmaceutical Lines

The 13SF clamp is specified at connection points requiring frequent disassembly for cleaning or inspection.

Typical installation points:

• Bioreactor feed and harvest transfer panels

• CIP supply and return connections

• Filtration skid inlet/outlet manifolds

• Chromatography column connections

• WFI and pure steam distribution lines

The tri clamps enable quick connection changes without welding. The bolted design supports frequent maintenance with tool‑free operation. In large-scale facilities, multiple tri clovers are used across different piping manifolds. Their standardized dimensions (1/2"–12" or DN10–DN300) ensure interchangeability between equipment from various suppliers, simplifying spare parts management.

Sealing Performance and Validation

The 13SF clamp compresses a gasket between two ferrules to create a seal. The double‑pin design applies pressure evenly around the circumference, preventing gasket extrusion and leaks. The round shape ensures uniform stress distribution.

Sealing specifications:

• Gasket options: PTFE, EPDM, Silicone

• Pressure rating: 0 – 10 bar

• Temperature range: -20°C to 150°C

• Crevice‑free: Meets 3A and ASME BPE standards

• Size compatibility: 1/2" – 12" (DN10 – DN300)

The sanitary clamp's self‑draining geometry prevents liquid hold‑up, supporting validated cleaning protocols. 360° uniform compression ensures consistent sealing across the entire gasket surface.

Specification Table

Installation and Maintenance

Installation requires aligning two ferrules with a gasket between them. The 13SF clamp fits over the ferrule flanges and is tightened by hand. The double hinge opens wide to accommodate piping in tight spaces. Size compatibility from 1/2" to 12" covers lab‑scale to production lines.

Maintenance involves gasket inspection and replacement. The clamp has no wearing parts. The bolted mechanism should be checked for smooth operation.

Why specify the 13SF double‑pin tri‑clover clamp:

1. Provides leak‑proof sealing through 360° uniform compression.

2. Opens wider for installation in confined areas.

3. Eliminates threads that harbor bacteria.

4. Offers SS304/SS316L options for corrosion resistance.

5. Covers 1/2"‑12" (DN10‑DN300) with pressure rating to 10 bar.

The 13SF double‑pin clamp is a solution for biopharmaceutical connections requiring secure sealing and cleanability. Its design replaces threaded connections with a sanitary interface. Specify this tri clover clamp for vessels and transfer lines where contamination control is required. The round shape and double‑pin mechanism ensure reliable performance across the full size range.

Sanitary Stainless Steel 13SF Double Pin Pipe Clamp

• Sanitary tri clamp is an essential part of tri clamp fitting. Size from 1/2" to 12", All our sanitary fittings ferrule is produced by CNC lathe machine, having the high purity surface and meet the requirement of food, Beverage, Dairy, pharmacy etc industries. sanitary fittings ferrule standard length is 12.7mm or 21.5mm.  

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