Complete Clamp Sets
Ferrule + gasket + clamp + nut as matched sets for project installations.
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Tri-Clamp Fittings & Ferrules
Tri-clamp ferrules, clamps, adapters and related fittings for sanitary process connections.
Fast-moving clamp and ferrule sizes304 / 316L optionsSanitary connection standard reviewGood category for stocking and repeat RFQs
Sizes & Dimensions
Tri-clamp connection components.
All components conform to DIN 32676 / ISO 2852. Dimensionally interchangeable with valves, fittings and equipment from any compliant supplier.
| Size | DN | Ferrule OD | Clamp OD | Gasket ID | Gasket OD |
|---|---|---|---|---|---|
| ½" | DN15 | 12.7 | 50.5 | 9.4 | 25.4 |
| ¾" | DN20 | 19.05 | 50.5 | 15.7 | 25.4 |
| 1" | DN25 | 25.4 | 50.5 | 22.1 | 40.0 |
| 1½" | DN40 | 38.1 | 64.0 | 34.8 | 50.4 |
| 2" | DN50 | 50.8 | 77.5 | 47.6 | 64.0 |
| 2½" | DN65 | 63.5 | 91.0 | 60.2 | 77.4 |
| 3" | DN80 | 76.2 | 91.0 | 72.9 | 77.4 |
| 4" | DN100 | 101.6 | 119.0 | 97.4 | 97.4 |
Operating Conditions
Pressure-temperature rating for tri-clamp fittings.
Standard tri-clamp connections rated to 10 bar (PN10). Heavy-duty configurations available for higher pressure service.
Service Conditions
- Working pressure: 16 bar at ambient
- Test pressure: 24 bar (1.5× working)
- Burst pressure: > 60 bar
- Temperature range: –196°C to +400°C
- Steam SIP: +135°C compatible
- Surface finish: Ra ≤ 0.8 μm (EP option)
Actual ratings depend on size, material and operating conditions. Confirm via RFQ for project-specific requirements.
Standards & Compliance
Built to recognized sanitary and pressure standards.
Full documentation packages available including MTR, 3.1 certificates, surface roughness reports and pressure test records.
DIN 32676
Tri-Clamp Connections
Dimensional standard for tri-clamp fittings.
ISO 2852
Stainless Clamp Couplings
International standard for clamp connections.
3-A 63-04
3-A Sanitary Fittings
Sanitary fittings standard for hygienic process.
ASME BPE
Bioprocessing Equipment
Surface finish, materials and design for pharma/biotech.
ASTM A270
Sanitary Tubing
Welded sanitary stainless tubing specification.
FDA 21 CFR
FDA 21 CFR 177
Food contact materials compliance for seats and seals.
USP Class VI
Biocompatibility
USP biological reactivity testing for plastics.
EC 1935/2004
Food Contact
EU regulation on food-contact materials.
Product Variants
Tri-Clamp Fitting configurations for different process roles.
Multiple variants available to match your application requirements. Browse related products for complete process line coverage.
Technical Datasheet
Download the product-specific RFQ datasheet.
This PDF summarizes typical sizes, materials, standards, application notes and RFQ inputs for Tri-Clamp Fittings. Use it as a preparation document before sending a quotation request.
Engineer / Contractor RFQ Support
Send this item as part of a project package, BOM or comparison quote.
For accurate sourcing, include size, connection type, material grade, finish, quantity, pressure/temperature conditions, certificates required and target delivery timing.
Technical RFQ Guide
Specification points to confirm before quotation.
These are typical sourcing fields. Final availability and compliance should be confirmed against the exact project requirement.
Common sizes
1/2”–4” and common sanitary sizes
Material
304 / 316L stainless steel
Connection
Tri-clamp / clamp-style sanitary connections
Finish
Sanitary polish by requirement
Standards
3-A-style sanitary design discussions by RFQ
Documents
MTR / certificates where available by supplier
Applications
Where this product is typically used.
Sanitary piping assemblies
Relevant for sourcing discussions, project BOMs and maintenance replacement needs.
Equipment connections
Relevant for sourcing discussions, project BOMs and maintenance replacement needs.
Skid fabrication
Relevant for sourcing discussions, project BOMs and maintenance replacement needs.
Plant maintenance inventory
Relevant for sourcing discussions, project BOMs and maintenance replacement needs.
Related Products
Continue building the RFQ package.
Technical Product Layout
Tri-Clamp Fittings — technical sourcing profile
Structured for engineers, contractors and plant buyers who need a clear RFQ-ready technical view before requesting pricing.
Technical Overview
Tri-clamp fittings, clamps, ferrules and gaskets for modular hygienic process connections and fast maintenance access.
Applications
- Sanitary transfer lines
- Equipment connections
- CIP circuits
- Maintenance replacement stock
Material Grades
- Ferrules/fittings: SS304 / SS316L
- Clamps: stainless steel clamp assemblies
- Gaskets: EPDM, Silicone, FKM, PTFE
- Surface finish by RFQ
Surface Finish
Polished sanitary finish for product contact components; gasket material and finish should match process media and cleaning requirements.
Standards
- 3-A sanitary connection discussion
- FDA-oriented gasket options
- DIN / ISO / SMS comparison where required
- Plant maintenance standards
Pressure / TemperatureClamp connection rating depends on clamp type, gasket, ferrule design, size and operating temperature.
Connection TypesCommon RFQ connection formats are listed below. Final connection selection depends on plant standards and equipment interface.
Tri-Clamp ferrulesClamps and gasketsAdaptersHose and tube connection transitions
Related Products
Use these products to build a complete RFQ package around this item.
RFQ note: Values on this page are sourcing guidance only. Final model, pressure rating, temperature rating, certificates, elastomer compatibility and compliance must be confirmed against the exact supplier datasheet and project requirement.
Contractor & Plant Buyer RFQ
Need a contractor-ready quote package or BOM support?
Send line sizes, connection standards, material grade, finish, quantity, photos/drawings and required delivery timing. We help turn unclear product needs into a cleaner RFQ package for supplier comparison.
Common Questions
Frequently asked questions about tri-clamp fittings.
Engineering and procurement questions we hear most often. For project-specific guidance, send your application details via RFQ.
What surface finish should I specify?
For general sanitary service, Ra ≤ 0.8 μm (32 μin) mill-polished is standard. For pharmaceutical and biotech applications, electropolished (EP) with Ra ≤ 0.38 μm is required per ASME BPE SF4.
For ultra-high-purity (WFI, vaccine production), specify SF5 (Ra ≤ 0.25 μm mirror finish). Surface roughness reports with profilometer measurements available on request.
What is the difference between 304 and 316L?
316L contains 2-3% molybdenum giving superior corrosion resistance, especially against chlorides. For dairy CIP (containing caustic), 316L is highly recommended.
304 is acceptable for utility, water and air applications. For all product-contact surfaces in food, dairy, pharma and biotech, 316L is the standard.
Can these be supplied with electropolish?
Yes, electropolished (EP) finish is available with Ra ≤ 0.38 μm (SF4) or ≤ 0.25 μm (SF5). Includes passivation per ASTM A967.
EP recommended for pharma/biotech, WFI systems, and aggressive chemical service. Adds ~2-3 weeks lead time. Surface roughness report included.
What documentation is provided?
Standard: EN 10204 3.1 MTR with heat number traceability for all parts.
Optional: surface roughness report, passivation certificate, dimensional inspection, full BPE package for pharmaceutical applications.
What is the typical lead time?
Standard configurations in 304/316L typically ship in 1-2 weeks from stock. Custom finishes or specifications: 3-6 weeks.
For project quantities, scheduled deliveries available. Provide target quantity and dates with RFQ for accurate lead time.
How are these connected to tubing?
Tri-clamp connections use a ferrule on each side with gasket and clamp ring. Weld connections are butt-welded to tubing — orbital welding recommended for hygienic service.
Specify connection type with your RFQ. Weld ends ship with bevels prepared for orbital welding. Mixed configurations (clamp + weld) available.
Are these compatible with CIP/SIP?
Yes — all sanitary fittings are designed for CIP (cleaning) and SIP (sterilization) cycles. Smooth internal surfaces and no dead-legs prevent product buildup.
For SIP at 121-135°C, ensure gasket material is rated for temperature (PTFE or silicone). EPDM is suitable for CIP only.